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Captiva 1 (2006-2018)
  • Home
  • Captiva
  • 2006-2018
  • Engine FAM II 2.4D
  • Control and power systems

Diagnostic Trouble Codes DTC (beginning)

            0


Diagnostic trouble code (DTC) P0030




HO2S heater control circuit sensor 1




Circuit Description


Oxygen sensors with electric heater are used for fuel control and post catalytic converter control. Each HO2S compares the oxygen content of the ambient air with the oxygen content of the exhaust gases. When the engine is first started, the ECM operates in open loop mode, ignoring the HO2S signal level when calculating the air/fuel ratio. The ECM provides the HO2S with a pilot signal level of about 0.45V. The HO2S generates a signal level between 0~1V that fluctuates above and below the bias voltage when operating in closed loop. A high HO2S output indicates a rich fuel mixture. A low HO2S output indicates a lean fuel mixture. Heating elements in the HO2S minimize the time required for the sensors to reach operating temperature and then transmit an accurate voltage signal. The ECM monitors the HO2S heater low signal control circuit with the control device in the low signal circuit. The HO2S heater diagnostic system monitors the flow of current through the control device in the low HO2S circuit when the engine is running. When the ECM detects that the HO2S heater low control circuit current has exceeded a predetermined level, a DTC will set.

Conditions for Running the DTC


  • engine running
  • Battery voltage 10.7 - 16.1 V.

Conditions for setting the DTC.


  • Heater voltage is 2.344 - 3.594 V and heating is off.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

DTC P0030 - HO2S Heater Control Circuit Sensor 1



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Start the engine.
  2. Warm up the engine at idle to operating temperature.
  3. Scan the HO2S heater current parameters with a scan tool.
Is the current within the specified values?
0.25~0.85 A
Go to step 3
Go to step 4
3
  1. Examine the failure log data for this DTC.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to generate a DTC. You can also create conditions for the vehicle that have been observed based on the recorded disturbance data.
Did the DTC indicate a misfire?
-
Go to step 4
See Intermittent faults»
4
  1. Switch off the ignition.
  2. Disconnect diagnostic oxygen sensor connector (HO2S).
  3. Start the engine.
  4. Warm up the engine at idle to operating temperature.
  5. Use a scan tool to monitor the DTC Info parameter (information on troubleshooting codes) at least 30 seconds.
Did the DTC indicate a misfire?
-
Go to step 5
Go to step 6
5
Test the HO2S heater low control circuit for a short to voltage.
Fault found and corrected?
-
Go to step 10
Go to step 7
6
Check for intermittent problems and loose connections at the HO2S harness connector.
Fault found and corrected?
-
Go to step 10
Go to step 8
7
Check for intermittent problems and loose connections at the ECM harness connector.
Fault found and corrected?
-
Go to step 10
Go to step 9
8
Replace the HO2S diagnostic oxygen sensor.
Has the replacement been made?
-
Go to step 10
-
9
Replace the ECM.
Has the replacement been made?
-
Go to step 10
-
10
  1. Clear the DTCs with a scan tool.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to generate a DTC. You can also create conditions for the vehicle that have been observed based on the recorded disturbance data.
DTC appears and disappears?
-
Go to step 11
Go to step 2
11
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code (DTC) P0031




HO2S Heater Control Circuit Low Voltage Sensor 1




Circuit Description


DTC P0031 monitors the HO2S heater circuit current. The heater is powered through the ignition key and grounded through the ECM heater control. The ECM commands the heater to start by closing the heater control circuit to ground. The HO2S sensor must be at operating temperature in order to accurately measure the oxygen content of the exhaust gases. The heater allows the HO2S to quickly reach operating temperature.

Conditions for Running the DTC


  • engine running
  • Battery voltage 10.7 - 16.1 V.

Conditions for setting the DTC.


  • The heater voltage is less than 2.344 V and the heater is off.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An intermittent fault may be caused by a problem in the HO2S electrical circuit. Check for intermittent faults in the wiring harness or individual components. See «Intermittent faults".
If DTC P0031 cannot be repeated, then the information included in the status record buffer may be helpful in determining conditions when the DTC is first set.

DTC P0031 - HO2S Heater Control Circuit Low Voltage Sensor 1



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Switch off the ignition.
  2. Disconnect the HO2S electrical connector.
  3. Switch on the ignition with the engine off.
  4. Inspect the harness side of the HO2S heater ignition circuit at the connector using a test light connected to ground.
Is the control lamp on?
-
Go to step 3
Go to step 7
3
  1. Measure the resistance of the HO2S heating element.
  2. Connect a digital voltmeter to terminals 2 and 4 on the side of the HO2S connector.
Is the HO2S heater resistance within the specified range?
4.5~5.7ohm
Go to step 4
Go to step 9
4
  1. Connect a test lamp between the B+ and the ECM side of the HO2S heater control circuit.
  2. Start the engine.
Does the warning light only come on when the engine is running?
-
Go to «Diagnostic Information»
Go to step 5
5
  1. Switch off the ignition.
  2. Connect the HO2S electrical connector.
  3. Disconnect the ECM electrical connector.
  4. Switch on the ignition with the engine off.
  5. Measure the voltage of the HO2S heater control circuit at the harness side of the ECM.
Is the voltage higher than specified?
10 V
Go to step 8
Go to step 6
6
Repair the open or short to ground in the HO2S heater control circuit.
Repair completed?
-
Go to step 11
-
7
Repair the open in the positive voltage ignition circuit.
Repair completed?
-
Go to step 11
-
8
  1. Check the electrical connections of the ECM and HO2S.
  2. Troubleshoot if necessary.
Was a repair necessary?
-
Go to step 11
Go to step 10
9
Replace the HO2S diagnostic oxygen sensor.
Has the replacement been made?
-
Go to step 11
-
10
Replace the ECM.
Has the replacement been made?
-
Go to step 11
-
11
  1. Start the engine.
  2. Drive to set DTCs as indicated in the help text.
DTC appears and disappears?
-
Go to step 12
Go to step 2
12
Use the scanning tool to view the accumulated information.
Does the scan tool display any DTCs that you did not diagnose?
-
Jump to the appropriate DTC
malfunctions
System OK

Diagnostic trouble code (DTC) P0032




HO2S heater control circuit high voltage sensor 1




Circuit Description


DTC P0032 monitors the HO2S heater circuit current. The heater is powered through the ignition key and grounded through the ECM heater control. The ECM commands the heater to start by closing the heater control circuit to ground. The HO2S sensor must be at operating temperature in order to accurately measure the oxygen content of the exhaust gases. The heater allows the HO2S to quickly reach operating temperature.

Conditions for Running the DTC


  • engine running
  • Battery voltage 10.7 - 16.1 V.

Conditions for setting the DTC.


  • The heater voltage is 3.594 V and the heating is on.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An intermittent fault may be caused by a problem in the HO2S electrical circuit. Check for intermittent faults in the wiring harness or individual components. See «Intermittent faults".
If DTC P0032 cannot be repeated, then the information included in the status record buffer may be helpful in determining conditions when the DTC is first set.

DTC P0032 - HO2S Heater Control Circuit High Voltage Sensor 1



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Measure the resistance of the HO2S heating element.
  2. Connect a digital voltmeter to terminals 2 and 4 on the side of the HO2S connector.
Is the HO2S heater resistance within the specified range?
4.5~5.7ohm
Go to step 3
Go to step 5
3
  1. Switch off the ignition.
  2. Disconnect the HO2S and ECM electrical connectors.
  3. Switch on the ignition with the engine off.
  4. Test the heater control circuit between the HO2S and the ECM for a short to voltage. Troubleshoot if necessary.
Was a repair necessary?
-
Go to step 7
Go to step 4
4
  1. Switch on the ignition with the engine off.
  2. Using a scan tool, clear the DTC.
  3. Make a car trip according to the conditions of the status record buffer.
Does this DTC appear?
-
Go to step 6
Go to «Diagnostic Information»
5
Replace the HO2S diagnostic oxygen sensor.
Has the replacement been made?
-
Go to step 7
-
6
Replace the ECM.
Has the replacement been made?
-
Go to step 7
-
7
  1. Start the engine.
  2. Drive to set DTCs as indicated in the help text.
DTC appears and disappears?
-
Go to step 8
Go to step 2
8
Use the scanning tool to view the accumulated information.
Does the scan tool display any DTCs that you did not diagnose?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code (DTC) P0036




HO2S heater control circuit sensor 2 row 1




Circuit Description


Oxygen sensors with electric heater are used for fuel control and post catalytic converter control. Each HO2S compares the oxygen content of the ambient air with the oxygen content of the exhaust gases. When the engine is first started, the ECM operates in open loop mode, ignoring the HO2S signal level when calculating the air/fuel ratio. The ECM provides the HO2S with a pilot signal level of about 0.45V. The HO2S generates a signal level between 0~1V that fluctuates above and below the bias voltage when operating in closed loop. A high HO2S output indicates a rich fuel mixture. A low HO2S output indicates a lean fuel mixture. Heating elements in the HO2S minimize the time required for the sensors to reach operating temperature and then transmit an accurate voltage signal. The ECM monitors the HO2S heater low signal control circuit with the control device in the low signal circuit. The HO2S heater diagnostic system monitors the flow of current through the control device in the low HO2S circuit when the engine is running. When the ECM detects that the HO2S heater low control circuit current has exceeded a predetermined level, a DTC will set.

Conditions for setting the DTC.


  • The integral controller checks the current and voltage of the output stage.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

DTC P0036 - HO2S Heater Control Circuit Sensor 2



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Start the engine.
  2. Warm up the engine at idle to operating temperature.
  3. Scan the HO2S heater current parameters with a scan tool.
Is the current within the specified values?
0.25~0.85 A
Go to step 3
Go to step 4
3
  1. Examine the failure log data for this DTC.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to generate a DTC. You can also create conditions for the vehicle that have been observed based on the recorded disturbance data.
Did the DTC indicate a misfire?
-
Go to step 4
See Intermittent faults»
4
  1. Switch off the ignition.
  2. Disconnect diagnostic oxygen sensor connector (HO2S).
  3. Start the engine.
  4. Warm up the engine at idle to operating temperature.
  5. Use a scan tool to monitor the DTC Info parameter (information on troubleshooting codes) at least 30 seconds.
Did the DTC indicate a misfire?
-
Go to step 5
Go to step 6
5
Test the HO2S heater low control circuit for a short to voltage.
Fault found and corrected?
-
Go to step 10
Go to step 7
6
Check for intermittent problems and loose connections at the HO2S harness connector.
Fault found and corrected?
-
Go to step 10
Go to step 8
7
Check for intermittent problems and loose connections at the ECM harness connector.
Fault found and corrected?
-
Go to step 10
Go to step 9
8
Replace the HO2S diagnostic oxygen sensor.
Has the replacement been made?
-
Go to step 10
-
9
Replace the ECM.
Has the replacement been made?
-
Go to step 10
-
10
  1. Clear the DTCs with a scan tool.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to generate a DTC. You can also create conditions for the vehicle that have been observed based on the recorded disturbance data.
DTC appears and disappears?
-
Go to step 11
Go to step 2
11
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code (DTC) P0037




HO2S Heater Control Circuit Low Voltage Sensor 2




Circuit Description


DTC P0037 monitors the HO2S heater circuit current. The heater is powered through the ignition key and grounded through the ECM heater control. The ECM commands the heater to start by closing the heater control circuit to ground. The HO2S sensor must be at operating temperature in order to accurately measure the oxygen content of the exhaust gases. The heater allows the HO2S to quickly reach operating temperature.

Conditions for setting the DTC.


  • The integral controller checks the current and voltage of the output stage.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An intermittent fault may be caused by a problem in the HO2S electrical circuit. Check for intermittent faults in the wiring harness or individual components. See «Intermittent faults".
If DTC P0037 cannot be repeated, then the information included in the status record buffer may be helpful in determining conditions when the DTC is first set.

DTC P0037 - HO2S Heater Control Circuit Low Voltage Sensor 2



Step Operation Values Yes No
1
Perform a diagnostic system check (OBD).
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Switch off the ignition.
  2. Disconnect the HO2S electrical connector.
  3. Switch on the ignition with the engine off.
  4. Inspect the harness side of the HO2S heater ignition circuit at the connector using a test light connected to ground.
Is the control lamp on?
-
Go to step 3
Go to step 7
3
  1. Measure the resistance of the HO2S heating element.
  2. Connect a digital voltmeter to terminals 2 and 4 on the side of the HO2S connector.
Is the HO2S heater resistance within the specified range?
4.5~5.7ohm
Go to step 4
Go to step 9
4
  1. Connect a test lamp between the B+ and the ECM side of the HO2S heater control circuit.
  2. Start the engine.
Does the warning light only come on when the engine is running?
-
Go to «Diagnostic Information»
Go to step 5
5
  1. Switch off the ignition.
  2. Connect the HO2S electrical connector.
  3. Disconnect the ECM electrical connector.
  4. Switch on the ignition with the engine off.
  5. Measure the voltage of the HO2S heater control circuit at the harness side of the ECM.
Is the voltage higher than specified?
10 V
Go to step 8
Go to step 6
6
Repair the open or short to ground in the HO2S heater control circuit.
Repair completed?
-
Go to step 11
-
7
Repair the open in the positive voltage ignition circuit.
Repair completed?
-
Go to step 11
-
8
  1. Check the electrical connections of the ECM and HO2S.
  2. Troubleshoot if necessary.
Was a repair necessary?
-
Go to step 11
Go to step 10
9
Replace the HO2S diagnostic oxygen sensor.
Has the replacement been made?
-
Go to step 11
-
10
Replace the ECM.
Has the replacement been made?
-
Go to step 11
-
11
  1. Start the engine.
  2. Drive to set DTCs as indicated in the help text.
DTC appears and disappears?
-
Go to step 12
Go to step 2
12
Use the scanning tool to view the accumulated information.
Does the scan tool display any DTCs that you did not diagnose?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code (DTC) P0038




Sensor 2 row 1 high voltage HO2S heater control circuit




Circuit Description


DTC P0038 monitors the HO2S heater circuit current. The heater is powered through the ignition key and grounded through the ECM heater control. The ECM commands the heater to start by closing the heater control circuit to ground. The HO2S sensor must be at operating temperature in order to accurately measure the oxygen content of the exhaust gases. The heater allows the HO2S to quickly reach operating temperature.

Conditions for setting the DTC.


  • The integral controller checks the current and voltage of the output stage.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An intermittent fault may be caused by a problem in the HO2S electrical circuit. Check for intermittent faults in the wiring harness or individual components. See «Intermittent faults".
If DTC P0038 cannot be repeated, then the information included in the status record buffer may be helpful in determining conditions when the DTC is first set.

DTC P0038 - HO2S Heater Control Circuit High Voltage Sensor 2



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Measure the resistance of the HO2S heating element.
  2. Connect a digital voltmeter to terminals 2 and 4 on the side of the HO2S connector.
Is the HO2S heater resistance within the specified range?
4.5~5.7ohm
Go to step 3
Go to step 5
3
  1. Switch off the ignition.
  2. Disconnect the HO2S and ECM electrical connectors.
  3. Switch on the ignition with the engine off.
  4. Test the heater control circuit between the HO2S and the ECM for a short to voltage. Troubleshoot if necessary.
Was a repair necessary?
-
Go to step 7
Go to step 4
4
  1. Switch on the ignition with the engine off.
  2. Using a scan tool, clear the DTC.
  3. Make a car trip according to the conditions of the status record buffer.
Does this DTC appear?
-
Go to step 6
Go to «Diagnostic Information»
5
Replace the HO2S diagnostic oxygen sensor.
Has the replacement been made?
-
Go to step 7
-
6
Replace the ECM.
Has the replacement been made?
-
Go to step 7
-
7
  1. Start the engine.
  2. Drive to set DTCs as indicated in the help text.
DTC appears and disappears?
-
Go to step 8
Go to step 2
8
Use the scanning tool to view the accumulated information.
Does the scan tool display any DTCs that you did not diagnose?
-
Jump to the appropriate DTC table
System OK

Diagnostic Trouble code P0106




Manifold absolute pressure sensor performance (IDA)




Circuit Description


Electronic engine management controller (ECM) uses a manifold absolute pressure sensor (IDA) to control fuel delivery and ignition timing. The intake manifold pressure sensor measures changes in intake manifold pressure associated with changes in engine load (vacuum in the intake manifold) and change in speed and converts these changes into output signals. The ECM can determine if the intake manifold pressure sensor is not responding to changes in throttle position by comparing the actual change in intake manifold pressure based on the change in throttle position that occurs. If the ECM cannot register the expected change in intake manifold pressure, then DTC P0106 is set.

Conditions for Running the DTC


CARTER 1
  • The engine speed is less than 25 rpm.
  • Manifold absolute pressure sensor malfunction (MAP) not found.
CARTER 2
  • Engine running for at least 2 seconds.
  • MAP ETC sensor malfunction not detected.

Conditions for setting the DTC.


CARTER 1
  • Manifold absolute pressure (MAP) less than 400 hPa.
CARTER 2
  • Manifold absolute pressure difference (MAP), measured by the MAP sensor and the calculated MAP is greater than expected.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


With the ignition on and the engine stopped, the manifold pressure is equal to atmospheric pressure and the signal voltage is high. This information is used by the ECM as an indication of the vehicle's altitude. Comparing this reading with the reading of the same sensor on a serviceable vehicle allows you to check the accuracy of the questionable sensor.
The vacuum source of the MAP sensor must be carefully checked for any restriction on the intake manifold.

DTC P0106 - Manifold Absolute Pressure Sensor Performance (IDA)



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Connect the scan tool to the diagnostic terminal.
  2. Turn on the ignition without starting the engine.
  3. Compare the barometric pressure reading with the normal pressure of another vehicle.
Are barometric pressure readings similar?
-
Go to step 3
Go to step 8
3
Start the engine, monitor the value of the absolute pressure sensor in the intake manifold.
Does the value of the pressure sensor change when the engine is started?
-
Go to step 4
Go to step 5
4
With the engine running, quickly close the throttle while monitoring the MAP sensor on the scan tool.
Does the MAP sensor value change quickly when the throttle position is changed?
-
Go to step 9
Go to step 6
5
  1. Switch off the ignition.
  2. Remove the absolute pressure sensor and install the vacuum pump on the absolute pressure sensor.
  3. Switch on the ignition, do not start the engine.
  4. Serve 380 mm r.st. (15 inHg) to the absolute pressure sensor.
Does the value of the sensor on the scan tool change?
-
Go to step 7
Go to step 8
6
  1. Remove the absolute pressure sensor from the intake manifold.
  2. Inspect the hole and the sensor for the absence of narrowing of the section and eliminate the malfunction if necessary.
Has the renovation been completed?
-
Go to step 9
Go to step 8
7
Repair the restriction in the MAP sensor or vacuum port if necessary.
Has the renovation been completed?
-
Go to step 9
-
8
Replace MAP sensor.
Has the renovation been completed?
-
Go to step 9
-
9
  1. Using a scan tool, clear the DTCs.
  2. Start the engine and let it idle at normal operating temperature.
  3. Drive to set DTCs as indicated in the help text.
Does the scan tool report this diagnostic as passed and passed?
-
Go to step 10
Go to step 2
10
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic Trouble code P0107




Manifold Absolute Pressure Sensor Circuit (IDA), low signal level




Circuit Description


Electronic engine management controller (ECM) uses a manifold absolute pressure sensor (IDA) to control fuel delivery and ignition timing. The MAP sensor measures changes in intake manifold pressure associated with changes in engine load (vacuum in the intake manifold) and change in speed and converts these changes into output signals. The ECM supplies a 5 V control signal to the MAP sensor. As the manifold pressure changes, the MAP sensor output also changes. By monitoring the output signals of the MAP sensor, the ECM determines the manifold pressure. Low pressure outputs (low voltage) will be approximately 1.1 - 1.5 V at idle, while the high pressure output signals (high voltage) will be approximately 4.5 - 5.0 V at wide open throttle (WOT). The MAP sensor displays barometric pressure, allowing the ECM to make adjustments for various altitudes.

Conditions for Running the DTC


  • Ignition on.

Conditions for setting the DTC.


  • MAP sensor voltage is less than 0.156V for more than 1 second.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


With the ignition on and the engine stopped, the manifold pressure is equal to atmospheric pressure and the signal voltage is high.
The ECM uses this information as an indication of altitude. Comparing this reading with the reading of the same sensor on a serviceable vehicle allows you to check the accuracy of the questionable sensor. Readings should be the same±0.4 V.
If DTC P0107 is unstable, refer to «Checking Manifold Absolute Pressure» in this section for later diagnosis.
If the connections are good, pay attention to the signal level of the manifold absolute pressure sensor by moving the corresponding connectors and wiring harnesses. If there is a problem, the scan tool reading will change. This will help to localize the location of the intermittent fault.

DTC P0107 - Manifold Absolute Pressure Sensor Circuit (IDA), low signal level



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Connect the scan tool to the diagnostic terminal.
  2. Turn the ignition key to the ON position.
Scan Tool Indicates Manifold Absolute Pressure Sensor Signal Level (MAP) below the set value?
4.1B
Go to step 3
Go to step 4
3
  1. Disconnect the vacuum line from the MAP sensor.
  2. Create a vacuum for the MAP sensor at a level of 60 kPa (17.7 inches of mercury).
Does the scan tool indicate the manifold absolute pressure sensor signal level is within the specified value?
1.0-1.5V
Go to «Diagnostic Information»
Go to step 4
4
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the MAP sensor connector.
  3. Turn the ignition key to the ON position.
  4. Measure the signal level between terminals 1 and 3 of the MAP sensor connector.
Is the measured signal level within the set value?
4.5-5.5V
Go to step 5
Go to step 6
5
Connect a safety jumper between terminals 2 and 3 of the MAP sensor connector.
Does the scan tool indicate the Manifold Absolute Pressure (MPP) sensor signal is above the specified value?
4.5V
Go to step 13
Go to step 11
6
Measure the signal level between the MAP sensor connector terminal 1 and ground.
Is the measured signal level within the set value?
4.5-5.5V
Go to step 7
Go to step 8
7
  1. Turn the ignition switch to the LOCK position.
  2. Check for an open circuit between terminal 1 of the manifold absolute pressure sensor connector (IDA) and terminal 5 of the ECM connector J2.
Fault found?
-
Go to step 8
Go to step 9
8
  1. Repair the wire or connector terminal between terminal 1 of the manifold absolute pressure sensor connector (IDA) and terminal 5 of the ECM connector J2.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
9
  1. Turn the ignition switch to the LOCK position.
  2. Check wire between terminal 3 of manifold absolute pressure sensor connector (IDA) and terminal 13 of the ECM connector J2 for an open or short to ground.
Problem found?
-
Go to step 10
Go to step 11
10
  1. Repair wire or connector terminal if necessary.
  2. Clear all DTCs in the ECM.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
11
Check wire between manifold absolute pressure sensor connector terminal 2 (IDA) and terminal 19 of the ECM connector J2 for an open or short to ground.
Problem found?
-
Go to step 12
Go to step 14
12
  1. Repair the wire or connector terminal between terminal 2 of the manifold absolute pressure sensor connector (MAP) and terminal 19 of the ECM connector J2.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
13
  1. Replace MAP sensor.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
14
  1. Turn the ignition switch to the LOCK position.
  2. Replace the ECM.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-

Diagnostic trouble code P0108




Manifold Absolute Pressure Sensor Circuit (IDA), high signal level




Circuit Description


Electronic engine management controller (ECM) uses a manifold absolute pressure sensor (IDA) to control fuel delivery and ignition timing. The MAP sensor measures changes in intake manifold pressure associated with changes in engine load (vacuum in the intake manifold) and change in speed and converts these changes into output signals. The ECM supplies a 5 V control signal to the MAP sensor. As the manifold pressure changes, the MAP sensor output also changes. By monitoring the output signals of the MAP sensor, the ECM determines the manifold pressure. Low pressure outputs (low voltage) will be approximately 1.1 - 1.5 V at idle, while the high pressure output signals (high voltage) will be approximately 4.5 - 5.0 V at wide open throttle (WOT). The MAP sensor displays barometric pressure, allowing the ECM to make adjustments for various altitudes.

Conditions for Running the DTC


  • Ignition on.

Conditions for setting the DTC.


  • Manifold absolute pressure sensor voltage (MAP) more than 4.961 V.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


With the ignition on and the engine stopped, the manifold pressure is equal to atmospheric pressure and the signal voltage is high.
The ECM uses this information as an indication of altitude. Comparing this reading with the reading of the same sensor on a serviceable vehicle allows you to check the accuracy of the questionable sensor. Readings should be the same±0.4 V.
If DTC P0108 is intermittent, refer to «Checking Manifold Absolute Pressure» in this section for later diagnosis.
If the connections are good, pay attention to the signal level of the manifold absolute pressure sensor by moving the corresponding connectors and wiring harnesses. If there is a problem, the scan tool reading will change. This will help to localize the location of the intermittent fault.

DTC P0108 - Manifold Absolute Pressure Sensor Circuit (IDA), high signal level



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
Check for cracks, vacuum leaks, or blockages in the manifold absolute pressure sensor vacuum line (MAP).
Fault found?
-
Go to step 3
Go to step 4
3
  1. Repair or replace manifold absolute pressure sensor vacuum line (MAP).
  2. Carry out a road test.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
4
  1. Connect the scan tool to the diagnostic terminal (DLC).
  2. Turn the ignition key to the ON position.
  3. Scan Tool Indicates Manifold Absolute Pressure Sensor Signal Level (MAP) below the set value?
4.1B
Go to step 5
Go to step 6
5
  1. Disconnect the vacuum line from the MAP sensor.
  2. Create for Manifold Absolute Pressure Sensor (IDA) depression at the level of 60 kPa (17.7 inches of mercury).
Scan Tool Indicates Absolute Pressure Sensor Signal Level (MAP) in the collector within the set value?
1.1~1.5V
Go to «Diagnostic Information»
Go to step 6
6
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the MAP sensor connector.
  3. Turn the ignition key to the ON position.
  4. Measure the voltage between terminal 1 and 3 of the manifold absolute pressure sensor connector (MAP).
Is the voltage within the specified value?
4.5~5.5V
Go to step 7
Go to step 8
7
Connect a safety jumper between terminals 2 and 3 of the MAP sensor connector.
Scan Tool Indicates Manifold Absolute Pressure Sensor Voltage Level (MAP) above the set value?
4.5V
Go to step 15
Go to step 13
8
Measure the signal level between terminal 3 of the MAP sensor connector and ground.
Is the voltage within the specified value?
4.5~5.5V
Go to step 9
Go to step 11
9
Check for a short in the wire between terminal 1 of the manifold absolute pressure sensor connector (MAP) and terminal 5 of the ECM connector J2.
Fault found?
-
Go to step 10
Go to step 11
10
  1. Repair the wire or connector terminal between terminal 1 of the manifold absolute pressure sensor connector (MAP) and terminal 5 of the ECM connector J2.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
11
Check for a short in the wire between terminal 3 of the manifold absolute pressure sensor connector (IDA) and terminal 13 of the ECM connector J2.
Fault found?
-
Go to step 12
Go to step 13
12
  1. Repair the wire or connector terminal between terminal 3 of the manifold absolute pressure sensor connector (MAP) and terminal 13 of the ECM connector J2.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
13
Check for a short in the wire between terminal 2 of the manifold absolute pressure sensor connector (MAP) and terminal 19 of the ECM connector J2.
Fault found?
-
Go to step 14
Go to step 16
14
  1. Repair the wire or connector terminal between terminal 2 of the manifold absolute pressure sensor connector (MAP) and terminal 19 of the ECM connector J2.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
15
  1. Replace MAP sensor.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
16
  1. Turn the ignition switch to the LOCK position.
  2. Replace the ECM.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-

Diagnostic trouble code P0112




Intake Air Temperature Sensor Circuit Low




Circuit Description


Intake air temperature sensor (IAT) uses the thermistor to control the signal level to the ECM. Electronic engine management controller (ECM) supplies a 5 V control signal and a ground signal to the sensor. When the air is cold, the resistance is high, so the signal from the intake air temperature sensor will be high. When the intake air is warm, the resistance is low, so the intake air temperature sensor signal will be low.

Conditions for Running the DTC


  • Engine running for at least 240 seconds.
  • There is no fuel cutoff.

Conditions for setting the DTC.


  • The measured air temperature is more than 133.5°C.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


If vehicle is at ambient temperature, compare IAT sensor reading with coolant temperature sensor reading (EATING). The readings of the IAT and ECT sensors should be relatively close to each other. Use the values in the resistance versus temperature table to determine if a sensor is malfunctioning. See «Temperature dependence of resistance» in this section.

DTC P0112 - Intake Air Temperature Sensor Circuit Low



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Connect the scan tool to the diagnostic terminal.
  2. Start the engine and let it warm up to operating temperature.
Does the scan tool indicate the IAT sensor signal level is within the specified value?
20~80°C (68~176°F)
Go to «Diagnostic Information»
Go to step 3
3
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the IAT sensor connector.
  3. Turn the ignition key to the ON position.
Does the scan tool indicate the IAT sensor signal level is below the specified value?
-30°С (-22°F)
Go to step 4
Go to step 5
4
  1. Connect a jumper between terminal 2 and 1 of the intake air temperature sensor connector (IAT).
  2. Turn the ignition key to the ON position.
Scan tool Indicates Intake Air Temperature Sensor Voltage (IAT) above the set value?
120°C (248°F)
Go to step 5
Go to step 6
5
  1. Replace IAT sensor.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
6
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the ECM connector.
  3. Check for a short in the wire between terminal 2 of the intake air temperature sensor connector (IAT) and terminal 27 of the ECM connector J2.
Fault found?
-
Go to step 7
Go to step 8
7
  1. Repair the wire or connector terminal between terminal 2 of the intake air temperature sensor connector (IAT) and terminal 27 of the ECM connector J2.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
8
Check for a short in the wire between terminal 1 of the intake air temperature sensor connector (IAT) and terminal 5 of the ECM connector J2.
Fault found?
-
Go to step 9
Go to step 10
9
  1. Repair the wire or connector terminal between terminal 1 of the intake air temperature sensor connector (IAT) and terminal 5 of the ECM connector J2.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
10
  1. Turn the ignition switch to the LOCK position.
  2. Replace the ECM.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-

Diagnostic Trouble code P0113




Intake Air Temperature Sensor Circuit High




Circuit Description


Intake air temperature sensor (IAT) uses the thermistor to control the signal level to the ECM. Electronic engine management controller (ECM) supplies a 5 V control signal and a ground signal to the sensor. When the air is cold, the resistance is high, so the signal from the intake air temperature sensor will be high. When the intake air is warm, the resistance is low, so the intake air temperature sensor signal will be low.

Conditions for Running the DTC


  • Engine running for at least 240 seconds.
  • There is no fuel cutoff.

Conditions for setting the DTC.


  • The measured air temperature is below -36.8°C.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


  • If vehicle is at ambient temperature, compare IAT sensor reading with coolant temperature sensor reading (EATING). The readings of the IAT and ECT sensors should be relatively close to each other.
  • Use the values in the resistance versus temperature table to determine if a sensor is malfunctioning. See «Temperature dependence of resistance» in this section.

DTC P0113 - Intake Air Temperature Sensor Circuit High



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Connect the scan tool to the diagnostic terminal (DLC).
  2. Start the engine and let it warm up to operating temperature.
Scan tool Indicates Intake Air Temperature Sensor Signal Level (IAT) within the set value?
20~80°C (68~176°F)
Go to «Diagnostic Information»
Go to step 3
3
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the IAT sensor connector.
  3. Turn the ignition key to the ON position.
Scan tool Indicates Intake Air Temperature Sensor Signal Level (IAT) below the set value?
-30°C (-22°F)
Go to step 4
Go to step 6
4
  1. Connect a jumper between terminal 2 and 1 of the intake air temperature sensor connector (IAT).
  2. Turn the ignition key to the ON position.
Scan tool Indicates Intake Air Temperature Sensor Voltage (IAT) above the set value?
120°C (248°F)
Go to step 5
Go to step 6
5
  1. Replace IAT sensor.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
6
Measure the signal level between IAT sensor connector terminal 2 and ground.
Is the measured voltage within the specified range?
4.5~5.5V
Go to step 7
Go to step 8
7
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the ECM connector.
  3. Check the wire between terminal 2 of the intake air temperature sensor connector (IAT) and ECM connector J2 terminal 27 for a short to the ECM reference voltage.
Fault found?
-
Go to step 9
Go to step 8
8
Check for an open or short in the wire between terminal 2 of the intake air temperature sensor connector (IAT) and terminal 27 of the ECM connector J2.
Fault found?
-
Go to step 10
Go to step 11
9
  1. Repair a short to the ECM reference voltage on the wire between the IAT sensor connector terminal 2 (IAT) and terminal 27 of the ECM connector J2.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
10
  1. Repair open or short in the wire between terminal 2 of the intake air temperature sensor connector (IAT) and terminal 27 of the ECM connector J2.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
11
Check for an open or short in the wire between terminal 1 of the intake air temperature sensor connector (IAT) and terminal 5 of the ECM connector J2.
Fault found?
-
Go to step 12
Go to step 13
12
  1. Repair an open or short in the wire between track 1 of the intake air temperature sensor connector (IAT) and terminal 5 of the ECM connector J2.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
13
  1. Turn the ignition switch to the LOCK position.
  2. Replace the ECM.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-

Diagnostic trouble code (DTC) P0116




Engine coolant temperature sensor performance (ETS)




Circuit Description


DTC P0116 checks the accuracy of the signal from the coolant temperature sensor (ECT). coolant temperature sensor (ECT) is a thermistor. A thermistor is a resistor whose resistance changes with temperature. Coolant temperature sensor resistance (ECT) high when the coolant temperature is low. ECT sensor resistance is low when coolant temperature is high. The ECM is supplying the coolant temperature sensor (ECT) voltage 5V. The ECM monitors voltage from the coolant temperature sensor (ECT) and converts the voltage into temperature readings. The ECM receives a high voltage input when the coolant temperature is low. The ECM receives a low voltage input when the coolant temperature is high. DTC P0116 may set if the coolant temperature sensor voltage is (ECT) does not indicate that the engine coolant temperature has increased sufficiently while the engine is running.

Conditions for Running the DTC


  • Ignition switch in the on position.
  • There is no temperature change after startup.
  • Cylinder block heater not detected.

Conditions for setting the DTC.


  • The ECM has detected a difference of more than 15°C between the measured and calculated coolant temperature.
  • Fault counter has exceeded 30 (when the sensor voltage fluctuation changes by more than 0.2V).
  • The sudden discrepancy time exceeds 2.5 seconds.
  • The changing voltage of the sensor is higher than 1.0 V.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


Check for the following conditions:
  • Check the engine cooling system for proper operation, including the correct coolant level.
  • A defective thermostat that remains ajar can cause DTC P0116 to occur in cold weather when the vehicle is running cold.
  • Check the electrical connection to the ECM.
An intermittent fault may be caused by a problem in the engine coolant temperature sensor circuit (EATING). Check for intermittent faults in the wiring harness or individual components.
Repair any electrical circuit problems found.
If DTC P0116 cannot be repeated, then the information included in the status record buffer may be helpful in determining conditions when the DTC is first set.

DTC P0116 - Engine Coolant Temperature Sensor Performance (ETS)



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
Using a scan tool, check for DTC P0117 or DTC P0118.
Is DTC P0117 or P0118 present?
-
Jump to the appropriate DTC table
Go to step 3
3
  1. Measure actual engine coolant temperature (ECT).
  2. Switch on the ignition with the engine off.
  3. Check Scan Tool Engine Coolant Temperature Sensor Parameters (EATING).
Are the readings of the coolant temperature sensor (ECT) close to the actual coolant temperature?
-
Go to step 11
Go to step 4
4
  1. Disconnect the coolant temperature sensor connector (EATING).
  2. Check Scan Tool Engine Coolant Temperature Sensor Parameters (EATING).
Coolant temperature value (ECT) less than the set value?
-30°C (-22°F)
Go to step 5
Go to step 8
5
  1. Jumper between the input circuit of the coolant temperature sensor (ECT) and ground circuit at the coolant temperature sensor harness connector (ECT).
  2. Check Scan Tool Engine Coolant Temperature Sensor Parameters (EATING).
Coolant temperature value (ECT) higher than the set value?
180°C (356°F)
Go to step 13
Go to step 6
6
  1. Jumper between the input circuit of the coolant temperature sensor (ECT) and chassis weight.
  2. Check Scan Tool Engine Coolant Temperature Sensor Parameters (EATING).
Coolant temperature value (ECT) higher than the set value?
180°C (356°F)
Go to step 7
Go to step 8
7
Repair an open or electrical resistance in the coolant temperature sensor ground circuit (ECT).
Has the renovation been completed?
-
Go to step 14
Go to step 9
8
  1. Switch off the ignition.
  2. Disconnect the ECM electrical connector.
  3. Check coolant temperature sensor input circuit (ECT) short circuit or high electrical resistance.
  4. Troubleshoot if necessary.
Was a repair necessary?
-
Go to step 14
Go to step 9
9
  1. Check the electrical connectors of the ECM and coolant temperature sensor (EATING).
  2. Troubleshoot if necessary.
Was a repair necessary?
-
Go to step 14
Go to step 10
10
Replace the ECM.
Has the replacement been completed?
-
Go to step 14
-
11
  1. Check the engine cooling system as follows:
    • Faulty thermostat.
    • Low coolant level.
    • Incorrect coolant.
    • Error in the cooling system.
  2. Troubleshoot if necessary.
Was a repair necessary?
-
Go to step 14
Go to step 12
12
  1. Using a scan tool, clear the DTC.
  2. Make a car trip according to the conditions of the status record buffer.
Does DTC P0116 set?
-
Go to step 13
Go to «Diagnostic Information»
13
Replace ECT sensor.
Has the replacement been completed?
-
Go to step 14
-
14
  1. Start the engine.
  2. Operate the vehicle within the conditions for setting the DTC, as defined in the explanatory text, or until DTC P0116 has been run.
DTC appears and disappears?
-
Go to step 15
Go to step 2
15
Use the scanning tool to view the accumulated information.
Does the scan tool display any DTCs that you did not diagnose?
-
Jump to the appropriate DTC table
System OK

Diagnostic Trouble code P0117




Engine Coolant Temperature Sensor Circuit Low




Circuit Description


In the engine coolant temperature sensor (ECT) the thermistor is used to control the signal level to the ECM.
The ECM applies a signal to the sensor signal circuit. When the air is cold, the resistance is high, so the signal from the intake air temperature sensor will be high.
As the motor heats up, the resistance of the sensor increases and the voltage drops. At normal engine operating temperature, the voltage at the ECT signal terminal will be between 1.5 and 2.0 V.

Conditions for Running the DTC


  • Ignition switch in the on position.

Conditions for setting the DTC.


  • Coolant temperature sensor temperature (ECT) over 128.3°C.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


After starting the engine, the temperature of the engine coolant should gradually increase to approximately 90°C (194°F), and then stabilize when the thermostat opens.
Use the values in the resistance versus temperature table to determine if a sensor is malfunctioning. See «Temperature dependence of resistance» in this section.

DTC P0117 - Engine Coolant Temperature Sensor Circuit Low



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Connect the scan tool to the diagnostic terminal (DLC).
  2. Start the engine and let it warm up to operating temperature.
Scan Tool Shows Engine Coolant Temperature Sensor Values (EATING) within the set value?
80~110°C (176~260°F)
Go to «Diagnostic Information»
Go to step 3
3
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the ECT sensor connector.
  3. Turn the ignition key to the ON position.
Scan Tool Indicates Engine Coolant Temperature Sensor Value (EATING) below the set value?
-30°C (-22°F)
Go to step 4
Go to step 6
4
  1. Connect a jumper wire between terminal 1 and 2 of the coolant temperature sensor connector (EATING).
  2. Turn the ignition key to the ON position.
Scan Tool Indicates Engine Coolant Temperature Sensor Value (EATING) above the set value?
180°C (356°F)
Go to step 5
Go to step 6
5
  1. Replace ECT sensor.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
6
Check for a short to ground in the wire between terminal 1 of the coolant temperature sensor connector (EATING) and terminal 28 of the ECM connector J2.
Fault found?
-
Go to step 7
Go to step 8
7
  1. Repair short in wire between coolant sensor connector terminal 1 (EATING) and terminal 28 of the ECM connector J2.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
8
Check for a short to ground on the wire between terminal 2 of the coolant sensor connector (EATING) and terminal 6 of the ECM connector J2.
Fault found?
-
Go to step 9
-
9
  1. Repair short in wire between terminal 2 of coolant temperature sensor connector (ECT) and terminal 6 of the ECM connector.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
10
  1. Turn the ignition switch to the LOCK position.
  2. Replace the ECM.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-

Diagnostic trouble code P0118




Engine Coolant Temperature Sensor Circuit High




Circuit Description


In the coolant temperature sensor (ECT) a thermistor is used to control the voltage of the signal to the ECM.
The ECM applies a signal to the sensor signal circuit. When the air is cold, the resistance is high, so the signal from the intake air temperature sensor will be high.
As the motor heats up, the resistance of the sensor increases and the voltage drops. At normal engine operating temperature, the voltage at the ECT sensor signal terminal will be between 1.5 and 2.0 V.

Conditions for Running the DTC


  • Ignition switch in the on position.

Conditions for setting the DTC.


  • The temperature of the ECT sensor is below -38.3°C.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


After starting the engine, the temperature of the engine coolant should gradually increase to approximately 90°C (194°F), and then stabilize when the thermostat opens.
Use the values in the resistance versus temperature table to determine if a sensor is malfunctioning. See «Temperature dependence of resistance» in this section.

DTC P0118 - Engine Coolant Temperature Sensor Circuit High



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Connect the scan tool to the diagnostic terminal (DLC).
  2. Start the engine and let it warm up to operating temperature.
Scan Tool Shows Engine Coolant Temperature Sensor Values (EATING) within the set value?
80~110°C (176~230°F)
Go to «Diagnostic Information»
Go to step 3
3
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the ECT sensor connector.
  3. Turn the ignition key to the ON position.
Scan Tool Indicates Engine Coolant Temperature Sensor Value (EATING) below the set value?
-30°С (-22°F)
Go to step 4
Go to step 6
4
  1. Connect a jumper wire between terminal 1 and 2 of the coolant temperature sensor connector (EATING).
  2. Turn the ignition key to the ON position.
Scan Tool Indicates Engine Coolant Temperature Sensor Value (EATING) above the set value?
180°C (356°F)
Go to step 5
Go to step 6
5
  1. Replace ECT sensor.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
6
Measure the signal level between terminal 1 and ground of the ECT sensor connector.
Is the voltage value within the limits of the set values?
4.5-5.5V
Go to step 7
Go to step 8
7
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the ECM connector.
  3. Check the wire between terminal 2 of the coolant temperature sensor connector (EATING) and ECM connector J2 terminal 6 for a short to the ECM reference voltage.
Fault found?
-
Go to step 9
Go to step 8
8
Check for an open or short in the wire between terminal 2 of the coolant temperature sensor connector (EATING) and terminal K37 of the ECM connector.
Fault found?
-
Go to step 10
Go to step 11
9
  1. Repair a short to the ECM reference voltage on the wire between the coolant temperature sensor connector terminal 2 (EATING) and terminal 6 of the ECM connector J2.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
10
  1. Repair an open or short in the wire between the coolant temperature sensor connector terminal 2 (EATING) and terminal 6 of the ECM connector J2.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
11
Check for an open or short in the wire between the coolant temperature sensor connector terminal 1 (EATING) and terminal 28 of the ECM connector J2.
Fault found?
-
Go to step 12
Go to step 13
12
  1. Repair the open or short in the wire between the ECT ECT sensor connector terminal 1 and the ECM connector J2 terminal 28.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
13
  1. Turn the ignition switch to the LOCK position.
  2. Replace the ECM.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-

Diagnostic trouble code (DTC) P0121




Throttle position sensor 1 performance (TP)




Circuit Description


Throttle body assembly contains 2 throttle position sensors (TP). Throttle Position Sensors (TP) mounted on the throttle body assembly and are maintenance free. Throttle Position Sensors (TP) provide a voltage that varies with throttle angle. The ECM powers the throttle position sensors (TP) common 5V control circuit, common low voltage control circuit and 2 independent signal circuits.
Throttle Position Sensors (TP) have the opposite functionality. Throttle position sensor TP 1 increases signal voltage from 1 volt at idle to 4 volts at wide open throttle (WOT). Throttle position sensor TP 2 reduces the signal voltage from 4 volts at idle to 1 volt at wide open throttle.

Conditions for Running the DTC


  • Ignition switch in the on position.
  • The difference between TP1 and TP2 sensor values is more than 6.3%.

Conditions for setting the DTC.


  • Throttle Position Sensor Actual Value (TP) over 9.0.

Action Taken When the DTC Sets


  • Malfunction indicator lamp (MIL) lights up immediately after a malfunction occurs.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


If DTC P0121 cannot be reproduced, fault status log information may be helpful. Use the DTC information data from the scan tool to determine the status of the DTC.

DTC P0121 - Throttle Position Sensor 1 Performance (TR)



Step Operation Values Yes No
1
Have you performed a diagnostic system check?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Start the engine.
  2. Perform the following checks:
    • Quickly depress the accelerator pedal from the starting position to the wide open throttle position (WOT) and release the pedal. Repeat the procedure several times.
    • Slowly depress the accelerator pedal until the throttle is fully open and then slowly return the pedal to the closed throttle position. Repeat the procedure several times.
  1. Check throttle position sensor 1 and 2 parameters (TR) scanning device.
Agree is displayed on the scan tool (Agree)?
-
Go to step 3
Go to step 5
3
  1. Turn off the engine.
  2. Switch on the ignition with the engine off.
  3. Verify the throttle position sensor 1 voltage parameters with a scan tool.
Is the voltage within the specified range?
0.40-0.8V
Go to step 4
Go to step 5
4
  1. Examine the failure log data for this DTC.
  2. Switch off the ignition for 30 seconds
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 5
Go to «Diagnostic Information»
5
  1. Switch off the ignition.
  2. Disconnect the throttle body harness connector.
  3. Switch on the ignition with the engine off.
  4. Connect a test light between the 5V throttle position sensor control circuit (TP) and the ECM housing.
  5. Connect the digital multimeter to the test lamp probe and the ECM housing.
Is the voltage higher than specified?
4.8v
Go to step 6
Go to step 11
6
  1. Connect a 3 amp fused jumper wire between the 5 volt throttle position sensor control circuit (TP) and Throttle Position Sensor Signal Circuit 1 (TP).
  2. Check the throttle position sensor 1 voltage parameters with a scan tool.
Is the voltage higher than specified?
4.8v
Go to step 7
Go to step 9
7
  1. Connect a 3 amp soft-fused jumper wire between the 5 volt TP sensor control circuit and the TP sensor signal 2 circuit (TP).
  2. Observe the throttle position sensor 2 voltage parameters with a scan tool.
Is the voltage higher than specified?
4.8V
Go to step 8
Go to step 10
8
  1. Switch off the ignition.
  2. Remove the ECM/TCM fuse from the fuse box in the engine compartment.
  3. Measure the resistance from the throttle position sensor low voltage control circuit to the ECM housing with a digital multimeter.
Is the resistance below the specified value?
5 ohm
Go to step 13
Go to step 12
9
Check Throttle Position Sensor 1 Signal Circuit (TP) high resistance or open circuit.
Fault found and corrected?
-
Go to step 17
Go to step 14
10
Check Throttle Position Sensor 2 Signal Circuit (TP) high resistance or open circuit.
Fault found and corrected?
-
Go to step 17
Go to step 14
11
Test the 5V Throttle Position Sensor Control Circuit (TP) and all common 5 volt control circuits for high resistance or an open.
Fault found and corrected?
-
Go to step 17
Go to step 14
12
Check low voltage throttle position sensor control circuit (TP) high resistance or open circuit.
Fault found and corrected?
-
Go to step 17
Go to step 14
13
Check for shorted terminals and tight connections at the throttle body.
Fault found and corrected?
-
Go to step 17
Go to step 15
14
Check the terminals for shorts and the connections at the throttle body and the ECM are secure.
Fault found and corrected?
-
Go to step 17
Go to step 16
15
Replace throttle body assembly.
Has the replacement been made?
-
Go to step 17
-
16
Replace the ECM.
Has the replacement been made?
-
Go to step 17
-
17
  1. Clear the DTCs with a scan tool.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 2
Go to step 18
18
Check for additional DTCs set.
Are there any DTCs that have not yet been diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code P0122




Throttle position sensor 1 circuit (TP), low voltage




Circuit Description


Throttle body assembly contains 2 throttle position sensors (TP). Throttle Position Sensors (TP) mounted on the throttle body assembly and are maintenance free. Throttle Position Sensors (TP) provide a voltage that varies with throttle angle. The ECM powers the throttle position sensors (TP) common 5V control circuit, common low voltage control circuit and 2 independent signal circuits.
Throttle Position Sensors (TP) have the opposite functionality. Throttle position sensor TP 1 increases signal voltage from 1 volt at idle to 4 volts at wide open throttle (WOT). Throttle position sensor TP 2 reduces the signal voltage from 4 volts at idle to 1 volt at wide open throttle.

Conditions for Running the DTC


  • Ignition switch in the on position.

Conditions for setting the DTC.


  • Throttle position sensor voltage is less than 0.176V.

Action Taken When the DTC Sets


  • Malfunction indicator lamp (MIL) lights up immediately after a malfunction occurs.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


If DTC P0122 cannot be reproduced, fault status log information may be helpful. Use the scan tool information to determine the status of DTCs. If the DTCs are intermittent, use of DTC P0121 will help isolate the problem.

DTC P0122 - Throttle Position Sensor 1 Circuit Low Voltage



Step Operation Values Yes No
1
Have you performed a diagnostic system check?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Switch on the ignition with the engine off.
  2. Verify the throttle position sensor 1 voltage parameters with a scan tool.
Is the voltage less than the specified value?
0.18V
Go to step 4
Go to step 3
3
  1. Examine the failure log data for this DTC.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 4
Go to «Diagnostic Information»
4
Check the DTC data with a scan tool.
Is DTC P0222 also set?
-
Go to step 5
Go to step 6
5
  • Switch off the ignition.
  • Disconnect the throttle body harness connector.
  • Switch on the ignition with the engine off.
  • Set up a digital multimeter to test the current on the 400 mA scale.
  • Measure the current between the 5 volt throttle position sensor control circuit (TP) and the ECM housing.
Is the current higher than the set value?
50mA
Go to step 9
Go to step 7
6
  1. Switch off the ignition.
  2. Disconnect the throttle body harness connector.
  3. Switch on the ignition with the engine off.
  4. Connect a 3 amp fused jumper wire between the 5 volt throttle position sensor control circuit (TP) and Throttle Position Sensor Signal Circuit 1 (TP).
  5. Verify the throttle position sensor 1 voltage parameters with a scan tool.
Is the voltage within the specified range?
4.8-5.2V
Go to step 9
Go to step 8
7
Test the 5V Throttle Position Sensor Control Circuit (TP) and all common 5V control circuits as follows:
  • cliff
  • Short circuit to ground
  • high resistance
Fault found and corrected?
-
Go to step 13
Go to step 10
8
Test the throttle position sensor 1 signal circuit for the following conditions:
  • cliff
  • Short circuit to ground
  • high resistance
Fault found and corrected?
-
Go to step 13
Go to step 10
9
Check for intermittent irregularities and poor connection of the throttle body assembly.
Fault found and corrected?
-
Go to step 13
Go to step 11
10
Check the ECM for intermittent faults or loose connections.
Fault found and corrected?
-
Go to step 13
Go to step 12
11
Replace throttle body assembly.
Has the replacement been made?
-
Go to step 13
-
12
Replace the ECM.
Has the replacement been made?
-
Go to step 13
-
13
  1. Clear the DTCs with a scan tool.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 2
Go to step 14
14
Check for additional DTCs set.
Are there any DTCs that have not yet been diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code P0123




Throttle position sensor 1 circuit (TP), high voltage




Circuit Description


Throttle body assembly contains 2 throttle position sensors (TP). Throttle Position Sensors (TP) mounted on the throttle body assembly and are maintenance free. Throttle Position Sensors (TP) provide a voltage that varies with throttle angle. The ECM powers the throttle position sensors (TP) common 5V control circuit, common low voltage control circuit and 2 independent signal circuits.
Throttle Position Sensors (TP) have the opposite functionality. Throttle position sensor TP 1 increases signal voltage from 1 volt at idle to 4 volts at wide open throttle (WOT). Throttle position sensor TP 2 reduces the signal voltage from 4 volts at idle to 1 volt at wide open throttle.

Conditions for Running the DTC


  • Ignition switch in the on position.

Conditions for setting the DTC.


  • Throttle position sensor voltage is greater than 4.629 V.

Action Taken When the DTC Sets


  • Malfunction indicator lamp (MIL) lights up immediately after a malfunction occurs.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


If DTC P0123 cannot be reproduced, fault status log information may be helpful. Use the scan tool information to determine the status of DTCs. If the DTCs are intermittent, use of DTC P0121 will help isolate the problem.

DTC P0123 - Throttle Position Sensor 1 Circuit High Voltage



Step Operation Values Yes No
1
Have you performed a diagnostic system check?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Switch on the ignition with the engine off.
  2. Verify the throttle position sensor 1 voltage parameters with a scan tool.
Is the voltage higher than specified?
4.5V
Go to step 5
Go to step 3
3
Check the DTC data with a scan tool.
Is DTC P0223 showing a misfire?
-
Go to step 5
Go to step 4
4
  1. Examine the failure log data for this DTC.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 5
Go to «Diagnostic Information»
5
  1. Switch off the ignition.
  2. Disconnect the throttle body harness connector.
  3. Switch on the ignition with the engine off.
  4. Verify the throttle position sensor 1 voltage parameters with a scan tool.
Is the voltage less than the specified value?
0.1 V
Go to step 6
Go to step 9
6
Measure the voltage between the 5 volt throttle position sensor control circuit (TP) and the ECM housing with a digital multimeter.
Is the voltage higher than specified?
5.2V
Go to step 10
Go to step 7
7
  1. Switch off the ignition.
  2. Remove the ECM/TCM fuse from the fuse box in the engine compartment.
  3. Measure the resistance from the throttle position sensor low voltage control circuit to the ECM housing with a digital multimeter.
Is the resistance below the specified value?
5 ohm
Go to step 12
Go to step 8
8
  1. Install the ECM/TCM fuse.
  2. Switch on the ignition with the engine off.
  3. Measure the voltage between the throttle position sensor low voltage control circuit and the ECM housing with a digital multimeter.
Is the voltage less than the specified value?
1B
Go to step 11
Go to step 14
9
Test the throttle position sensor 1 signal circuit for a short to voltage.
Fault found and corrected?
-
Go to step 17
Go to step 13
10
Test the 5V Throttle Position Sensor Control Circuit (TP) and all common 5V control circuits for a short to voltage.
Fault found and corrected?
-
Go to step 17
Go to step 13
11
  1. Switch off the ignition.
  2. Disconnect the ECM
  3. Test the throttle position sensor low voltage control circuit for an open or high resistance.
Fault found and corrected?
-
Go to step 17
Go to step 13
12
Check the terminals for a short circuit and whether the throttle sensor is securely installed.
Fault found and corrected?
-
Go to step 17
Go to step 15
13
Check the contacts for a short circuit and the connections to the ECM.
Fault found and corrected?
-
Go to step 17
Go to step 16
14
Repair the breakdown voltage in the throttle position sensor low voltage control circuit.
Repair completed?
-
Go to step 17
-
15
Replace throttle body assembly.
Has the replacement been made?
-
Go to step 17
-
16
Replace the ECM.
Has the replacement been made?
-
Go to step 17
-
17
  1. Clear the DTCs with a scan tool.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 2
Go to step 18
18
Check for additional DTCs set.
Are there any DTCs that have not yet been diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code (DTC) P0125




Engine coolant temperature (EATING) insufficient to enable a closed fuel supply control loop




Circuit Description


Immediately after starting the engine, the control system operates in open loop, ignoring the signal from the oxygen sensor (O2S) and calculating the air-fuel mixture only from signals from the coolant temperature, throttle position and manifold absolute pressure sensors. Electronic engine management controller (ECM) will start using the oxygen sensor signal to regulate fuel delivery (with closed control loop), when the following conditions are met:
  • The engine has been running for a minimum period of time, determined by the engine coolant temperature after the engine has been started.
  • The oxygen sensor outputs an AC voltage signal, which indicates that it has warmed up enough to function properly.
  • The engine coolant temperature has risen to the minimum value specified for the engine after starting.

Conditions for Running the DTC


  • Ignition switch in the on position.
  • Cylinder block heater not blocked.
  • Engine start temperature, depending on the time period.

Conditions for setting the DTC.


  • The temperature of the coolant temperature sensor is less than -8°C.

Action Taken When the DTC Sets


  • Malfunction indicator indicator lamp (MIL) lights up immediately after a malfunction occurs.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


If DTC P0125 is set, the cause is a faulty coolant temperature sensor or a stuck open thermostat.
An intermittent fault can be caused by a loose connection, frayed insulation, or a broken wire under the insulation.
Check for a loose connection or damaged ECM harness. Test the engine coolant temperature sensor signal circuit and ground terminals for the following conditions:
  • Terminal connection
  • Locks malfunction
  • Deformity
  • Terminal damage
  • Weak connection of terminals with wires
  • Harness damage
Perform an intermittent fault test. If the connectors and harnesses check are normal, observe the digital voltmeter connected between the engine coolant temperature sensor signal circuit and the ground circuit terminals by moving the appropriate connectors and harnesses. If a fault occurs, the resistance reading will change. This will help locate the source of the problem.
Use the values in the resistance versus temperature table to determine if a sensor is malfunctioning.

DTC P0125 - Coolant Temperature Insufficient to Engage Closed Loop Fuel Control



Step Operation Values Yes No
1
Perform a diagnostic system check.
Check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Allow the engine to cool completely to ambient temperature.
  2. Switch on the ignition, do not start the engine.
  3. Install the diagnostic tool.
  4. Compare Coolant Temperature Sensor Readings (EATING) with intake air temperature sensor readings (IAT).
Do the readings of the temperature sensors approximately correspond to each other?
-
Go to step 4
Go to step 3
3
  1. Disconnect the coolant temperature sensor connector (EATING).
  2. With a digital voltmeter (DVM) Measure the resistance across terminals 1 and 2 of the coolant temperature sensor.
  3. Check that the value of the coolant temperature sensor corresponds to the actual coolant temperature using the resistance-temperature table.
Does the coolant temperature gauge accurately display the actual engine coolant temperature?
-
Go to step 4
Go to step 9
4
Disconnect the coolant temperature sensor connector (EATING).
Is the coolant temperature sensor value less than the specified value?
5 V
Go to step 8
Go to step 5
5
Jumper the engine coolant temperature sensor signal circuit, terminal 1, the sensor ground circuit, and terminal 2 at the engine coolant temperature sensor connector.
Is the coolant temperature sensor value greater than the specified value?
0 V
Go to step 7
Go to step 6
6
Check that the cooling system is functioning properly and repair if necessary.
Repair needed?
-
Go to step 10
Go to «Diagnostic Information»
7
Check ECM electrical connector terminals 1 and 2 and ECM electrical connector J2 terminals 6 and 2 for loose or bad terminals, repair as necessary.
Repair needed?
-
Go to step 10
Go to step 8
8
  1. Switch off the ignition.
  2. Replace the ECM.
The work is done?
-
Go to step 10
-
9
Replace ECT sensor.
The work is done?
-
Go to step 10
-
10
  1. Using a scan tool, clear the DTCs.
  2. Start the engine and let it idle at normal operating temperature.
  3. Drive to set DTCs as indicated in the help text.
Does the scan tool report this diagnostic as passed and passed?
-
Go to step 11
Go to step 12
11
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code P0131




Low voltage sensor 1 in the HO2S sensor circuit




Circuit Description


The ECM supplies approximately 0.45 V to terminals 22 and 3 of the ECM J2 connector. oxygen sensor (O2) changes the voltage in the range of about 1V if the exhaust is rich, and reduces it to about 0.1V if the exhaust is lean. The O2 oxygen sensor is like an open circuit and does not supply voltage when the temperature is below 300°C (600°F). O2 sensor open circuit or cold O2 sensor initiate operation "open circuit".

Conditions for Running the DTC


  • HO2S2 voltage is over 0.5V.
  • HO2S1 oxygen control (in exhaust gases) activated.

Conditions for setting the DTC.


  • HO2S voltage is less than 0.06V.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


Normal scan tool voltage varies between 0.1 V and 1.0 V in a closed loop.
Check oxygen sensor wire (O2). The oxygen sensor may be incorrectly installed and in contact with the exhaust manifold.
Check for an intermittent short to ground in the wire between the oxygen sensor and the ECM.
Check injector balance to determine if lean mixture is caused by a clogged injector.
The vacuum in the crankcase due to its leakage causes the mixture to become lean.
A leaky exhaust manifold gasket can cause outside air to be drawn into the exhaust and past the sensor.

DTC P0131 - HO2S Circuit Low Voltage Sensor 1



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Connect the scan tool to the diagnostic terminal.
  2. Start the engine and let it warm up to operating temperature.
  3. Check operation in closed circuit.
Does the ECM go into closed loop?
-
Go to step 3
Go to step 9
3
  1. Start the engine and let it warm up to operating temperature.
  2. Depress the accelerator pedal while observing the smoothness of the change in the HO2S voltage.
Does the scan tool indicate HO2S voltage within the specified value?
0.352~0.498V
Go to step 5
Go to step 4
4
Does the scan tool show a constant oxygen sensor signal level within the set value?
0.01 V
Go to step 7
Go to «Diagnostic Information»
5
  1. Disconnect the oxygen sensor connector.
  2. Let the hot engine run at idle.
Does the scan tool indicate the oxygen sensor signal level is within the specified value?
0.352~0.498V
Go to «Diagnostic Information»
Go to step 6
6
  1. Turn the ignition switch to the LOCK position.
  2. Check for an open in the wire between terminals 1, 4 of the oxygen sensor connector J2 and terminals 21, 11 of the ECM connector, respectively.
Fault found?
-
Go to step 8
Go to step 11
7
  1. Turn the ignition switch to the LOCK position.
  2. Check for a short to ground in the wire between the oxygen sensor connector terminal 1 and the ECM connector J2 terminal 21.
Fault found?
-
Go to step 8
Go to step 11
8
  1. Repair wire or connector terminal if necessary.
  2. Clear all DTCs from the ECM.
  3. Test the car on the go.
  4. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
9
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the oxygen sensor connector.
  3. Turn the ignition key to the ON position.
Does the scan tool indicate the oxygen sensor voltage is within the specified value?
Approximately 0.45V
Go to step 10
Go to step 11
10
  1. Replace oxygen sensor.
  2. Clear all DTCs from the ECM.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
11
  1. Replace the ECM.
  2. Perform a diagnostic system check.
Has the renovation been completed?
-
Go to step 12
-
12
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code P0132




High voltage sensor 1 in the HO2S sensor circuit




Circuit Description


The ECM supplies approximately 0.45 V to terminals 22 and 3 of the ECM J2 connector. oxygen sensor (O2) changes the voltage in the range of about 1V if the exhaust is rich, and reduces it to about 0.1V if the exhaust is lean. The O2 oxygen sensor is like an open circuit and does not supply voltage when the temperature is below 300°C (600°F). O2 sensor open circuit or cold O2 sensor initiate operation "open circuit".

Conditions for Running the DTC


  • HO2S2 voltage is over 0.5V.
  • HO2S1 oxygen control (in exhaust gases) activated.

Conditions for setting the DTC.


  • The oxygen sensor voltage is greater than 1.08 V.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


Normal scan tool voltage varies between 0.1 V and 1.0 V in a closed loop.
Check oxygen sensor wire (O2). The oxygen sensor may be incorrectly installed and in contact with the exhaust manifold.
Check for an intermittent short to ground in the wire between the oxygen sensor and the ECM.
Check injector balance to determine if lean mixture is caused by a clogged injector.
The vacuum in the crankcase due to its leakage causes the mixture to become lean.
A leaky exhaust manifold gasket can cause outside air to be drawn into the exhaust and past the sensor.

DTC P0132 - HO2S Circuit High Voltage Sensor 1



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Switch on the ignition, do not start the engine.
  2. Install the diagnostic tool.
  3. The engine is at operating temperature.
  4. Depress the accelerator pedal while observing the smoothness of the change in the HO2S voltage.
Does the scan tool indicate the HO2S voltage is higher than the specified value?
4.0 V
Go to step 3
Go to step 6
3
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the oxygen sensor connector and the ECM connector.
  3. Check the wire between the O2 sensor connector J2 terminal 1 and the ECM connector terminal 21 for a short to battery voltage.
Fault found?
-
Go to step 4
Go to step 5
4
  1. Repair wire or connector terminal if necessary.
  2. Clear all DTCs from the ECM.
  3. Test the car on the go.
  4. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
5
  1. Turn the ignition switch to the LOCK position.
  2. Replace oxygen sensor.
  3. Test the car on the go.
  4. Perform a diagnostic system check.
Is the replacement finished?
-
Go to step 7
-
6
  1. Turn the ignition switch to the LOCK position.
  2. Replace the ECM.
  3. Test the car on the go.
  4. Perform a diagnostic system check.
Is the replacement finished?
-
Go to step 7
-
7
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code P0133




HO2S Slow Response Sensor 1




Circuit Description


The ECM supplies approximately 0.45 V to terminals 22 and 3 of the ECM J2 connector. oxygen sensor (O2) changes the voltage in the range of about 1V if the exhaust is rich, and reduces it to about 0.1V if the exhaust is lean. The O2 oxygen sensor is like an open circuit and does not supply voltage when the temperature is below 300°C (600°F). O2 sensor open circuit or cold O2 sensor initiate operation "open circuit".

Conditions for Running the DTC


  • The number of engine revolutions in the range from 1600 to 2840 rpm.
  • Exhaust gas temperature above 450°C.
  • Engine load between 30% and 65%.
  • HO2S1 oxygen control (in exhaust gases) activated.
  • HO2S1 heater diagnostic completed.

Conditions for setting the DTC.


  • The O2 sensor signal cycle time is greater than 3 seconds.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


The normal scan tool signal varies between 0.15 V and 8.5 V in a closed loop. If DTC P0133 is intermittent, refer to «Intermittent faults» in this section.

DTC P0133 - HO2S Slow Response Sensor 1



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Connect the scan tool to the diagnostic terminal.
  2. Start the engine and let it warm up to operating temperature.
  3. Check operation in closed circuit.
Is the scan tool detecting a closed loop?
-
Go to step 3
Go to step 4
3
  1. Turn the ignition switch to the LOCK position.
  2. View status recording data and write parameters.
  3. Drive under the conditions of the recorded conditions and the conditions for setting the DTC.
Is the scan tool detecting a closed loop?
-
Go to step 12
Go to step 4
4
  1. Disconnect diagnostic oxygen sensor connector (HO2S).
  2. Connect terminal 1 of the oxygen sensor to ground.
  3. Turn the ignition key to the ON position.
Does the scan tool indicate the oxygen sensor signal level is within the specified value?
0.4~0.5V
Go to step 5
Go to step 8
5
Check the oxygen sensor connectors for bad terminals or poor contact and repair if necessary.
Repair needed?
-
Go to step 12
Go to step 6
6
  1. Let the engine run at idle.
  2. Remove jumper.
  3. Measure the voltage between terminal 4 of the oxygen sensor connector and ground.
Is the oxygen sensor signal level higher than the set value?
0.6 V
Go to step 7
Go to step 11
7
  1. Turn the ignition switch to the LOCK position.
  2. Measure the voltage between the HO2S connector terminal 4 and ground.
Is the oxygen sensor signal level higher than the set value?
0.3V
Go to step 9
Go to step 11
8
Repair the wire or connector between O2 sensor terminal 1 and ECM connector J2 terminal 21 if an open circuit or short to ground is found.
Has the renovation been completed?
-
Go to step 11
Go to step 9
9
Repair the open circuit or short to ground in the wire and connector terminal between the oxygen sensor connector terminal 4 and the ECM connector J2 terminal 11.
Has the renovation been completed?
-
Go to step 12
Go to step 10
10
  1. Turn the ignition switch to the LOCK position.
  2. Replace the ECM.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
11
Replace oxygen sensor.
Has the renovation been completed?
-
Go to step 12
-
12
  1. Clear all DTCs in the ECM.
  2. Perform a diagnostic system check.
Has the renovation been completed?
-
Go to step 13
-
13
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code P0134.




Sensor 1 in the HO2S sensor circuit




Circuit Description


Oxygen sensors with electric heater are used for fuel control and post catalytic converter control. Each HO2S compares the oxygen content of the ambient air with the oxygen content of the exhaust gases. When the engine is first started, the ECM operates in open loop mode, ignoring the HO2S signal level when calculating the air/fuel ratio. The ECM provides the HO2S with a pilot signal level of about 0.45V. The HO2S generates a signal level between 0~1V that fluctuates above and below the bias voltage when operating in closed loop. A high HO2S output indicates a rich fuel mixture. A low HO2S output indicates a lean fuel mixture. Heating elements in the HO2S minimize the time required for the sensors to reach operating temperature and then transmit an accurate voltage signal.

Conditions for Running the DTC


  • Fuel cutoff time is greater than 3.0 seconds.
  • HO2S2 voltage is over 0.2V.
  • Exhaust gas temperature above 600°C.

Conditions for setting the DTC.


  • Sensor voltage from 0.4 V to 0.6 V.
  • The internal resistance of the O2 sensor is greater than 20 KΩ.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


The number below refers to the step numbers from the diagnosis table.
  1. If the voltage changes above and below the set value, the condition is not present.

DTC P0134 - HO2S Sensor 1 Circuit



Step Operation Values Yes No
1
Have you performed a diagnostic system check?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Start the engine.
  2. Warm up the engine to operating temperature.
  3. Let the engine run at 2,000 rpm for 30 seconds.
  4. Use a scan tool to check the voltage parameters of the HO2S 1.
Is the HO2S 1 voltage parameter out of range?
300-600mV
Go to step 3
Go to step 4
3
  1. Examine the failure log data for this DTC.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 4
See Intermittent faults»
4
  1. Switch off the ignition.
  2. Disable the HO2S 1 oxygen sensor.
  3. Switch on the ignition with the engine off.
  4. Use a scan tool to check the voltage parameters of the HO2S 1.
Is the HO2S 1 voltage higher than the set value?
800mV
Go to step 5
Go to step 6
5
Test the HO2S 1 high voltage signal circuit for a short to voltage.
Fault found and corrected?
-
Go to step 17
Go to step 16
6
  1. Connect a 3 amp soft fuse jumper wire between the HO2S 1 high voltage signal circuit harness connector on the engine side harness and the HO2S 1 low voltage signal circuit connector on the engine side harness connector.
  2. Use a scan tool to check the voltage parameters of the HO2S 1.
Are the HO2S 1 voltage parameters within the specified range?
400 - 500 mV
Go to step 8
Go to step 7
7
  1. Remove the jumper installed in the previous step.
  2. Test the HO2S 1 heater low signal control circuit for a short to one of the following circuits:
    • HO2S low signal control circuit 1.
    • HO2S high signal control circuit 1.
Fault found and corrected?
-
Go to step 17
Go to step 13
8
  1. Remove the jumper installed in the previous step.
  2. Connect the HO2S 1 harness connector on the engine side harness to ground with a 3 amp soft fuse jumper wire from the high signal control circuit.
  3. Use a scan tool to check the voltage parameters of the HO2S 1.
Are the HO2S 1 voltage parameters within the specified range?
400 - 500 mV
Go to step 10
Go to step 9
9
  1. Remove the jumper installed in the previous step.
  2. Test the HO2S 1 low control circuit for an open.
Fault found and corrected?
-
Go to step 17
Go to step 14
10
  1. Remove the jumper installed in the previous step.
  2. Measure the voltage between the high signal control circuit connector HO2S 1 on the engine side harness with a digital multimeter and a good ground.
Is the voltage higher than specified?
1B
Go to step 11
Go to step 12
11
Test the HO2S 1 low control signal circuit for a short to voltage.
Fault found and corrected?
-
Go to step 17
Go to step 16
12
Test the HO2S 1 high signal control circuit for an open.
Fault found and corrected?
-
Go to step 17
Go to step 14
13
Check HO2S 1 for intermittent faults and for poor connections.
Fault found and corrected?
-
Go to step 17
Go to step 15
14
Check the ECM for intermittent faults or loose connections.
Fault found and corrected?
-
Go to step 17
Go to step 16
15
Replace HO2S 1 oxygen sensor.
Has the replacement been made?
-
Go to step 17
-
16
Replace the ECM.
Has the replacement been made?
-
Go to step 17
-
17
  1. Clear the DTCs with a scan tool.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 2
Go to step 18
18
Check for additional DTCs set.
Are there any DTCs that have not yet been diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code P0137




Low voltage sensor 2 in the HO2S sensor circuit




Circuit Description


The ECM supplies approximately 0.45 V to terminals 21 and 3 of the ECM J2 connector. oxygen sensor (O2) changes the voltage in the range of about 1V if the exhaust is rich, and reduces it to about 0.1V if the exhaust is lean. The O2 oxygen sensor is like an open circuit and does not supply voltage when the temperature is below 300°C (600°F). O2 sensor open circuit or cold O2 sensor initiate operation "open circuit".

Conditions for Running the DTC


  • HO2S2 oxygen control (in exhaust gases) activated.

Conditions for setting the DTC.


  • HO2S voltage is less than 0.06V.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


  • The normal scan tool signal varies between 0.1 V and 0.9 V in a closed loop.
  • Check oxygen sensor wire (O2). The oxygen sensor may be incorrectly installed and in contact with the exhaust manifold.
  • Check for an intermittent short to ground in the wire between the oxygen sensor and the ECM.
  • Check injector balance to determine if lean mixture is caused by a clogged injector.
  • The vacuum in the crankcase due to its leakage causes the mixture to become lean.
  • A leaky exhaust manifold gasket can cause outside air to be drawn into the exhaust and past the sensor.

DTC P0137 - HO2S Circuit Low Voltage Sensor 2



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Switch on the ignition, do not start the engine.
  2. Install the diagnostic tool.
  3. The engine is at operating temperature.
  4. Set engine speed to 1200 min.
Does the scan tool indicate HO2S voltage within the specified value?
0.07-0.52V
Go to step 4
Go to step 3
3
Does the scan tool indicate HO2S voltage within the specified value?
0.1 V
Go to step 9
Go to «Diagnostic Information»
4
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the HO2S sensor connector and the ECM connector.
  3. Check for a short to ground in the HO2S wire between the HO2S connector terminal 4 and the ECM connector terminal K94.
Fault found?
-
Go to step 5
Go to step 6
5
  1. Repair wire terminal connectors if necessary.
  2. Clear all DTCs from the ECM.
  3. Carry out a test drive.
  4. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
6
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the HO2S sensor connector and the ECM connector.
  3. Check the HO2S wire between HO2S connector terminal 2 and ECM connector J2 terminal 3 for a short to ground.
Fault found?
-
Go to step 7
Go to step 8
7
  1. Repair wire terminal connectors if necessary.
  2. Clear all DTCs from the ECM.
  3. Test the car on the go.
  4. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
8
  1. Turn the ignition switch to the LOCK position.
  2. Replace oxygen sensor.
  3. Carry out a test drive.
  4. Perform a diagnostic system check.
Is the replacement finished?
-
Go to step 10
-
9
  1. Turn the ignition switch to the LOCK position.
  2. Replace the ECM.
  3. Test the car on the go.
  4. Perform a diagnostic system check.
Is the replacement finished?
-
Go to step 10
-
10
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code P0138




Sensor 2 row 1 high voltage HO2S sensor circuit




Circuit Description


The ECM supplies approximately 0.45 V to terminals 21 and 3 of the ECM J2 connector. oxygen sensor (O2) with an electric heater changes the voltage in the range of about 1 V if the exhaust is rich, and reduces it to about 0.1 V if the exhaust is lean. The O2 oxygen sensor with electric heater is like an open circuit and does not supply voltage when the temperature is below 300°C (600°F). O2 sensor open circuit or cold O2 sensor initiate operation "open circuit".

Conditions for Running the DTC


  • HO2S2 oxygen control (in exhaust gases) activated.

Conditions for setting the DTC.


  • HO2S voltage over 1.08V.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


  • The normal scan tool signal varies between 0.1 V and 0.9 V in a closed loop.
  • Check oxygen sensor wire (O2). The oxygen sensor may be incorrectly installed and in contact with the exhaust manifold.
  • Check for an intermittent short to ground in the wire between the oxygen sensor and the ECM.
  • Check injector balance to determine if lean mixture is caused by a clogged injector.
  • The vacuum in the crankcase due to its leakage causes the mixture to become lean.
  • A leaky exhaust manifold gasket can cause outside air to be drawn into the exhaust and past the sensor.

DTC P0138 - HO2S Circuit High Voltage Sensor 2



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Switch on the ignition, do not start the engine.
  2. Install the diagnostic tool.
  3. The engine is at operating temperature.
  4. Depress the accelerator pedal while observing the smoothness of the change in the HO2S voltage.
Does the scan tool indicate the HO2S voltage is higher than the specified value?
4.0 V
Go to step 3
Go to step 6
3
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the oxygen sensor connector and the ECM connector.
  3. Check for a short to battery voltage in the wire between the O2 sensor with electric heater connector terminal 1 and the ECM connector J2 terminal 21.
Fault found?
-
Go to step 4
Go to step 5
4
  1. Repair wire or connector terminal if necessary.
  2. Clear all DTCs from the ECM.
  3. Test the car on the go.
  4. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
5
  1. Turn the ignition switch to the LOCK position.
  2. Replace oxygen sensor.
  3. Test the car on the go.
  4. Perform a diagnostic system check.
Is the replacement finished?
-
Go to step 7
-
6
  1. Turn the ignition switch to the LOCK position.
  2. Replace the ECM.
  3. Test the car on the go.
  4. Perform a diagnostic system check.
Is the replacement finished?
-
Go to step 7
-
7
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code P0140




Sensor 2 in the HO2S sensor circuit




Circuit Description


Oxygen sensors with electric heater are used for fuel control and post catalytic converter control. Each HO2S compares the oxygen content of the ambient air with the oxygen content of the exhaust gases. When the engine is first started, the ECM operates in open loop mode, ignoring the HO2S signal level when calculating the air/fuel ratio. The ECM provides the HO2S with a pilot signal level of about 0.45V. The HO2S generates a signal level between 0~1V that fluctuates above and below the bias voltage when operating in closed loop. A high HO2S output indicates a rich fuel mixture. A low HO2S output indicates a lean fuel mixture. Heating elements in the HO2S minimize the time required for the sensors to reach operating temperature and then transmit an accurate voltage signal.

Conditions for Running the DTC


  • Exhaust gas temperature above 600°C.

Conditions for setting the DTC.


  • Sensor voltage from 0.4 V to 0.52 V.
  • The internal resistance of the O2 sensor is greater than 40 KΩ.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

DTC P0140 - HO2S Sensor 2 Circuit



Step Operation Values Yes No
1
Have you performed a diagnostic system check?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Start the engine.
  2. Warm up the engine to operating temperature.
  3. Let the engine run at 1,500 rpm for 30 seconds.
  4. Observe the HO2S 2 voltage parameter with a scan tool by moving the throttle rapidly from closed to fully open position intermittently (WOT), 3 times.
Has the HO2S 2 voltage changed more than the set value?
200mV
Go to step 3
Go to step 4
3
  1. Examine the failure log data for this DTC.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 4
See Intermittent faults»
4
  1. Switch off the ignition.
  2. Disconnect oxygen sensor with electric heater (HO2S) 2.
  3. Switch on the ignition with the engine off.
  4. Use a scan tool to check the voltage parameters of the HO2S 2.
Is the HO2S 2 voltage less than the specified value?
100mV
Go to step 6
Go to step 5
5
Use a scan tool to check the voltage parameters of the HO2S 2.
Is the HO2S 2 voltage greater than the specified value?
800mV
Go to step 7
Go to step 8
6
Test for a short to ground in the HO2S 2 high signal control circuit.
Fault found and corrected?
-
Go to step 21
Go to step 9
7
Test the HO2S 2 high signal control circuit for a short to voltage.
Fault found and corrected?
-
Go to step 21
Go to step 18
8
Use a digital multimeter to measure the voltage between the HO2S 2 low control circuit harness connector on the engine side harness and a good ground.
Is the voltage higher than specified?
2B
Go to step 10
Go to step 11
9
Test for a short between the HO2S 2 high control circuit and the HO2S 2 low control circuit.
Fault found and corrected?
-
Go to step 17
Go to step 14
10
Test the HO2S 2 low control circuit for a short to voltage.
Fault found and corrected?
-
Go to step 21
Go to step 18
11
  1. Connect the HO2S 2 high control circuit harness connector on the engine harness side to a good ground with a 3-amp, soft-fused jumper wire.
  2. Use a scan tool to check the voltage parameters of the HO2S 2.
Is the HO2S 2 voltage less than the specified value?
100mV
Go to step 12
Go to step 14
12
  1. Remove the jumper installed in the previous step.
  2. Connect a 3 amp soft fuse jumper wire from the HO2S 2 high signal control circuit connector on the engine side harness to the HO2S 2 control circuit low signal connector on the engine side harness.
  3. Use a scan tool to check the voltage parameters of the HO2S 2.
Is the HO2S 2 voltage less than the specified value?
100mV
Go to step 15
Go to step 13
13
Test the HO2S 2 low signal control circuit for an open or high resistance.
Fault found and corrected?
-
Go to step 21
Go to step 18
14
Test the HO2S 2 high signal control circuit for an open or high resistance.
Fault found and corrected?
-
Go to step 21
Go to step 18
15
Test the HO2S 2 heater low control circuit for a short to the HO2S 2 high signal control circuit or the HO2S 2 low signal control circuit.
Fault found and corrected?
-
Go to step 21
Go to step 16
16
  1. The HO2S 2 has detected a rich or lean exhaust gas or the HO2S is dirty. Check the following:
    • The HO2S 2 sensor is contaminated with silicon.
    • Water intrusion into the HO2S 2 sensor connector.
    • Exhaust leak between HO2S 2 and engine.
    • Vacuum leak.
    • The engine oil is contaminated with fuel.
    • Incorrect fuel pressure.
    • One of the fuel injectors has a lean or rich mixture.
  2. If necessary, correct any of the above or similar engine conditions.
Fault found and corrected?
-
Go to step 21
Go to step 17
17
Check the terminals for shorts and the connections to the HO2S 2 are secure.
Fault found and corrected?
-
Go to step 21
Go to step 19
18
Check the contacts for a short circuit and the connections to the ECM.
Fault found and corrected?
-
Go to step 21
Go to step 20
19
Replace HO2S 2 diagnostic oxygen sensor.
Has the replacement been made?
-
Go to step 21
-
20
Replace the ECM.
Has the replacement been made?
-
Go to step 21
-
21
  1. Clear the DTCs with a scan tool.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 2
Go to step 22
22
Check for additional DTCs set.
Are there any DTCs that have not yet been diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic Trouble code P0201




Injector 1 control circuit




Circuit Description


The ECM has four separate injector control circuits, each controlling an injector. The injector turns on when the control circuit is shorted to ground by the ECM. The ECM monitors the current in each control circuit. The ECM measures and controls the voltage drop across the fixed resistor. Each control circuit is monitored to determine the fault. If the voltage on the circuit differs from that set in the ECM, a DTC will set. This DTC detects a short to ground and/or open circuit and a short to battery for the lower injector control circuit terminals.

Conditions for Running the DTC


  • Ignition on.

Conditions for setting the DTC.


  • The ECM has detected an open in the injector 1 control circuit.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An injector 1 control circuit that is open or shorted to ground causes DTC P0201 to set. It also causes a misfire from an inoperative injector. An ignition diagnostic trouble code (DTC) indicating the faulty injector should also be set.
Long-term and short-term fuel trim values that are too high or too low indicate a bad injector. See «Injector balance check» in this section to check for faulty injectors.
The injector resistance measured at the ECM connection is slightly higher when measured directly at the injector because it includes the wire harness resistance. The normal value is about 13.5 ohms

DTC P0201 - Injector 1 Control Circuit



Step Operation Values Yes No
1
Perform a diagnostic system check.
Check done?
-
Go to step 2
Go to item «Diagnostic system check".
2
Does the engine start?
-
Go to step 3
Go to «The crankshaft turns, but the engine does not start»
3
  1. Connect the scan tool to the diagnostic terminal.
  2. Switch on the ignition, do not start the engine.
  3. Using a scan tool, clear the DTCs.
  4. Start the engine and let it idle for one minute.
DTC P0201 reset?
-
Go to step 5
Go to step 4
4
  1. Switch on the ignition, do not start the engine.
  2. View status recording data and write parameters.
  3. Ride according to the condition of the state record buffer as specified.
DTC P0201 reset?
-
Go to step 5
Go to «Diagnostic Information»
5
  1. Switch off the ignition.
  2. Disconnect the ECM connector at injector 1.
  3. Switch on the ignition, do not start the engine.
  4. With a test lamp connected to ground, examine the driver circuit, terminal 26 of the ECM connector J2.
Is the control lamp on?
-
Go to step 7
Go to step 6
6
Eliminate short circuit with "weight" or an open in the injector control circuit.
Has the renovation been completed?
-
Go to step 10
-
7
  1. Disconnect the injector wiring connector 1.
  2. Check the control circuit at terminal 2 with a test lamp connected to ground.
Is the control lamp on?
-
Go to step 8
Go to step 9
8
Repair the short in the injector control circuit.
Has the renovation been completed?
-
Go to step 10
-
9
  1. Switch off the ignition.
  2. Replace the ECM.
Has the renovation been completed?
-
Go to step 10
-
10
  1. Using a scan tool, clear the DTCs.
  2. Start the engine and let it idle at normal operating temperature.
  3. Drive to set DTCs as indicated in the help text.
Does the scan tool report this diagnostic as passed and passed?
-
Go to step 10
Go to step 2
11
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code P0202




Injector 2 control circuit




Circuit Description


The ECM has four separate injector control circuits, each controlling an injector. The injector turns on when the control circuit is shorted to ground by the ECM. The ECM monitors the current in each control circuit. The ECM measures and controls the voltage drop across the fixed resistor. Each control circuit is monitored to determine the fault. If the voltage on the circuit differs from that set in the ECM, a DTC will set. This DTC detects a short to ground and/or open circuit and a short to battery for the lower injector control circuit terminals.

Conditions for Running the DTC


  • Ignition on.

Conditions for setting the DTC.


  • The ECM has detected an open in the injector 2 control circuit.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An open or shorted to ground injector 2 control circuit causes DTC P0202 to set. It also causes a misfire from an inoperative injector. An ignition diagnostic trouble code (DTC) indicating the faulty injector should also be set.
Long-term and short-term fuel trim values that are too high or too low indicate a bad injector. See «Injector balance check» in this section to check for faulty injectors.
The injector resistance measured at the ECM connection is slightly higher when measured directly at the injector because it includes the wire harness resistance. The normal value is about 13.5 ohms

DTC P0202 - Injector 2 Control Circuit



Step Operation Values Yes No
1
Perform a diagnostic system check.
Check done?
-
Go to step 2
Go to item «Diagnostic system check".
2
Does the engine start?
-
Go to step 3
Go to «The crankshaft turns, but the engine does not start»
3
  1. Connect the scan tool to the diagnostic terminal.
  2. Switch on the ignition, do not start the engine.
  3. Using a scan tool, clear the DTCs.
  4. Start the engine and let it idle for one minute.
DTC P0202 reset?
-
Go to step 5
Go to step 4
4
  1. Switch on the ignition, do not start the engine.
  2. View status recording data and write parameters.
  3. Ride according to the condition of the state record buffer as specified.
DTC P0202 reset?
-
Go to step 5
Go to «Diagnostic Information»
5
  1. Switch off the ignition.
  2. Disconnect the ECM connector at injector 2.
  3. Switch on the ignition, do not start the engine.
  4. With a test lamp connected to ground, check the driver circuit, terminal 18 of the ECM connector J2.
Is the control lamp on?
-
Go to step 7
Go to step 6
6
Eliminate short circuit with "weight" or an open in the injector control circuit.
Has the renovation been completed?
-
Go to step 10
 -
7
  1. Disconnect the injector wiring connector 2.
  2. Check the control circuit at terminal 2 with a test lamp connected to ground.
Is the control lamp on?
-
Go to step 8
Go to step 9
8
Repair the short in the injector control circuit.
Has the renovation been completed?
-
Go to step 10
-
9
  1. Switch off the ignition.
  2. Replace the ECM.
Has the renovation been completed?
-
Go to step 10
-
10
  1. Using a scan tool, clear the DTCs.
  2. Start the engine and let it idle at normal operating temperature.
  3. Drive to set DTCs as indicated in the help text.
Does the scan tool report this diagnostic as passed and passed?
-
Go to step 10
Go to step 2
11
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code P0203




Injector 3 control circuit




Circuit Description


The ECM has four separate injector control circuits, each controlling an injector. The injector turns on when the control circuit is shorted to ground by the ECM. The ECM monitors the current in each control circuit. The ECM measures and controls the voltage drop across the fixed resistor. Each control circuit is monitored to determine the fault. If the voltage on the circuit differs from that set in the ECM, a DTC will set. This DTC detects a short to ground and/or open circuit and a short to battery for the lower injector control circuit terminals.

Conditions for Running the DTC


  • Ignition on.

Conditions for setting the DTC.


  • The ECM has detected an open in the injector 3 control circuit.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An open or shorted to ground injector 3 control circuit causes DTC P0203 to set. It also causes a misfire from an inoperative injector. An ignition diagnostic trouble code (DTC) indicating the faulty injector should also be set.
Long-term and short-term fuel trim values that are too high or too low indicate a bad injector. See «Injector balance check» in this section to check for faulty injectors.
The injector resistance measured at the ECM connection is slightly higher when measured directly at the injector because it includes the wire harness resistance. The normal value is about 13.5 ohms.

DTC P0203 - Injector 3 Control Circuit



Step Operation Values Yes No
1
Perform a diagnostic system check.
Check done?
-
Go to step 2
Go to item «Diagnostic system check".
2
Does the engine start?
-
Go to step 3
Go to «The crankshaft turns, but the engine does not start»
3
  1. Connect the scan tool to the diagnostic terminal.
  2. Switch on the ignition, do not start the engine.
  3. Using a scan tool, clear the DTCs.
  4. Start the engine and let it idle for one minute.
DTC P0203 reset?
-
Go to step 5
Go to step 4
4
  1. Switch on the ignition, do not start the engine.
  2. View status recording data and write parameters.
  3. Ride according to the condition of the state record buffer as specified.
DTC P0203 reset?
-
Go to step 5
Go to «Diagnostic Information»
5
  1. Switch off the ignition.
  2. Disconnect the ECM connector at injector 3.
  3. Switch on the ignition, do not start the engine.
  4. With a test lamp connected to ground, examine the driver circuit, terminal 10 of the ECM connector J2.
Is the control lamp on?
-
Go to step 7
Go to step 6
6
Eliminate short circuit with "weight" or an open in the injector control circuit.
Has the renovation been completed?
-
Go to step 10
-
7
  1. Disconnect the injector wiring connector 3.
  2. Check the control circuit at terminal 2 with a test lamp connected to ground.
Is the control lamp on?
-
Go to step 8
Go to step 9
8
Repair the short in the injector control circuit.
Has the renovation been completed?
-
Go to step 10
-
9
  1. Switch off the ignition.
  2. Replace the ECM.
Has the renovation been completed?
-
Go to step 10
-
10
  1. Using a scan tool, clear the DTCs.
  2. Start the engine and let it idle at normal operating temperature.
  3. Drive to set DTCs as indicated in the help text.
Does the scan tool report this diagnostic as passed and passed?
-
Go to step 10
Go to step 2
11
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic Trouble code P0204




Injector 4 control circuit




Circuit Description


The ECM has four separate injector control circuits, each controlling an injector. The injector turns on when the control circuit is shorted to ground by the ECM. The ECM monitors the current in each control circuit. The ECM measures and controls the voltage drop across the fixed resistor. Each control circuit is monitored to determine the fault. If the voltage on the circuit differs from that set in the ECM, a DTC will set. This DTC detects a short to ground and/or open circuit and a short to battery for the lower injector control circuit terminals.

Conditions for Running the DTC


  • Ignition on.

Conditions for setting the DTC.


  • The ECM has detected an open in the injector 4 control circuit.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An open or shorted to ground injector 4 control circuit causes DTC P0204 to set. It also causes a misfire from an inoperative injector. An ignition diagnostic trouble code (DTC) indicating the faulty injector should also be set.
Long-term and short-term fuel trim values that are too high or too low indicate a bad injector. See «Injector balance check» in this section to check for faulty injectors.
The injector resistance measured at the ECM connection is slightly higher when measured directly at the injector because it includes the wire harness resistance. The normal value is about 13.5 ohms.

DTC P0204 - Injector 4 Control Circuit



Step Operation Values Yes No
1
Perform a diagnostic system check.
Check done?
-
Go to step 2
Go to item «Diagnostic system check".
2
Does the engine start?
-
Go to step 3
Go to «The crankshaft turns, but the engine does not start»
3
  1. Connect the scan tool to the diagnostic terminal.
  2. Switch on the ignition, do not start the engine.
  3. Using a scan tool, clear the DTCs.
  4. Start the engine and let it idle for one minute.
DTC P0204 reset?
-
Go to step 5
Go to step 4
4
  1. Switch on the ignition, do not start the engine.
  2. View status recording data and write parameters.
  3. Ride according to the condition of the state record buffer as specified.
DTC P0204 reset?
-
Go to step 5
Go to «Diagnostic Information»
5
  1. Switch off the ignition.
  2. Disconnect the ECM connector at injector 4.
  3. Switch on the ignition, do not start the engine.
  4. With a test lamp connected to ground, examine the driver circuit, terminal 2 of the ECM connector J2.
Is the control lamp on?
-
Go to step 7
Go to step 6
6
Eliminate short circuit with "weight" or an open in the injector control circuit.
Has the renovation been completed?
-
Go to step 10
-
7
  1. Disconnect the injector wiring connector 4.
  2. Check the control circuit at terminal 2 with a test lamp connected to ground.
Is the control lamp on?
-
Go to step 8
Go to step 9
8
Repair the short in the injector control circuit.
Has the renovation been completed?
-
Go to step 10
-
9
  1. Switch off the ignition.
  2. Replace the ECM.
Has the renovation been completed?
-
Go to step 10
-
10
  1. Using a scan tool, clear the DTCs.
  2. Start the engine and let it idle at normal operating temperature.
  3. Drive to set DTCs as indicated in the help text.
Does the scan tool report this diagnostic as passed and passed?
-
Go to step 10
Go to step 2
11
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code (DTC) P0221




Throttle position sensor 2 performance (TP)




Circuit Description


Throttle body assembly contains 2 throttle position sensors (TP). Throttle Position Sensors (TP) mounted on the throttle body assembly and are maintenance free. Throttle Position Sensors (TP) provide a voltage that varies with throttle angle. The ECM powers the throttle position sensors (TP) common 5V control circuit, common low voltage control circuit and 2 independent signal circuits.
Throttle Position Sensors (TP) have the opposite functionality. Throttle position sensor TP 1 increases signal voltage from 1 volt at idle to 4 volts at wide open throttle (WOT). Throttle position sensor TP 2 reduces the signal voltage from 4 volts at idle to 1 volt at wide open throttle.

Conditions for Running the DTC


  • Ignition on.
  • The difference between TP1 and TP2 sensor values is more than 6.3%.

Conditions for setting the DTC.


  • Throttle Position Sensor Actual Value (TP) over 9.0.

Action Taken When the DTC Sets


  • Malfunction indicator lamp (MIL) lights up immediately after a malfunction occurs.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


If DTC P0221 cannot be reproduced, fault status log information may be helpful. Use the DTC information data from the scan tool to determine the status of the DTC.

DTC P0221 - Throttle Position Sensor 2 Performance (TP)



Step Operation Values Yes No
1
Have you performed a diagnostic system check?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Start the engine.
  2. Perform the following checks:
    • Quickly depress the accelerator pedal from the starting position to the wide open throttle position (WOT) and release the pedal. Repeat the procedure several times.
    • Slowly depress the accelerator pedal until the throttle is fully open and then slowly return the pedal to the closed throttle position. Repeat the procedure several times.
  1. Check throttle position sensor 1 and 2 parameters (TR) scanning device.
Agree is displayed on the scan tool (Agree)?
-
Go to step 3
Go to step 5
3
  1. Turn off the engine.
  2. Switch on the ignition with the engine off.
  3. Observe the throttle position sensor 2 voltage parameters with a scan tool.
Is the voltage within the specified range?
4.7-4.1B
Go to step 4
Go to step 5
4
  1. Examine the failure log data for this DTC.
  2. Switch off the ignition for 30 seconds
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 5
Go to «Diagnostic Information»
5
  1. Switch off the ignition.
  2. Disconnect the throttle body harness connector.
  3. Switch on the ignition with the engine off.
  4. Connect a test light between the 5V throttle position sensor control circuit (TP) and the ECM housing.
  5. Connect the digital multimeter to the test lamp probe and the ECM housing.
Is the voltage higher than specified?
4.8V
Go to step 6
Go to step 11
6
  1. Connect a 3-amp, soft-fused jumper wire between the 5-volt control circuit and the signal 2 circuit of the throttle position sensor.
  2. Observe the throttle position sensor 2 voltage parameters with a scan tool.
Is the voltage higher than specified?
4.8V
Go to step 7
Go to step 9
7
  1. Connect a 3-amp soft-fused jumper wire between the 5-volt control circuit and the signal 1 circuit of the throttle position sensor.
  2. Verify the throttle position sensor 1 voltage parameters with a scan tool.
Is the voltage higher than specified?
4.8V
Go to step 8
Go to step 10
8
  1. Switch off the ignition.
  2. Remove the ECM/TCM fuse from the fuse box in the engine compartment.
  3. Measure the resistance from the throttle position sensor low voltage control circuit to the ECM housing with a digital multimeter.
Is the resistance below the specified value?
5 ohm
Go to step 13
Go to step 12
9
Test the throttle position sensor 2 signal circuit for a high resistance or an open.
Fault found and corrected?
-
Go to step 17
Go to step 14
10
Test the throttle position sensor signal 1 circuit for a high resistance or an open.
Fault found and corrected?
-
Go to step 17
Go to step 14
11
Test the 5V throttle position sensor control circuit for a high resistance or an open.
Fault found and corrected?
-
Go to step 17
Go to step 14
12
Check low voltage throttle position sensor control circuit (TP) high resistance or open circuit.
Fault found and corrected?
-
Go to step 17
Go to step 14
13
Check for intermittent problems and a loose connection at the throttle body harness connector.
Fault found and corrected?
-
Go to step 17
Go to step 15
14
Check the ECM for intermittent faults or loose connections.
Fault found and corrected?
-
Go to step 17
Go to step 16
15
Replace throttle body assembly.
Has the replacement been made?
-
Go to step 17
-
16
Replace the ECM.
Has the replacement been made?
-
Go to step 17
-
17
  1. Clear the DTCs with a scan tool.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 2
Go to step 18
18
Check for additional DTCs set.
Are there any DTCs that have not yet been diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code P0222




Throttle position sensor 2 circuit (TP), low voltage




Circuit Description


Throttle body assembly contains 2 throttle position sensors (TP). Throttle Position Sensors (TP) mounted on the throttle body assembly and are maintenance free. Throttle Position Sensors (TP) provide a voltage that varies with throttle angle. The ECM powers the throttle position sensors (TP) common 5V control circuit, common low voltage control circuit and 2 independent signal circuits.
Throttle Position Sensors (TP) have the opposite functionality. Throttle position sensor TP 1 increases signal voltage from 1 volt at idle to 4 volts at wide open throttle (WOT). Throttle position sensor TP 2 reduces the signal voltage from 4 volts at idle to 1 volt at wide open throttle.

Conditions for Running the DTC


  • The engine speed is greater than 1200 rpm.

Conditions for setting the DTC.


  • Throttle position sensor voltage is less than 0.156V.

Action Taken When the DTC Sets


  • Malfunction indicator lamp (MIL) lights up immediately after a malfunction occurs.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An intermittent fault can be caused by a loose connection, frayed insulation, or a broken wire under the insulation.
Any circuit suspected of creating an intermittent fault should be carefully checked for the following conditions.
  • Removed terminals
  • Terminal connection
  • Locks malfunction
  • Terminal damage
  • Weak connection of terminals with wires
  • Physical damage to wiring harnesses

DTC P0222 - Throttle Position Sensor 2 Circuit Low Voltage



Step Operation Values Yes No
1
Have you performed a diagnostic system check?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Switch on the ignition with the engine off.
  2. Observe the throttle position sensor 2 voltage parameters with a scan tool.
Is the voltage less than the specified value?
0.16V
Go to step 4
Go to step 3
3
  1. Examine the failure log data for this DTC.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 4
Go to «Diagnostic Information»
4
Check the DTC data with a scan tool.
Is DTC P0122 also set?
-
Go to step 5
Go to step 6
5
  • Switch off the ignition.
  • Disconnect the throttle body harness connector.
  • Switch on the ignition with the engine off.
  • Set up a digital multimeter to test the current on the 400 mA scale.
  • Measure the current between the 5 volt throttle position sensor control circuit (TP) and the ECM housing.
Is the current higher than the set value?
50mA
Go to step 9
Go to step 7
6
  1. Switch off the ignition.
  2. Disconnect the throttle body harness connector.
  3. Switch on the ignition with the engine off.
  4. Connect a 3 amp soft-fused jumper wire between the 5 volt TP sensor control circuit and the TP sensor signal 2 circuit (TP).
  5. Observe the throttle position sensor 2 voltage parameters with a scan tool.
Is the voltage within the specified range?
4.8-5.2V
Go to step 9
Go to step 8
7
Test the 5V Throttle Position Sensor Control Circuit (TP) and all common 5V control circuits as follows:
  • cliff
  • Short circuit to ground
  • high resistance
Fault found and corrected?
-
Go to step 13
Go to step 10
8
Test the throttle position sensor 2 signal circuit for the following conditions:
  • cliff
  • Short circuit to ground
  • high resistance
Fault found and corrected?
-
Go to step 13
Go to step 10
9
Check for intermittent irregularities and poor connection of the throttle body assembly.
Fault found and corrected?
-
Go to step 13
Go to step 11
10
Check the ECM for intermittent faults or loose connections.
Fault found and corrected?
-
Go to step 13
Go to step 12
11
Replace throttle body assembly.
Has the replacement been made?
-
Go to step 13
-
12
Replace the ECM.
Has the replacement been made?
-
Go to step 13
-
13
  1. Clear the DTCs with a scan tool.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 2
Go to step 14
14
Check for additional DTCs set.
Are there any DTCs that have not yet been diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code P0223




Throttle position sensor 2 circuit (TP), high voltage




Circuit Description


Throttle body assembly contains 2 throttle position sensors (TP). Throttle Position Sensors (TP) mounted on the throttle body assembly and are maintenance free. Throttle Position Sensors (TP) provide a voltage that varies with throttle angle. The ECM powers the throttle position sensors (TP) common 5V control circuit, common low voltage control circuit and 2 independent signal circuits.
Throttle Position Sensors (TP) have the opposite functionality. Throttle position sensor TP 1 increases signal voltage from 1 volt at idle to 4 volts at wide open throttle (WOT). Throttle position sensor TP 2 reduces the signal voltage from 4 volts at idle to 1 volt at wide open throttle.

Conditions for Running the DTC


  • Ignition on.

Conditions for setting the DTC.


  • The throttle position sensor signal level is greater than 4.883 V.

Action Taken When the DTC Sets


  • Malfunction indicator lamp (MIL) lights up immediately after a malfunction occurs.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An intermittent fault can be caused by a loose connection, frayed insulation, or a broken wire under the insulation.
Any circuit suspected of creating an intermittent fault should be carefully checked for the following conditions.
  • Removed terminals
  • Terminal connection
  • Locks malfunction
  • Terminal damage
  • Weak connection of terminals with wires
  • Physical damage to wiring harnesses

DTC P0223 - Throttle Position Sensor 2 Circuit High Voltage



Step Operation Values Yes No
1
Have you performed a diagnostic system check?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Switch on the ignition with the engine off.
  2. Observe the throttle position sensor 2 voltage parameters with a scan tool.
Is the voltage higher than specified?
4.8V
Go to step 4
Go to step 3
3
  1. Examine the failure log data for this DTC.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 4
Go to «Diagnostic Information»
4
  • Switch off the ignition.
  • Disconnect the throttle body harness connector.
  • Switch on the ignition with the engine off.
  • Observe the throttle position sensor 2 voltage parameters with a scan tool.
Is the voltage less than the specified value?
0.1 V
Go to step 5
Go to step 8
5
Measure the voltage between the 5 volt throttle position sensor control circuit (TP) and the ECM housing with a digital multimeter.
Is the voltage higher than specified?
5.2V
Go to step 9
Go to step 6
6
  1. Switch off the ignition.
  2. Remove the ECM/TCM fuse from the fuse box in the engine compartment.
  3. Measure the resistance from the throttle position sensor low voltage control circuit to the ECM housing with a digital multimeter.
Is the resistance below the specified value?
5 ohm
Go to step 11
Go to step 7
7
  1. Install the ECM/TCM fuse.
  2. Switch on the ignition with the engine off.
  3. Measure the voltage between the throttle position sensor low voltage control circuit and the ECM housing with a digital multimeter.
Is the voltage less than the specified value?
1B
Go to step 13
Go to step 10
8
Test the throttle position sensor 2 signal circuit for a short to voltage.
Fault found and corrected?
-
Go to step 16
Go to step 12
9
Test the 5V Throttle Position Sensor Control Circuit (TP) and all common 5V control circuits for a short to voltage.
Fault found and corrected?
-
Go to step 16
Go to step 12
10
  1. Switch off the ignition.
  2. Disconnect the ECM
  3. Test the throttle position sensor low voltage control circuit for an open or high resistance.
Fault found and corrected?
-
Go to step 16
Go to step 12
11
Check for a shorted terminal and a secure connection at the throttle body assembly.
Fault found and corrected?
-
Go to step 16
Go to step 14
12
Check the contacts for a short circuit and the connections to the ECM.
Fault found and corrected?
-
Go to step 16
Go to step 15
13
Repair the breakdown voltage in the throttle position sensor low voltage control circuit.
Repair completed?
-
Go to step 16
-
14
Replace throttle body assembly.
Has the replacement been made?
-
Go to step 16
-
15
Replace the ECM.
Has the replacement been made?
-
Go to step 16
-
16
  1. Clear the DTCs with a scan tool.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 2
Go to step 17
17
Check for additional DTCs set.
Are there any DTCs that have not yet been diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code P0261




Injector 1 control circuit low voltage




Circuit Description


The ECM has six separate injector control circuits, each controlling an injector. The injector turns on when the control circuit is shorted to ground by the ECM. The ECM monitors the current in each control circuit. The ECM measures and controls the voltage drop across the fixed resistor. Each control circuit is monitored to determine the fault. If the voltage on the circuit differs from that set in the ECM, a DTC will set. This DTC indicates low voltage and/or an open circuit.

Conditions for Running the DTC


  • Ignition on.

Conditions for setting the DTC.


  • The ECM has detected a low voltage in the 1st injector control circuit.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An injector control circuit that is open or shorted to ground causes DTC P0261 to set. It also causes a misfire from an inoperative injector. An ignition diagnostic trouble code (DTC) indicating the faulty injector should also be set.
Long-term and short-term fuel trim values that are too high or too low indicate a bad injector. See «Injector balance check» in this section to check for faulty injectors.

DTC P0261 - 1st Injector Control Circuit Low Voltage



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the injector connector.
  3. Disconnect the ECM connector.
  4. Test for an open or short to ground in the wire between injector 1 connector terminal 2 and ECM connector J2 terminal 26.
Fault found?
-
Go to step 3
Go to step 4
3
  1. Repair the wire or connector terminal between the 1st injector connector terminal 2 and the ECM connector J2 terminal 26.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
4
  1. Turn the ignition switch to the LOCK position.
  2. Test for an open or short to ground in the wire between the 1st injector connector terminal 1 and the main relay terminal 87.
Fault found?
-
Go to step 5
Go to step 6
5
  1. Repair the wire or connector terminal between 1st injector connector terminal 1 and main relay terminal 87.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
6
  1. Replace nozzle 1.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
Go to step 7
7
  1. Turn the ignition switch to the LOCK position.
  2. Replace the ECM.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-

Diagnostic trouble code P0262




Injector 1 control circuit high voltage




Circuit Description


The ECM has six separate injector control circuits, each controlling an injector. The injector turns on when the control circuit is shorted to ground by the ECM. The ECM monitors the current in each control circuit. The ECM measures and controls the voltage drop across the fixed resistor. Each control circuit is monitored to determine the fault. If the voltage on the circuit differs from that set in the ECM, a DTC will set. This DTC indicates high voltage and/or a short to battery voltage.

Conditions for Running the DTC


  • Ignition on.

Conditions for setting the DTC.


  • The ECM has detected a high voltage on the injector 1 control circuit.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An injector control circuit that is open or shorted to ground causes DTC P0262 to set. It also causes a misfire from an inoperative injector. An ignition diagnostic trouble code (DTC) indicating the faulty injector should also be set.
Long-term and short-term fuel trim values that are too high or too low indicate a bad injector. See «Injector balance check» in this section to check for faulty injectors.

DTC P0262 - Injector 1 Control Circuit High Voltage



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the injector connector.
  3. Disconnect the ECM connector.
  4. Check for a short to battery in the wire between injector 1 connector terminal 2 and ECM connector J2 terminal 26.
Fault found?
-
Go to step 3
Go to step 4
3
  1. Repair the wire or connector terminal between the 1st injector connector terminal 2 and the ECM connector J2 terminal 26.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
4
  1. Turn the ignition switch to the LOCK position.
  2. Check for a short to battery in the wire between the 1st injector connector terminal 1 and the main relay connector terminal 87.
Fault found?
-
Go to step 5
Go to step 6
5
  1. Repair the wire or connector terminal between 1st injector connector terminal 1 and main relay terminal 87.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
6
  1. Replace nozzle 1.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
Go to step 7
7
  1. Turn the ignition switch to the LOCK position.
  2. Replace the ECM.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-

Diagnostic Trouble code P0264




Injector 2 control circuit low voltage




Circuit Description


The ECM has six separate injector control circuits, each controlling an injector. The injector turns on when the control circuit is shorted to ground by the ECM. The ECM monitors the current in each control circuit. The ECM measures and controls the voltage drop across the fixed resistor. Each control circuit is monitored to determine the fault. If the voltage on the circuit differs from that set in the ECM, a DTC will set. This DTC indicates low voltage and/or an open circuit.

Conditions for Running the DTC


  • Ignition on.

Conditions for setting the DTC.


  • The ECM has detected a low voltage in the injector 2 control circuit.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An injector control circuit that is open or shorted to ground causes DTC P0264 to set. It also causes a misfire from an inoperative injector. An ignition diagnostic trouble code (DTC) indicating the faulty injector should also be set.
Long-term and short-term fuel trim values that are too high or too low indicate a bad injector. See «Injector balance check» in this section to check for faulty injectors.

DTC P0264 - Injector 2 Control Circuit Low Voltage



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the injector connector.
  3. Disconnect the ECM connector.
  4. Test for an open or short to ground in the wire between the 2nd injector connector terminal 2 and the ECM connector J2 terminal 18.
Fault found?
-
Go to step 3
Go to step 4
3
  1. Repair the wire or connector terminal between the 2nd injector connector terminal 2 and the ECM connector J2 terminal 18.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
4
  1. Turn the ignition switch to the LOCK position.
  2. Test for an open or short to ground in the wire between the 2nd injector connector terminal 1 and the main relay terminal 87.
Fault found?
-
Go to step 5
Go to step 6
5
  1. Repair the wire or connector terminal between 2nd injector connector terminal 1 and main relay terminal 87.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
6
  1. Replace nozzle 2.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
Go to step 7
7
  1. Turn the ignition switch to the LOCK position.
  2. Replace the ECM.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-

Diagnostic Trouble code P0265




Injector 2 control circuit high voltage




Circuit Description


The ECM has six separate injector control circuits, each controlling an injector. The injector turns on when the control circuit is shorted to ground by the ECM. The ECM monitors the current in each control circuit. The ECM measures and controls the voltage drop across the fixed resistor. Each control circuit is monitored to determine the fault. If the voltage on the circuit differs from that set in the ECM, a DTC will set. This DTC indicates high voltage and/or a short to battery voltage.

Conditions for Running the DTC


  • Ignition on.

Conditions for setting the DTC.


  • The ECM has detected a high voltage in the injector 2 control circuit.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An injector control circuit that is open or shorted to ground causes DTC P0265 to set. It also causes a misfire from an inoperative injector. An ignition diagnostic trouble code (DTC) indicating the faulty injector should also be set.
Long-term and short-term fuel trim values that are too high or too low indicate a bad injector. See «Injector balance check» in this section to check for faulty injectors.

DTC P0265 - Injector 2 Control Circuit High Voltage



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the injector connector.
  3. Disconnect the ECM connector.
  4. Check for a short to battery in the wire between the 2nd injector connector terminal 2 and the ECM connector J2 terminal 18.
Fault found?
-
Go to step 3
Go to step 4
3
  1. Repair the wire or connector terminal between the 2nd injector connector terminal 2 and the ECM connector J2 terminal 18.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
4
  1. Turn the ignition switch to the LOCK position.
  2. Check wire between 2nd injector connector terminal 1 and main relay terminal 87 for a short to battery.
Fault found?
-
Go to step 5
Go to step 6
5
  1. Repair the wire or connector terminal between 2nd injector connector terminal 1 and main relay terminal 87.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
6
  1. Replace nozzle 2.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
Go to step 7
7
  1. Turn the ignition switch to the LOCK position.
  2. Replace the ECM.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-

Diagnostic trouble code P0267




Injector 3 control circuit low voltage




Circuit Description


The ECM has six separate injector control circuits, each controlling an injector. The injector turns on when the control circuit is shorted to ground by the ECM. The ECM monitors the current in each control circuit. The ECM measures and controls the voltage drop across the fixed resistor. Each control circuit is monitored to determine the fault. If the voltage on the circuit differs from that set in the ECM, a DTC will set. This DTC indicates low voltage and/or an open circuit.

Conditions for Running the DTC


  • Ignition on.

Conditions for setting the DTC.


  • The ECM has detected a low voltage in the injector 3 control circuit.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An injector control circuit that is open or shorted to ground causes DTC P0267 to set. It also causes a misfire from an inoperative injector. An ignition diagnostic trouble code (DTC) indicating the faulty injector should also be set.
Long-term and short-term fuel trim values that are too high or too low indicate a bad injector. See «Injector balance check» in this section to check for faulty injectors.

DTC P0267 - Injector 3 Control Circuit Low Voltage



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the injector connector.
  3. Disconnect the ECM connector.
  4. Test for an open or short to ground in the wire between the 3rd injector connector terminal 2 and the ECM connector J2 terminal 10.
Fault found?
-
Go to step 3
Go to step 4
3
  1. Repair the wire or connector terminal between the 3rd injector connector terminal 2 and the ECM connector J2 terminal 10.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
4
  1. Turn the ignition switch to the LOCK position.
  2. Test for an open or short to ground in the wire between the 3rd injector connector terminal 1 and the main relay terminal 87.
Fault found?
-
Go to step 5
Go to step 6
5
  1. Repair the wire or connector terminal between 3rd injector connector terminal 1 and main relay terminal 87.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
6
  1. Replace nozzle 3.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
Go to step 7
7
  1. Turn the ignition switch to the LOCK position.
  2. Replace the ECM.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-

Diagnostic trouble code P0268




Injector 3 control circuit high voltage




Circuit Description


The ECM has six separate injector control circuits, each controlling an injector. The injector turns on when the control circuit is shorted to ground by the ECM. The ECM monitors the current in each control circuit. The ECM measures and controls the voltage drop across the fixed resistor. Each control circuit is monitored to determine the fault. If the voltage on the circuit differs from that set in the ECM, a DTC will set. This DTC indicates high voltage and/or a short to battery voltage.

Conditions for Running the DTC


  • Ignition on.

Conditions for setting the DTC.


  • The ECM has detected a high voltage in the injector 3 control circuit.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An injector control circuit that is open or shorted to ground causes DTC P0268 to set. It also causes a misfire from an inoperative injector. An ignition diagnostic trouble code (DTC) indicating the faulty injector should also be set.
Long-term and short-term fuel trim values that are too high or too low indicate a bad injector. See «Injector balance check» in this section to check for faulty injectors.

DTC P0268 - Injector 3 Control Circuit High Voltage



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the injector connector.
  3. Disconnect the ECM connector.
  4. Check for a short to battery in the wire between the 3rd injector connector terminal 2 and the ECM connector J2 terminal 10.
Fault found?
-
Go to step 3
Go to step 4
3
  1. Repair the wire or connector terminal between the 3rd injector connector terminal 2 and the ECM connector J2 terminal 10.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
4
  1. Turn the ignition switch to the LOCK position.
  2. Check wire between 3rd injector connector terminal 1 and main relay terminal 87 for a short to battery.
Fault found?
-
Go to step 5
Go to step 6
5
  1. Repair the wire or connector terminal between 3rd injector connector terminal 1 and main relay terminal 87.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
6
  1. Replace nozzle 3.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
Go to step 7
7
  1. Turn the ignition switch to the LOCK position.
  2. Replace the ECM.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-

Diagnostic Trouble code P0270




Injector 4 control circuit low voltage




Circuit Description


The ECM has six separate injector control circuits, each controlling an injector. The injector turns on when the control circuit is shorted to ground by the ECM. The ECM monitors the current in each control circuit. The ECM measures and controls the voltage drop across the fixed resistor. Each control circuit is monitored to determine the fault. If the voltage on the circuit differs from that set in the ECM, a DTC will set. This DTC indicates low voltage and/or an open circuit.

Conditions for Running the DTC


  • Ignition on.

Conditions for setting the DTC.


  • The ECM has detected a low voltage on the injector 4 control circuit.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An injector control circuit that is open or shorted to ground causes DTC P0270 to set. It also causes a misfire from an inoperative injector. An ignition diagnostic trouble code (DTC) indicating the faulty injector should also be set.
Long-term and short-term fuel trim values that are too high or too low indicate a bad injector. See «Injector balance check» in this section to check for faulty injectors.

DTC P0270 - Injector 4 Control Circuit Low Voltage



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the injector connector.
  3. Disconnect the ECM connector.
  4. Test for an open or short to ground in the wire between the 4th injector connector terminal 2 and the ECM connector J2 terminal 2.
Fault found?
-
Go to step 3
Go to step 4
3
  1. Repair the wire or connector terminal between the 4th injector connector terminal 2 and the ECM connector J2 terminal 2.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
4
  1. Turn the ignition switch to the LOCK position.
  2. Test for an open or short to ground in the wire between the 4th injector connector terminal 1 and the main relay terminal 87.
Fault found?
-
Go to step 5
Go to step 6
5
  1. Repair the wire or connector terminal between the 4th injector connector terminal 1 and main relay terminal 87.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
6
  1. Replace nozzle 4.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
Go to step 7
7
  1. Turn the ignition switch to the LOCK position.
  2. Replace the ECM.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-

Diagnostic trouble code P0271




Injector 4 control circuit high voltage




Circuit Description


The ECM has six separate injector control circuits, each controlling an injector. The injector turns on when the control circuit is shorted to ground by the ECM. The ECM monitors the current in each control circuit. The ECM measures and controls the voltage drop across the fixed resistor. Each control circuit is monitored to determine the fault. If the voltage on the circuit differs from that set in the ECM, a DTC will set. This DTC indicates high voltage and/or a short to battery voltage.

Conditions for Running the DTC


  • Ignition on.

Conditions for setting the DTC.


  • The ECM has detected a high voltage on the injector 4 control circuit.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An injector control circuit that is open or shorted to ground causes DTC P0271 to set. It also causes a misfire from an inoperative injector. An ignition diagnostic trouble code (DTC) indicating the faulty injector should also be set.
Long-term and short-term fuel trim values that are too high or too low indicate a bad injector. See «Injector balance check» in this section to check for faulty injectors.

DTC P0271 - Injector 4 Control Circuit High Voltage



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the injector connector.
  3. Disconnect the ECM connector.
  4. Check for a short to battery in the wire between the 4th injector connector terminal 2 and the ECM connector J2 terminal 0.
Fault found?
-
Go to step 3
Go to step 4
3
  1. Repair the wire or connector terminal between the 4th injector connector terminal 2 and the ECM connector J2 terminal 2.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
4
  1. Turn the ignition switch to the LOCK position.
  2. Check wire between 4th injector connector terminal 1 and main relay terminal 87 for a short to battery.
Fault found?
-
Go to step 5
Go to step 6
5
  1. Repair the wire or connector terminal between the 4th injector connector terminal 1 and main relay terminal 87.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
6
  1. Replace nozzle 4.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
Go to step 7
7
  1. Turn the ignition switch to the LOCK position.
  2. Replace the ECM.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-

Diagnostic Trouble code P0300




Misfire detected




System description


Electronic engine management controller (ECM) monitors crankshaft and camshaft positions to detect misfiring. The ECM monitors for a rapid drop in crankshaft speed. This check is made in blocks of 100 engine revolutions. Several tests may be required to store the DTC and also to illuminate the MIL. Under minor misfire conditions, it may also take more than one stroke for the DTC to set. In the event of a significant misfire, the MIL will flash to indicate that catalytic converter damage is possible.

Conditions for Running the DTC


  • The number of engine revolutions in the range from 0 to 4500 rpm.
  • The load on the motor is greater than zero torque.
  • Engine load change is less than maximum.
  • The change in engine speed is less than the maximum.
  • The intake air temperature is above -30°C.

Conditions for setting the DTC.


  • Emissions compliance misfire rate is greater than 4%.
  • The percentage of misfires for catalytic converter damage is greater than 1%.

Action Taken When the DTC Sets


  • Malfunction indicator lamp (MIL) lights up immediately after a malfunction occurs.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An intermittent fault may be due to a defective encoder wheel. Remove the crankshaft position sensor and check the encoder wheel through the sensor mounting hole. Check the porosity and condition of the wheel. If the DTC is intermittent, refer to «Diagnostics of symptoms» in this section.

DTC P0300 - Misfire Detected



Step Operation Values Yes No
1
Perform a diagnostic system check.
Check done?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Carry out a visual/physical check.
  2. Make necessary repairs.
Has the renovation been completed?
-
Go to step 26
Go to step 3
3
Start the engine and let it idle.
Is the number of misfires present increasing?
-
Go to step 4
Go to step 5
4
All counters are the same (within a percentage of each other?)
-
Go to step 6
Go to step 10
5
  1. Switch on the ignition, do not start the engine.
  2. View status recording data and write parameters.
  3. Drive under the conditions of the recorded conditions and the conditions for setting the DTC.
Increasing misfire count?
-
Go to step 4
Go to «Diagnostic Information»
6
  1. Stop engine.
  2. Install a pressure gauge on the fuel rail.
  3. Pay attention to the pressure with the engine running.
Is the fuel pressure within the specified value?
410 kPa
Go to step 7
Go to section «Fuel system diagnostics»
7
Check fuel for contamination.
Is the fuel correct?
-
Go to step 8
Go to step 9
8
Check engine for common problems and repair if necessary.
Has the renovation been completed?
-
Go to step 26
-
9
Replace contaminated fuel.
Has the renovation been completed?
-
Go to step 26
-
10
  1. Stop engine.
  2. Disconnect the fuel injector harness connector.
  3. Turn the engine crankshaft and check for spark.
Is there spark at all four spark plugs?
-
Go to step 11
Go to step 19
11
Replace faulty spark plugs if necessary.
Has the renovation been completed?
-
Go to step 26
Go to step 12
12
  1. Stop engine.
  2. Disconnect the fuel injector harness connectors from the injectors.
  3. Install a warning light at the misfire cylinder injector harness connector.
  4. Turn the engine crankshaft and check the warning light.
Is the control lamp flashing?
-
Go to step 13
Go to step 14
13
Check injector balance.
Are the fuel injectors ok?
-
Go to step 8
Go to step 15
14
  1. Disconnect the signal lamp for checking the injectors.
  2. With a test light connected to ground, test the ignition circuit terminal 1 of the fuel injector harness connector for the misfired fuel injectors.
  3. Rotate the engine crankshaft.
Is the control lamp on?
-
Go to step 16
Go to step 18
15
Replace faulty fuel injectors.
Has the renovation been completed?
-
Go to step 26
-
16
Test the failed fuel injector driver circuit at terminals 26, 18, 10, and 2 for an open circuit, short circuit, and short to voltage.
Problem found?
-
Go to step 17
Go to step 23
17
Repair the open or short in the fuel injector control circuit.
Has the renovation been completed?
-
Go to step 26
-
18
Repair the open ignition circuit between the fuel injector harness connector and the fuel injector connector.
Has the renovation been completed?
-
Go to step 26
-
19
Measure the resistance of a spark plug that did not spark when tested.
Is the spark plug resistance less than the specified value?
30000 ohm
Go to step 20
Go to step 24
20
Check the ECM connectors and connections.
Connections OK?
-
Go to step 21
Go to step 22
21
Test the faulty ignition control circuit for an open circuit, short circuit and repair as needed.
Has the renovation been completed?
-
Go to step 26
Go to step 25
22
Repair connector or connections.
Has the renovation been completed?
-
Go to step 26
-
23
  1. Switch off the ignition.
  2. Replace the ECM.
Has the renovation been completed?
-
Go to step 26
-
24
Replace ignition wire.
Has the renovation been completed?
-
Go to step 26
-
25
Replace defective ignition coil.
Has the renovation been completed?
-
Go to step 26
Go to step 23
26
  1. Using a scan tool, clear the DTCs.
  2. Start the engine and let it idle at normal operating temperature.
  3. Drive to set DTCs as indicated in the help text.
Does the scan tool report this diagnostic as passed and passed?
-
Go to step 27
-
27
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code P0301




Cylinder 1 Misfire Detected




Circuit Description


Electronic engine management controller (ECM) monitors crankshaft and camshaft positions to detect misfiring. The ECM monitors for a rapid drop in crankshaft speed. This check is made in blocks of 100 engine revolutions. Several tests may be required to store the DTC and also to illuminate the MIL. Under minor misfire conditions, it may also take more than one stroke for the DTC to set. In the event of a significant misfire, the MIL will flash to indicate that catalytic converter damage is possible.

Conditions for setting the DTC.


  • The ignition is on while the engine is running.
  • There are no malfunctions in the crank angle, camshaft position, mass air flow or throttle position sensors.
  • Misfire detected on one cylinder.

Action Taken When the DTC Sets


  • Malfunction indicator lamp (MIL) lights up immediately after a malfunction occurs.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An intermittent fault may be due to a defective encoder wheel. Remove the crankshaft position sensor and check the encoder wheel through the sensor mounting hole. Check the porosity and condition of the wheel. If the DTC is intermittent, refer to «Diagnostics of symptoms» in this section.

DTC P0301 - Cylinder 1 Misfire Detected



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Connect the scan tool to the diagnostic terminal.
  2. Switch on the ignition, do not start the engine.
  3. Request diagnostic trouble codes.
Is the diagnostic trouble code P0300 installed?
-
Jump to the appropriate DTC table
Go to step 3
3
  1. Carry out a visual/physical check.
  2. Make necessary repairs.
Has the renovation been completed?
-
Go to step 25
Go to step 4
4
Start the engine and let it idle.
Is the number of misfires present increasing?
-
Go to step 5
Go to step 6
5
All counters are the same (within a percentage of each other?)
-
Go to step 7
Go to step 11
6
  1. Switch on the ignition, do not start the engine.
  2. View status recording data and write parameters.
  3. Drive under the conditions of the recorded conditions and the conditions for setting the DTC.
Is the number of misfires present increasing?
410 kPa
Go to step 5
Go to «Diagnostic Information»
7
  1. Stop engine.
  2. Install a pressure gauge on the fuel rail.
  3. Pay attention to the pressure with the engine running.
Is the fuel pressure within the specified value?
410 kPa
Go to step 8
Go to section «Fuel system diagnostics»
8
Check fuel for contamination.
Is the fuel correct?
-
Go to step 9
Go to step 10
9
Check engine for common problems and repair if necessary.
Has the renovation been completed?
-
Go to step 25
-
10
Replace contaminated fuel.
Has the renovation been completed?
-
Go to step 25
-
11
  1. Stop engine.
  2. Disconnect the fuel injector harness connector.
  3. Install a spark tester on cylinder #1.
  4. Check engine for ignition spark.
Is there an ignition spark?
-
Go to step 12
Go to step 21
12
Replace defective spark plug.
Has the renovation been completed?
-
Go to step 25
Go to step 13
13
  1. Stop engine.
  2. Disconnect the cylinder 1 fuel injector connector from the injector.
  3. Install a test lamp to terminal 2 of the injector harness connector.
  4. Turn the engine crankshaft and check the warning light.
Is the control lamp flashing?
-
Go to step 14
Go to step 15
14
Check injector balance.
Are the fuel injectors ok?
-
Go to step 9
Go to step 16
15
  1. Disconnect the signal lamp for checking the injectors.
  2. Test the ignition circuit terminal 1 at the injector harness connector with a test light connected to ground.
  3. Rotate the engine crankshaft.
Is the control lamp on?
-
Go to step 17
Go to step 19
16
Replace defective fuel injector.
Has the renovation been completed?
-
Go to step 25
-
17
Test the failed fuel injector control circuit for an open, short to ground, or short to voltage.
Problem found?
-
Go to step 18
Go to step 23
18
Repair the open or short in the fuel injector control circuit.
Has the renovation been completed?
-
Go to step 25
-
19
Repair the open ignition circuit between the fuel injector harness connector and the fuel injector connector.
Has the renovation been completed?
-
Go to step 25
-
20
Check the ECM connectors and connections.
Connections OK?
-
Go to step 21
Go to step 22
21
Test the failed cylinder ignition control circuit for an open circuit, short circuit and repair as necessary.
Has the renovation been completed?
-
Go to step 25
Go to step 24
22
Repair connector or connections.
Has the renovation been completed?
-
Go to step 25
-
23
  1. Switch off the ignition.
  2. Replace the ECM.
Has the renovation been completed?
-
Go to step 25
-
24
Replace defective ignition coil.
Has the renovation been completed?
-
Go to step 25
Go to step 23
25
  1. Using a scan tool, clear the DTCs.
  2. Start the engine and let it idle at normal operating temperature.
  3. Drive under the conditions for setting the DTC as indicated.
Does the scan tool report this diagnostic as successful?
-
Go to step 26
Go to step 2
26
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code P0302




Cylinder 2 Misfire Detected




Circuit Description


Electronic engine management controller (ECM) monitors crankshaft and camshaft positions to detect misfiring. The ECM monitors for a rapid drop in crankshaft speed. This check is made in blocks of 100 engine revolutions. Several tests may be required to store the DTC and also to illuminate the MIL. Under minor misfire conditions, it may also take more than one stroke for the DTC to set. In the event of a significant misfire, the MIL will flash to indicate that catalytic converter damage is possible.

Conditions for setting the DTC.


  • The ignition is on while the engine is running.
  • There are no malfunctions in the crank angle, camshaft position, mass air flow or throttle position sensors.
  • Misfire detected on one cylinder.

Action Taken When the DTC Sets


  • Malfunction indicator lamp (MIL) lights up immediately after a malfunction occurs.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An intermittent fault may be due to a defective encoder wheel. Remove the crankshaft position sensor and check the encoder wheel through the sensor mounting hole. Check the porosity and condition of the wheel. If the DTC is intermittent, refer to «Diagnostics of signs» in this section.

DTC P0302 - Cylinder 2 Misfire Detected



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Connect the scan tool to the diagnostic terminal.
  2. Switch on the ignition, do not start the engine.
  3. Request diagnostic trouble codes.
Is the diagnostic trouble code P0300 installed?
-
Jump to the appropriate DTC table
Go to step 3
3
  1. Carry out a visual/physical check.
  2. Make necessary repairs.
Has the renovation been completed?
-
Go to step 25
Go to step 4
4
Start the engine and let it idle.
Is the number of misfires present increasing?
-
Go to step 5
Go to step 6
5
All counters are the same (within a percentage of each other?)
-
Go to step 7
Go to step 11
6
  1. Switch on the ignition, do not start the engine.
  2. View status recording data and write parameters.
  3. Drive under the conditions of the recorded conditions and the conditions for setting the DTC.
Is the number of misfires present increasing?
410 kPa
Go to step 5
Go to «Diagnostic Information»
7
  1. Stop engine.
  2. Install a pressure gauge on the fuel rail.
  3. Pay attention to the pressure with the engine running.
Is the fuel pressure within the specified value?
410 kPa
Go to step 8
Go to section «Fuel system diagnostics»
8
Check fuel for contamination.
Is the fuel correct?
-
Go to step 9
Go to step 10
9
Check engine for common problems and repair if necessary.
Has the renovation been completed?
-
Go to step 25
-
10
Replace contaminated fuel.
Has the renovation been completed?
-
Go to step 25
-
11
  1. Stop engine.
  2. Disconnect the fuel injector harness connector.
  3. Install a spark tester on cylinder #2.
  4. Check engine for ignition spark.
Is there an ignition spark?
-
Go to step 12
Go to step 21
12
Replace defective spark plug.
Has the renovation been completed?
-
Go to step 25
Go to step 13
13
  1. Stop engine.
  2. Disconnect the cylinder 2 fuel injector connector from the injector.
  3. Install a test lamp to terminal 2 of the injector harness connector.
  4. Turn the engine crankshaft and check the warning light.
Is the control lamp flashing?
-
Go to step 14
Go to step 15
14
Check injector balance.
Are the fuel injectors ok?
-
Go to step 9
Go to step 16
15
  1. Disconnect the signal lamp for checking the injectors.
  2. Test the ignition circuit terminal 1 at the injector harness connector with a test light connected to ground.
  3. Rotate the engine crankshaft.
Is the control lamp on?
-
Go to step 17
Go to step 19
16
Replace defective fuel injector.
Has the renovation been completed?
-
Go to step 25
-
17
Test the failed fuel injector control circuit for an open, short to ground, or short to voltage.
Problem found?
-
Go to step 18
Go to step 23
18
Repair the open or short in the fuel injector control circuit.
Has the renovation been completed?
-
Go to step 25
-
19
Repair the open ignition circuit between the fuel injector harness connector and the fuel injector connector.
Has the renovation been completed?
-
Go to step 25
-
20
Check the ECM connectors and connections.
Connections OK?
-
Go to step 21
Go to step 22
21
Test the failed cylinder ignition control circuit for an open circuit, short circuit and repair as necessary.
Has the renovation been completed?
-
Go to step 25
Go to step 24
22
Repair connector or connections.
Has the renovation been completed?
-
Go to step 25
-
23
  1. Switch off the ignition.
  2. Replace the ECM.
Has the renovation been completed?
-
Go to step 25
-
24
Replace defective ignition coil.
Has the renovation been completed?
-
Go to step 25
Go to step 23
25
  1. Using a scan tool, clear the DTCs.
  2. Start the engine and let it idle at normal operating temperature.
  3. Drive under the conditions for setting the DTC as indicated.
Does the scan tool report this diagnostic as successful?
-
Go to step 26
Go to step 2
26
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code P0303




Cylinder 3 Misfire Detected




Circuit Description


Electronic engine management controller (ECM) monitors crankshaft and camshaft positions to detect misfiring. The ECM monitors for a rapid drop in crankshaft speed. This check is made in blocks of 100 engine revolutions. Several tests may be required to store the DTC and also to illuminate the MIL. Under minor misfire conditions, it may also take more than one stroke for the DTC to set. In the event of a significant misfire, the MIL will flash to indicate that catalytic converter damage is possible.

Conditions for setting the DTC.


  • The ignition is on while the engine is running.
  • There are no malfunctions in the crank angle, camshaft position, mass air flow or throttle position sensors.
  • Misfire detected on one cylinder.

Action Taken When the DTC Sets


  • Malfunction indicator lamp (MIL) lights up immediately after a malfunction occurs.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An intermittent fault may be due to a defective encoder wheel. Remove the crankshaft position sensor and check the encoder wheel through the sensor mounting hole. Check the porosity and condition of the wheel. If the DTC is intermittent, refer to «Diagnostics of symptoms» in this section.

DTC P0303 - Cylinder 3 Misfire Detected



Step Operation Values Yes No
1
Check this diagnostic system.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Connect the scan tool to the diagnostic terminal.
  2. Switch on the ignition, do not start the engine.
  3. Request diagnostic trouble codes.
Is the diagnostic trouble code P0300 installed?
-
Jump to the appropriate DTC table
Go to step 3
3
  1. Carry out a visual/physical check.
  2. Make necessary repairs.
Has the renovation been completed?
-
Go to step 25
Go to step 4
4
Start the engine and let it idle.
Is the number of misfires present increasing?
-
Go to step 5
Go to step 6
5
All counters are the same (within a percentage of each other?)
-
Go to step 7
Go to step 11
6
  1. Switch on the ignition, do not start the engine.
  2. View status recording data and write parameters.
  3. Drive under the conditions of the recorded conditions and the conditions for setting the DTC.
Is the number of misfires present increasing?
410 kPa
Go to step 5
Go to «Diagnostic Information»
7
  1. Stop engine.
  2. Install a pressure gauge on the fuel rail.
  3. Pay attention to the pressure with the engine running.
Is the fuel pressure within the specified value?
410 kPa
Go to step 8
Go to section «Fuel system diagnostics»
8
Check fuel for contamination.
Is the fuel correct?
-
Go to step 9
Go to step 10
9
Check engine for common problems and repair if necessary.
Has the renovation been completed?
-
Go to step 25
-
10
Replace contaminated fuel.
Has the renovation been completed?
-
Go to step 25
-
11
  1. Stop engine.
  2. Disconnect the fuel injector harness connector.
  3. Install a spark tester on cylinder #3.
  4. Check engine for ignition spark.
Is there an ignition spark?
-
Go to step 12
Go to step 21
12
Replace defective spark plug.
Has the renovation been completed?
-
Go to step 25
Go to step 13
13
  1. Stop engine.
  2. Disconnect the cylinder 3 fuel injector connector from the injector.
  3. Install a test lamp to terminal 2 of the injector harness connector.
  4. Turn the engine crankshaft and check the warning light.
Is the control lamp flashing?
-
Go to step 14
Go to step 15
14
Check injector balance.
Are the fuel injectors ok?
-
Go to step 9
Go to step 16
15
  1. Disconnect the signal lamp for checking the injectors.
  2. Test the ignition circuit terminal 1 at the injector harness connector with a test light connected to ground.
  3. Rotate the engine crankshaft.
Is the control lamp on?
-
Go to step 17
Go to step 19
16
Replace defective fuel injector.
Has the renovation been completed?
-
Go to step 25
-
17
Test the failed fuel injector control circuit for an open or short.
Problem found?
-
Go to step 18
Go to step 23
18
Repair the open or short in the fuel injector control circuit.
Has the renovation been completed?
-
Go to step 25
-
19
Repair the open ignition circuit between the fuel injector harness connector and the fuel injector connector.
Has the renovation been completed?
-
Go to step 25
-
20
Check the ECM connectors and connections.
Connections OK?
-
Go to step 21
Go to step 22
21
Test the failed cylinder ignition control circuit for an open circuit, short circuit and repair as necessary.
Has the renovation been completed?
-
Go to step 25
Go to step 24
22
Repair connector or connections.
Has the renovation been completed?
-
Go to step 25
-
23
  1. Switch off the ignition.
  2. Replace the ECM.
Has the renovation been completed?
-
Go to step 25
-
24
Replace defective ignition coil.
Has the renovation been completed?
-
Go to step 25
Go to step 23
25
  1. Using a scan tool, clear the DTCs.
  2. Start the engine and let it idle at normal operating temperature.
  3. Drive under the conditions for setting the DTC as indicated.
Does the scan tool report this diagnostic as successful?
-
Go to step 26
Go to step 2
26
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code P0304




Cylinder 4 Misfire Detected




Circuit Description


Electronic engine management controller (ECM) monitors crankshaft and camshaft positions to detect misfiring. The ECM monitors for a rapid drop in crankshaft speed. This check is made in blocks of 100 engine revolutions. Several tests may be required to store the DTC and also to illuminate the MIL. Under minor misfire conditions, it may also take more than one stroke for the DTC to set. In the event of a significant misfire, the MIL will flash to indicate that catalytic converter damage is possible.

Conditions for setting the DTC.


  • The ignition is on while the engine is running.
  • There are no malfunctions in the crank angle, camshaft position, mass air flow or throttle position sensors.
  • Misfire detected on one cylinder.

Action Taken When the DTC Sets


  • Malfunction indicator lamp (MIL) lights up immediately after a malfunction occurs.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An intermittent fault may be due to a defective encoder wheel. Remove the crankshaft position sensor and check the encoder wheel through the sensor mounting hole. Check the porosity and condition of the wheel. If the DTC is intermittent, refer to «Diagnostics of symptoms» in this section.

DTC P0304 - Cylinder 4 Misfire Detected



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Connect the scan tool to the diagnostic terminal.
  2. Switch on the ignition, do not start the engine.
  3. Request diagnostic trouble codes.
Is the diagnostic trouble code P0300 installed?
-
Jump to the appropriate DTC table
Go to step 3
3
  1. Carry out a visual/physical check.
  2. Make necessary repairs.
Has the renovation been completed?
-
Go to step 25
Go to step 4
4
Start the engine and let it idle.
Is the number of misfires present increasing?
-
Go to step 5
Go to step 6
5
All counters are the same (within a percentage of each other?)
-
Go to step 7
Go to step 11
6
  1. Switch on the ignition, do not start the engine.
  2. View status recording data and write parameters.
  3. Drive under the conditions of the recorded conditions and the conditions for setting the DTC.
Is the number of misfires present increasing?
410 kPa
Go to step 5
Go to «Diagnostic Information»
7
  1. Stop engine.
  2. Install a pressure gauge on the fuel rail.
  3. Pay attention to the pressure with the engine running.
Is the fuel pressure within the specified value?
410 kPa
Go to step 8
Go to section «Fuel system diagnostics»
8
Check fuel for contamination.
Is the fuel correct?
-
Go to step 9
Go to step 10
9
Check engine for common problems and repair if necessary.
Has the renovation been completed?
-
Go to step 25
-
10
Replace contaminated fuel.
Has the renovation been completed?
-
Go to step 25
-
11
  1. Stop engine.
  2. Disconnect the fuel injector harness connector.
  3. Install a spark tester on cylinder #4.
  4. Check engine for ignition spark.
Is there an ignition spark?
-
Go to step 12
Go to step 21
12
Replace defective spark plug.
Has the renovation been completed?
-
Go to step 25
Go to step 13
13
  1. Stop engine.
  2. Disconnect the cylinder 4 fuel injector connector from the injector.
  3. Install a test lamp to terminal 2 of the injector harness connector.
  4. Turn the engine crankshaft and check the warning light.
Is the control lamp flashing?
-
Go to step 14
Go to step 15
14
Check injector balance.
Are the fuel injectors ok?
-
Go to step 9
Go to step 16
15
  1. Disconnect the signal lamp for checking the injectors.
  2. Test the ignition circuit terminal 1 at the injector harness connector with a test light connected to ground.
  3. Rotate the engine crankshaft.
Is the control lamp on?
-
Go to step 17
Go to step 19
16
Replace defective fuel injector.
Has the renovation been completed?
-
Go to step 25
-
17
Test the failed fuel injector control circuit for an open or short.
Problem found?
-
Go to step 18
Go to step 23
18
Repair the open or short in the fuel injector control circuit.
Has the renovation been completed?
-
Go to step 25
-
19
Repair the open ignition circuit between the fuel injector harness connector and the fuel injector connector.
Has the renovation been completed?
-
Go to step 25
-
20
Check the ECM connectors and connections.
Connections OK?
-
Go to step 21
Go to step 22
21
Test the failed cylinder ignition control circuit for an open circuit, short circuit and repair as needed.
Has the renovation been completed?
-
Go to step 25
Go to step 24
22
Repair connector or connections.
Has the renovation been completed?
-
Go to step 25
-
23
  1. Switch off the ignition.
  2. Replace the ECM.
Has the renovation been completed?
-
Go to step 25
-
24
Replace defective ignition coil.
Has the renovation been completed?
-
Go to step 25
Go to step 23
25
  1. Using a scan tool, clear the DTCs.
  2. Start the engine and let it idle at normal operating temperature.
  3. Drive under the conditions for setting the DTC as indicated.
Does the scan tool report this diagnostic as successful?
-
Go to step 26
Go to step 2
26
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code P0324




Knock Sensor Module Performance




Circuit Description


knock sensor system (KS) Allows the ECM to control ignition timing to improve performance by protecting the engine from potentially harmful levels of knock. The knock sensor provides an AC voltage signal that varies with the level of vibration as the engine is running. The ECM controls ignition timing based on the amplitude and frequency of the signal from the knock sensor. The ECM learns the knock sensor noise floor at idle and uses reference values for the rest of the engine speed range. The ECM should monitor for a normal knock sensor signal within the noise channel. If the ECM is malfunctioning to prevent proper diagnosis of the knock sensor system, DTC P0324 will set.

Conditions for Running the DTC


  • The engine speed is greater than 2200 rpm.
  • The engine coolant temperature is over 40°C.

Conditions for setting the DTC.


  • Integrator bias value greater than 0.234 V (integrator offset -715 mV).
  • The integrator gradient exceeds the threshold value.
  • The difference in the value of the integrator between the final and initial values is less than 3.7 V.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

DTC 0324 - Knock Sensor Module Performance



Step Operation Values Yes No
1
Have you performed a diagnostic system check?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Examine the failure log data for this DTC.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 3
See Intermittent faults»
3
Replace the ECM.
Has the replacement been made?
-
Go to step 4
-
4
  1. Clear the DTCs with a scan tool.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 2
Go to step 5
5
Check for additional DTCs set.
Are there any DTCs that have not yet been diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic Trouble code P0327




Low frequency in the knock sensor circuit (KS)




Circuit Description


knock sensor system (KS) Allows the ECM to control ignition timing to improve performance by protecting the engine from potentially harmful levels of knock. Knock sensor (KS) located on the engine block on the intake side. The knock sensor provides an AC voltage signal that varies with the level of vibration as the engine is running. The ECM controls ignition timing based on the amplitude and frequency of the signal from the knock sensor. The ECM receives a signal from the knock sensor through the signal circuit. Ground to the knock sensor is provided by the ECM through the low voltage control circuit. The ECM uses the signal from the knock sensor to calculate an average voltage value, then assigns a voltage span change value. The ECM should monitor for a normal knock sensor signal within the voltage range. If the ECM detects a knock sensor signal out of voltage range, or if there is no signal from the knock sensor, a DTC will be set.

Conditions for setting the DTC.


  • The normalized reference level is less than the set low speed limit.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


Check and correct any unusual engine noise before using the diagnostic chart.
Any circuit suspected of producing motor noise should be carefully checked for the following:
  • Removed terminals
  • Terminal connection
  • Locks malfunction
  • Deformity
  • Terminal damage
  • Weak connection of terminals with wires
  • Physical damage to wiring harnesses

DTC 0327 - Knock Sensor Circuit (KS), low frequency



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the ECM connector.
  3. With a digital voltmeter (DVM) check for AC voltage (AC) between ECM connector J2 terminal 16 and ground.
  4. Tap the engine near the knock sensor to check for AC voltage.
Is there AC voltage and does it change when the motor is tapped?
-
Go to step 4
Go to step 3
3
  1. Replace knock sensor.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
4
Check the tightness of the knock sensor retaining bolt.
Is the tightening torque within the specified value?
18~20 Nm (13~15 lb-ft)
Go to step 6
Go to step 5
5
Tighten the knock sensor retaining bolt to the correct torque.
Has the renovation been completed?
18~20 Nm (13~15 lb-ft)
System OK
-
6
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the knock sensor connector.
  3. Disconnect the ECM connector.
  4. Test for an open or short to ground in the wire between terminal 3, 2, 1 of the knock sensor connector and terminal 16, 8 of the ECM connector J2, respectively.
Fault found?
-
Go to step 7
Go to step 8
7
  1. Repair wire or connector terminal if necessary.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
8
  1. Turn the ignition switch to the LOCK position.
  2. Replace the ECM.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-

Diagnostic trouble code (DTC) P0328




High frequency in the knock sensor circuit (KS)




Circuit Description


knock sensor system (KS) Allows the ECM to control ignition timing to improve performance by protecting the engine from potentially harmful levels of knock. Knock sensor (KS) located on the engine block on the intake side. The knock sensor provides an AC voltage signal that varies with the level of vibration as the engine is running. The ECM controls ignition timing based on the amplitude and frequency of the signal from the knock sensor. The ECM receives a signal from the knock sensor through the signal circuit. Ground to the knock sensor is provided by the ECM through the low voltage control circuit. The ECM uses the signal from the knock sensor to calculate an average voltage value, then assigns a voltage span change value. The ECM should monitor for a normal knock sensor signal within the voltage range. If the ECM detects a knock sensor signal out of voltage range, or if there is no signal from the knock sensor, a DTC will be set.

Conditions for setting the DTC.


  • The normalized reference level is greater than the set upper speed limit.
  • The engine coolant temperature is over 65.24°C.
  • Mass air flow greater than 251 mg/stroke
  • The engine speed is greater than 2496 rpm.
  • The knock sensor signal is less than 0.299V or the difference between the original signal and the filtering value is less than the threshold value.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


Check and correct any unusual engine noise before using the diagnostic chart.
Any circuit suspected of producing motor noise should be carefully checked for the following:
  • Removed terminals
  • Terminal connection
  • Locks malfunction
  • Deformity
  • Terminal damage
  • Weak connection of terminals with wires
  • Physical damage to wiring harnesses

DTC 0328 - Knock Sensor Circuit (KS), high frequency



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the ECM connector.
  3. With a digital voltmeter (DVM) check for AC voltage (AC) between ECM connector J2 terminal 16 and ground.
  4. Tap the engine near the knock sensor to check for AC voltage.
Is there AC voltage and does it change when the motor is tapped?
-
Go to step 4
Go to step 3
3
  1. Replace knock sensor.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
4
Check the tightness of the knock sensor retaining bolt.
Is the tightening torque within the specified value?
18~20 Nm (13~15 lb-ft)
Go to step 6
Go to step 5
5
Tighten the knock sensor retaining bolt to the correct torque.
Has the renovation been completed?
18~20 Nm (13~15 lb-ft)
System OK
-
6
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the knock sensor connector.
  3. Disconnect the ECM connector.
  4. Test for a short to battery in the wire between knock sensor connector terminal 3, 2, 1 and ECM connector J2 terminal 16, 8, respectively.
Fault found?
-
Go to step 7
Go to step 8
7
  1. Repair wire or connector terminal if necessary.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
8
  1. Turn the ignition switch to the LOCK position.
  2. Replace the ECM.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-

Diagnostic Trouble code P0335




Crankshaft position sensor circuit (CKP)




Circuit Description


The base signal is generated by the crankshaft position sensor (CKP). The ECM uses the base signal to calculate engine speed and crankshaft position. The ECM constantly monitors the number of pulses in the base circuit and compares it with the number of crankshaft position signal pulses it receives. If the ECM receives an incorrect number of base circuit pulses, DTC P0335 will set.

Conditions for Running the DTC


  • The camshaft position sensor pulse counter is greater than 8.

Conditions for setting the DTC.


  • No signal.
  • Missing checkmark more than 10 times.

Action Taken When the DTC Sets


  • Malfunction indicator lamp (MIL) lights up immediately after a malfunction occurs.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An intermittent fault can be caused by a loose connection, frayed insulation, or a broken wire under the insulation. Check:
Loose Connection - Check the ECM harness and connectors for loose connections, bad locks, bent or damaged terminals, and loose terminal-to-wire connections.
Harness damage - Inspect the wiring harness for damage. If the wiring harness seems OK, disconnect the ECM, turn on the ignition and observe the voltmeter reading in the base circuit by moving the ECM related connectors and wiring harness. Voltage changes will show the location of the fault.
Review the mileage of fault records as failed diagnostic tests will help evaluate the conditions under which the DTC was set. This will help diagnose the conditions.

DTC P0335 - Crankshaft Position Sensor Circuit (CKP)



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
Try to start the engine.
Does the engine start?
-
Go to step 3
Go to «The crankshaft turns, but the engine does not start»
3
  1. View and record fault log information.
  2. Clear DTC P0335.
  3. Start the engine and let it idle for 1 minute.
  4. View diagnostic trouble codes.
Is the diagnostic trouble code P0335 installed?
-
Go to step 4
Go to «Diagnostic Information»
4
  1. Disconnect the ECM and crankshaft position sensor.
  2. Check for an open circuit or short to ground at the crankshaft position sensor connector and the ECM harness connector.
Fault found?
-
Go to step 5
Go to step 6
5
Repair the open circuit or short to ground in the base circuit between the crankshaft position sensor connector and the ECM harness connector.
Has the renovation been completed?
-
Go to step 11
-
6
  1. Reconnect the ECM and crankshaft position sensor.
  2. Connect digital voltmeter (DVM) to measure the voltage in the base circuit to terminal 14 on the ECM connector.
  3. View the signal level when cranking the crankshaft.
Is the signal level close to the set value?
2.5 V
Go to step 9
Go to step 7
7
Check the crankshaft position sensor connectors and replace the terminals if necessary.
Are any terminals in need of replacement?
-
Go to step 11
Go to step 8
8
Replace crankshaft position sensor.
Is the replacement finished?
-
Go to step 11
-
9
Check the connections at the ECM and replace the terminals if necessary.
Is there a terminal that needs to be replaced?
-
Go to step 11
Go to step 10
10
Replace the ECM.
Is the replacement finished?
-
Go to step 11
-
11
  1. Using a scan tool, clear the DTCs.
  2. Start the engine and let it idle at normal operating temperature.
  3. Drive to set DTCs as indicated in the help text.
Does the scan tool report this diagnostic as passed and passed?
-
Go to step 12
Go to step 2
12
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code P0336




Crankshaft position sensor performance (CKP)




Circuit Description


The base signal is generated by the crankshaft position sensor (CKP). The ECM uses the base signal to calculate engine speed and crankshaft position. The ECM constantly monitors the number of pulses in the base circuit and compares it with the number of crankshaft position signal pulses it receives. If the ECM is receiving an incorrect number of base circuit pulses, DTC P0336 will set.

Conditions for Running the DTC


  • Engine speed fluctuations are checked every 0.01 seconds.
  • Motor reverse rotation was not detected.

Conditions for setting the DTC.


  • Engine speed fluctuation up to 25 rpm more than 10 times detected.
  • Base interval loss frequency counter over 1100.

Action Taken When the DTC Sets


  • Malfunction indicator lamp (MIL) lights up immediately after a malfunction occurs.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An intermittent fault can be caused by a loose connection, frayed insulation, or a broken wire under the insulation. Check:
Loose Connection - Check the ECM harness and connectors for loose connections, bad locks, bent or damaged terminals, and loose terminal-to-wire connections.
Harness damage - Inspect the wiring harness for damage. If the wiring harness seems OK, disconnect the ECM, turn on the ignition and observe the voltmeter reading in the base circuit by moving the ECM related connectors and wiring harness. Voltage changes will show the location of the fault.
Review the mileage of fault records as failed diagnostic tests will help evaluate the conditions under which the DTC was set. This will help diagnose the conditions.

DTC P0336 - Crankshaft Position Sensor Performance (CKP)



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
Try to start the engine.
Does the engine start?
-
Go to step 3
Go to «The crankshaft turns, but the engine does not start»
3
  1. View and record fault log information.
  2. Clear DTC P0336.
  3. Start the engine and let it idle for 1 minute.
  4. View diagnostic trouble codes.
Is the diagnostic trouble code P0336 installed?
-
Go to step 4
Go to «Diagnostic Information»
4
  1. Disconnect the ECM and crankshaft position sensor.
  2. Check for open or low voltage at the crankshaft position sensor connector and at the ECM harness connector.
Fault found?
-
Go to step 5
Go to step 6
5
Repair the open circuit or low voltage in the base circuit between the crankshaft position sensor connector and the ECM harness connector.
Has the renovation been completed?
-
Go to step 11
-
6
  1. Reconnect the ECM and crankshaft position sensor.
  2. Connect digital voltmeter (DVM) to measure the voltage in the base circuit to terminal 14 on the ECM connector.
  3. View the signal level when cranking the crankshaft.
Is the signal level close to the set value?
2.5 V
Go to step 9
Go to step 7
7
Check the crankshaft position sensor connectors and replace the terminals if necessary.
Are any terminals in need of replacement?
-
Go to step 11
Go to step 8
8
Replace crankshaft position sensor.
Is the replacement finished?
-
Go to step 11
-
9
Check the connections at the ECM and replace the terminals if necessary.
Is there a terminal that needs to be replaced?
-
Go to step 11
Go to step 10
10
Replace the ECM.
Is the replacement finished?
-
Go to step 11
-
11
  1. Using a scan tool, clear the DTCs.
  2. Start the engine and let it idle at normal operating temperature.
  3. Drive to set DTCs as indicated in the help text.
Does the scan tool report this diagnostic as passed and passed?
-
Go to step 12
Go to step 2
12
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic Trouble code P0337




Short duration of inclusion of a chain of the gauge of position of a cranked shaft (CKP)




Circuit Description


The base signal is generated by the crankshaft position sensor (CKP). The ECM uses the base signal to calculate engine speed and crankshaft position. The ECM constantly monitors the number of pulses in the base circuit and compares it with the number of crankshaft position signal pulses it receives.

Conditions for Running the DTC


  • The idling speed is 50 rpm or more higher than the specified one.

Conditions for setting the DTC.


  • Interval correction frequency counter (negative terminal side) more than 215.

Action Taken When the DTC Sets


  • Malfunction indicator lamp (MIL) lights up immediately after a malfunction occurs.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An intermittent fault can be caused by a loose connection, frayed insulation, or a broken wire under the insulation. Check:
Loose Connection - Check the ECM harness and connectors for loose connections, bad locks, bent or damaged terminals, and loose terminal-to-wire connections.
Harness damage - Inspect the wiring harness for damage. If the wiring harness seems OK, disconnect the ECM, turn on the ignition and observe the voltmeter reading in the base circuit by moving the ECM related connectors and wiring harness. Voltage changes will show the location of the fault.
Review the mileage of fault records as failed diagnostic tests will help evaluate the conditions under which the DTC was set. This will help diagnose the conditions.

DTC P0337 - Crankshaft Position Sensor Circuit Too Short (CKP)



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
Try to start the engine.
Does the engine start?
-
Go to step 3
Go to «The crankshaft turns, but the engine does not start»
3
  1. View and record fault log information.
  2. Clear DTC P0337.
  3. Start the engine and let it idle for 1 minute.
  4. View diagnostic trouble codes.
Is the diagnostic trouble code P0337 installed?
-
Go to step 4
Go to «Diagnostic Information»
4
  1. Disconnect the ECM and crankshaft position sensor.
  2. Check for open or low voltage at the crankshaft position sensor connector and at the ECM harness connector.
Fault found?
-
Go to step 5
Go to step 6
5
Repair the open circuit or low voltage in the base circuit between the crankshaft position sensor connector and the ECM harness connector.
Has the renovation been completed?
-
Go to step 11
-
6
  1. Reconnect the ECM and crankshaft position sensor.
  2. Connect digital voltmeter (DVM) to measure the voltage in the base circuit to terminal 14 on the ECM connector.
  3. View the signal level when cranking the crankshaft.
Is the signal level close to the set value?
2.5 V
Go to step 9
Go to step 7
7
Check the crankshaft position sensor connectors and replace the terminals if necessary.
Are any terminals in need of replacement?
-
Go to step 11
Go to step 8
8
Replace crankshaft position sensor.
Is the replacement finished?
-
Go to step 11
-
9
Check the connections at the ECM and replace the terminals if necessary.
Is there a terminal that needs to be replaced?
-
Go to step 11
Go to step 10
10
Replace the ECM.
Is the replacement finished?
-
Go to step 11
-
11
  1. Using a scan tool, clear the DTCs.
  2. Start the engine and let it idle at normal operating temperature.
  3. Drive to set DTCs as indicated in the help text.
Does the scan tool report this diagnostic as passed and passed?
-
Go to step 12
Go to step 2
12
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code (DTC) P0338




Long duty cycle of the crankshaft position sensor circuit (CKP)




Circuit Description


The base signal is generated by the crankshaft position sensor (CKP). The ECM uses the base signal to calculate engine speed and crankshaft position. The ECM constantly monitors the number of pulses in the base circuit and compares it with the number of crankshaft position signal pulses it receives.

Conditions for Running the DTC


  • The vehicle speed is less than 1 km/h or more than 25 km/h.

Conditions for setting the DTC.


  • Interval correction frequency counter (positive terminal side) more than 215.

Action Taken When the DTC Sets


  • Malfunction indicator lamp (MIL) lights up immediately after a malfunction occurs.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


An intermittent fault can be caused by a loose connection, frayed insulation, or a broken wire under the insulation. Check:
Loose Connection - Check the ECM harness and connectors for loose connections, bad locks, bent or damaged terminals, and loose terminal-to-wire connections.
Harness damage - Inspect the wiring harness for damage. If the wiring harness seems OK, disconnect the ECM, turn on the ignition and observe the voltmeter reading in the base circuit by moving the ECM related connectors and wiring harness. Voltage changes will show the location of the fault.
Review the mileage of fault records as failed diagnostic tests will help evaluate the conditions under which the DTC was set. This will help diagnose the conditions.

DTC P0338 - Crankshaft Position Sensor Circuit Too Long On (CKP)



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
Try to start the engine.
Does the engine start?
-
Go to step 3
Go to «The crankshaft turns, but the engine does not start»
3
  1. View and record fault log information.
  2. Clear DTC P0338.
  3. Start the engine and let it idle for 1 minute.
  4. View diagnostic trouble codes.
Is the diagnostic trouble code P0337 installed?
-
Go to step 4
Go to «Diagnostic Information»
4
  1. Disconnect the ECM and crankshaft position sensor.
  2. Check the crankshaft position sensor connector and the ECM harness connector for high voltage.
Fault found?
-
Go to step 5
Go to step 6
5
Check for high voltage on the base circuit between the crankshaft position sensor connector and the ECM harness connector.
Has the renovation been completed?
-
Go to step 11
-
6
  1. Reconnect the ECM and crankshaft position sensor.
  2. Connect digital voltmeter (DVM) to measure the voltage in the base circuit to terminal 14 on the ECM connector.
  3. View the signal level when cranking the crankshaft.
Is the signal level close to the set value?
2.5 V
Go to step 9
Go to step 7
7
Check the crankshaft position sensor connectors and replace the terminals if necessary.
Are any terminals in need of replacement?
-
Go to step 11
Go to step 8
8
Replace crankshaft position sensor.
Is the replacement finished?
-
Go to step 11
-
9
Check the connections at the ECM and replace the terminals if necessary.
Is there a terminal that needs to be replaced?
-
Go to step 11
Go to step 10
10
Replace the ECM.
Is the replacement finished?
-
Go to step 11
-
11
  1. Using a scan tool, clear the DTCs.
  2. Start the engine and let it idle at normal operating temperature.
  3. Drive to set DTCs as indicated in the help text.
Does the scan tool report this diagnostic as passed and passed?
-
Go to step 12
Go to step 2
12
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic Trouble code P0340




Camshaft position sensor circuit (SMR)




Circuit Description


Camshaft position sensor (SMR) used to determine the position of the camshaft, as well as in relation to the position of the crankshaft, so that the ECM can determine which cylinder of the injector to supply fuel. The signal polarity of the camshaft position sensor only needs to be changed once according to the position of the crankshaft.

Conditions for setting the DTC.


  • Phase deviation (high or low signal for a long time, caused by a contact problem) more than 12 times.

Action Taken When the DTC Sets


  • Malfunction indicator lamp (MIL) lights up immediately after a malfunction occurs.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


Check and correct any unusual engine noise before using the diagnostic chart.
Any circuit suspected of producing motor noise should be carefully checked for the following:
  • Removed terminals
  • Terminal connection
  • Locks malfunction
  • Deformity
  • Terminal damage
  • Weak connection of terminals with wires
  • Physical damage to wiring harnesses

DTC P0340 - Camshaft Position Sensor Circuit (SMR)



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the camshaft position sensor connector
  3. Check the serviceability of the connector and terminals
Fault found?
-
Go to step 4
Go to step 3
3
  1. Turn the ignition key to the ON position.
  2. Disconnect the ECM connector.
  3. Check ECM and sensor leads for bent or damaged terminals
  4. Check for an open, short to ground, or battery voltage in the wire between track 3 of the camshaft position sensor and connector 32 of the ECM.
  5. Check for an open in the wire between terminal 2 of the camshaft position sensor and connector 7 of the ECM.
Fault found?
-
Go to step 4
Go to step 5
4
  1. Turn the ignition switch to the LOCK position.
  2. Repair or replace wire or connector
  3. Clear all DTCs in the ECM.
  4. Start the engine
  5. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
5
  1. Turn the ignition switch to the LOCK position.
  2. Replace camshaft position sensor.
  3. Clear all DTCs in the ECM.
  4. Start the engine
  5. Perform a diagnostic system check.
DTC P0340 cleared?
-
System OK
Go to step 6
6
  1. Replace the ECM.
  2. Start the engine
  3. Perform a diagnostic system check.
Is the replacement finished?
-
Go to step 7
-
7
  1. Using a scan tool, clear the DTCs.
  2. Start the engine and let it idle at normal operating temperature.
  3. Drive to set DTCs as indicated in the help text.
Does the scan tool report this diagnostic as passed and passed?
-
Go to step 8
-
8
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code P0341




Camshaft position sensor performance (SMR)




Circuit Description


Camshaft position sensor (SMR) used to determine the position of the camshaft, as well as in relation to the position of the crankshaft, so that the ECM can determine which cylinder of the injector to supply fuel. The signal polarity of the camshaft position sensor only needs to be changed once according to the position of the crankshaft.

Conditions for setting the DTC.


  • Phase deviation (signal sequence: high - high - low - low, tooth or noise problem) more than 12 times.

Action Taken When the DTC Sets


  • Malfunction indicator lamp (MIL) lights up immediately after a malfunction occurs.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


Check and correct any unusual engine noise before using the diagnostic chart.
Any circuit suspected of producing motor noise should be carefully checked for the following:
  • Removed terminals
  • Terminal connection
  • Locks malfunction
  • Deformity
  • Terminal damage
  • Weak connection of terminals with wires
  • Physical damage to wiring harnesses

DTC P0341 - Camshaft Position Sensor Performance (SMR)



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the camshaft position sensor connector
  3. Check the serviceability of the connector and terminals
Fault found?
-
Go to step 4
Go to step 3
3
  1. Turn the ignition key to the ON position.
  2. Disconnect the ECM connector.
  3. Check ECM and sensor leads for bent or damaged terminals
  4. Check for an open, short to ground, or battery voltage in the wire between track 3 of the camshaft position sensor and connector 32 of the ECM.
  5. Check for an open in the wire between terminal 2 of the camshaft position sensor and connector 7 of the ECM.
Fault found?
-
Go to step 4
Go to step 5
4
  1. Turn the ignition switch to the LOCK position.
  2. Repair or replace wire or connector
  3. Clear all DTCs in the ECM.
  4. Start the engine
  5. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
5
  1. Turn the ignition switch to the LOCK position.
  2. Replace camshaft position sensor.
  3. Clear all DTCs in the ECM.
  4. Start the engine
  5. Perform a diagnostic system check.
DTC P0341 reset?
-
System OK
Go to step 6
6
  1. Replace the ECM.
  2. Start the engine
  3. Perform a diagnostic system check.
Is the replacement finished?
-
Go to step 7
-
7
  1. Using a scan tool, clear the DTCs.
  2. Start the engine and let it idle at normal operating temperature.
  3. Drive to set DTCs as indicated in the help text.
Does the scan tool report this diagnostic as passed and passed?
-
Go to step 8
-
8
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code P0342




Low Voltage Camshaft Position Sensor Circuit




Circuit Description


Camshaft position sensor (SMR) used to determine the position of the camshaft, as well as in relation to the position of the crankshaft, so that the ECM can determine which cylinder of the injector to supply fuel. The signal polarity of the camshaft position sensor only needs to be changed once according to the position of the crankshaft.

Conditions for setting the DTC.


  • Low CMP sensor signal and missing phase more than 12 times.

Action Taken When the DTC Sets


  • Malfunction indicator lamp (MIL) lights up immediately after a malfunction occurs.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


Check and correct any unusual engine noise before using the diagnostic chart.
Any circuit suspected of producing motor noise should be carefully checked for the following:
  • Removed terminals
  • Terminal connection
  • Locks malfunction
  • Deformity
  • Terminal damage
  • Weak connection of terminals with wires
  • Physical damage to wiring harnesses

DTC P0342 - Camshaft Position Sensor Circuit Low Voltage



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the camshaft position sensor connector
  3. Check the serviceability of the connector and terminals
Fault found?
-
Go to step 4
Go to step 3
3
  1. Turn the ignition key to the ON position.
  2. Disconnect the ECM connector.
  3. Check ECM and sensor leads for bent or damaged terminals
  4. Check for an open, short to ground, or battery voltage in the wire between track 3 of the camshaft position sensor and connector 32 of the ECM.
  5. Check for an open in the wire between terminal 2 of the camshaft position sensor and connector 7 of the ECM.
Fault found?
-
Go to step 4
Go to step 5
4
  1. Turn the ignition switch to the LOCK position.
  2. Repair or replace wire or connector
  3. Clear all DTCs in the ECM.
  4. Start the engine
  5. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
5
  1. Turn the ignition switch to the LOCK position.
  2. Replace camshaft position sensor.
  3. Clear all DTCs in the ECM.
  4. Start the engine
  5. Perform a diagnostic system check.
DTC P0342 reset?
-
System OK
Go to step 6
6
  1. Replace the ECM.
  2. Start the engine
  3. Perform a diagnostic system check.
Is the replacement finished?
-
Go to step 7
-
7
  1. Using a scan tool, clear the DTCs.
  2. Start the engine and let it idle at normal operating temperature.
  3. Drive to set DTCs as indicated in the help text.
Does the scan tool report this diagnostic as passed and passed?
-
Go to step 8
-
8
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code (DTC) P0343




Camshaft position sensor circuit high voltage (SMR)




Circuit Description


Camshaft position sensor (SMR) used to determine the position of the camshaft, as well as in relation to the position of the crankshaft, so that the ECM can determine which cylinder of the injector to supply fuel. The signal polarity of the camshaft position sensor only needs to be changed once according to the position of the crankshaft.

Conditions for setting the DTC.


  • High CMP sensor signal and missing phase more than 12 times.

Action Taken When the DTC Sets


  • Malfunction indicator lamp (MIL) lights up immediately after a malfunction occurs.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


Check and correct any unusual engine noise before using the diagnostic chart.
Any circuit suspected of producing motor noise should be carefully checked for the following:
  • Removed terminals
  • Terminal connection
  • Locks malfunction
  • Deformity
  • Terminal damage
  • Weak connection of terminals with wires
  • Physical damage to wiring harnesses

DTC P0343 - Camshaft Position Sensor Circuit High Voltage (SMR)



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the camshaft position sensor connector
  3. Check the serviceability of the connector and terminals
Fault found?
-
Go to step 4
Go to step 3
3
  1. Turn the ignition key to the ON position.
  2. Disconnect the ECM connector.
  3. Check ECM and sensor leads for bent or damaged terminals
  4. Check for an open, short to ground, or battery voltage in the wire between track 3 of the camshaft position sensor and connector 32 of the ECM.
  5. Check for an open in the wire between terminal 2 of the camshaft position sensor and connector 7 of the ECM.
Fault found?
-
Go to step 4
Go to step 5
4
  1. Turn the ignition switch to the LOCK position.
  2. Repair or replace wire or connector
  3. Clear all DTCs in the ECM.
  4. Start the engine
  5. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
5
  1. Turn the ignition switch to the LOCK position.
  2. Replace camshaft position sensor.
  3. Clear all DTCs in the ECM.
  4. Start the engine
  5. Perform a diagnostic system check.
DTC P0343 reset?
-
System OK
Go to step 6
6
  1. Replace the ECM.
  2. Start the engine
  3. Perform a diagnostic system check.
Is the replacement finished?
-
Go to step 7
-
7
  1. Using a scan tool, clear the DTCs.
  2. Start the engine and let it idle at normal operating temperature.
  3. Drive to set DTCs as indicated in the help text.
Does the scan tool report this diagnostic as passed and passed?
-
Go to step 8
-
8
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code P0403




EGR Solenoid Control Circuit (EGR)




Circuit Description


The exhaust gas recirculation system is used to reduce nitrogen oxide emissions (NOx), caused by high combustion temperatures. It does this by feeding a small amount of exhaust gases back into the combustion chamber. When the air-fuel mixture is combined with the exhaust gases, the combustion temperature decreases.
This system uses an electric EGR valve. The electric valve of the exhaust gas recirculation system is designed to accurately supply exhaust gases to the engine without the use of vacuum in the intake manifold. The valve controls the flow of exhaust gases to the intake manifold from the exhaust manifold through the throttle using a needle controlled by the ECM. The ECM controls the needle position using the throttle position sensor inputs and the intake manifold absolute pressure sensor. The ECM then commands the EGR valve to operate as needed by controlling the ignition signal through the ECM. This can be monitored on a scan tool as the desired EGR position.
The ECM controls the result of its command execution by the response signal. With a reference signal of 5 V and a short circuit "masses" on the EGR valve, a signal representing the position of the EGR valve needle is output to the ECM. This feedback is also monitored on a scan tool and displays the actual position of the EGR valve needle. The actual position of the EGR valve must always be within the specified or desired position.

Conditions for setting the DTC.


  • The integral controller checks the current and voltage of the output stage.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

DTC P0403 - EGR Solenoid Valve Control Circuit (EGR)



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the EGR solenoid connector.
  3. Check for an open or short in the wire between EGR connector terminal E and main relay terminal 87.
  4. Check the wire between the EGR valve connector terminal A and the ECM connector J2 terminal 37 for an open or short.
Fault found?
-
Go to step 3
Go to step 4
3
  1. Repair wire or connector terminal if necessary.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
4
  1. Connect the EGR solenoid connector.
  2. Turn the ignition key to the ON position.
  3. With a digital voltmeter (DVM) Measure the voltage between the EGR connector terminal A and the positive battery terminal.
Is the measured voltage within the specified value?
12~13V
Go to step 6
Go to step 5
5
  1. Replace EGR valve.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
6
  1. Replace the ECM.
  2. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-

Diagnostic Trouble code P0404




Exhaust gas recirculation, open position performance




Circuit Description


The exhaust gas recirculation system is used to reduce nitrogen oxide emissions (NOx), caused by high combustion temperatures. It does this by feeding a small amount of exhaust gases back into the combustion chamber. When the air-fuel mixture is combined with the exhaust gases, the combustion temperature decreases.
This system uses an electric EGR valve. The electric valve of the exhaust gas recirculation system is designed to accurately supply exhaust gases to the engine without the use of vacuum in the intake manifold. The valve controls the flow of exhaust gases to the intake manifold from the exhaust manifold through the throttle using a needle controlled by the ECM. The ECM controls the needle position using the throttle position sensor inputs and the intake manifold absolute pressure sensor. The ECM then commands the EGR valve to operate as needed by controlling the ignition signal through the ECM. This can be monitored on a scan tool as the desired EGR position.
The ECM controls the result of its command execution by the response signal. With a reference signal of 5 V and a short circuit "masses" on the EGR valve, a signal representing the position of the EGR valve needle is output to the ECM. This feedback is also monitored on a scan tool and displays the actual position of the EGR valve needle. The actual position of the EGR valve must always be within the specified or desired position.

Conditions for Running the DTC


  • No encoder errors.
  • No high power EGR stage error and battery voltage between 10V and 16V.
  • engine running
  • Fuel cut off.

Conditions for setting the DTC.


  • The EGR valve position is greater than the filtration valve position, and the EGR valve position during filtration is greater than 20%.
or
  • The EGR valve position is less than the filtration valve position, and the EGR valve position during filtration is greater than 20%.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


Due to moisture inherent in exhaust systems, the recirculation valve may freeze in cold weather. After putting the car in a warm room for repair, the valve warms up and the problem disappears. The fault can be easily confirmed by observing the actual and desired position of the recirculation valve on a cold vehicle using a scan tool. Check status buffer information (engine coolant temperature) in order to determine if the DTC was set when the vehicle was cold.

DTC P0404 - Exhaust Gas Recirculation Open Operation



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the EGR solenoid connector.
  3. Connect a test lamp between terminal D of the EGR connector and the positive battery terminal.
Is the control lamp on?
-
Go to step 4
Go to step 3
3
  1. If necessary, repair the wire or connector pin between EGR connector track D and ECM connector J2 track A13.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
4
  1. Connect a test lamp between terminal C of the EGR connector and terminal 29 of the ECM connector J2.
  2. Turn the ignition key to the ON position.
Is the control lamp on?
-
Go to step 6
Go to step 5
5
  1. If necessary, repair the wire or connector pin between EGR connector track C and ECM connector J2 track 29.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
6
  1. Connect a test lamp between EGR connector track B and ECM connector J2 track 6.
  2. Turn the ignition key to the ON position.
Is the control lamp on?
-
Go to step 8
Go to step 7
7
  1. Repair the wire or connector pin between EGR connector track B and ECM connector J2 track 6.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
8
  1. Connect a test lamp between EGR connector track E and ECM connector J2 track 37.
  2. Turn the ignition key to the ON position.
Is the control lamp on?
-
Go to step 10
Go to step 9
9
  1. Repair the wire or connector pin between EGR connector track E and ECM connector J2 track 37.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
10
Measure the resistance of the EGR solenoid valve.
Is the resistance within the specified value?
7.8~8.6ohm
Go to step 2
Go to step 11
11
  1. Replace EGR valve.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
12
  1. Turn the ignition switch to the LOCK position.
  2. Replace the ECM.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-

Diagnostic Trouble code P0405




Exhaust Gas Recirculation Position Sensor Circuit Low




Circuit Description


The exhaust gas recirculation system is used to reduce nitrogen oxide emissions (NOx), caused by high combustion temperatures. It does this by feeding a small amount of exhaust gases back into the combustion chamber. When the air-fuel mixture is combined with the exhaust gases, the combustion temperature decreases.
This system uses an electric EGR valve. The electric valve of the exhaust gas recirculation system is designed to accurately supply exhaust gases to the engine without the use of vacuum in the intake manifold. The valve controls the flow of exhaust gases to the intake manifold from the exhaust manifold through the throttle using a needle controlled by the ECM. The ECM controls the needle position using the throttle position sensor inputs and the intake manifold absolute pressure sensor. The ECM then commands the EGR valve to operate as needed by controlling the ignition signal through the ECM. This can be monitored on a scan tool as the desired EGR position.
The ECM controls the result of its command execution by the response signal. With a reference signal of 5 V and a short circuit "masses" on the EGR valve, a signal representing the position of the EGR valve needle is output to the ECM. This feedback is also monitored on a scan tool and displays the actual position of the EGR valve needle. The actual position of the EGR valve must always be within the specified or desired position.

Conditions for Running the DTC


  • Battery voltage from 10 V to 16 V.
  • engine running

Conditions for setting the DTC.


  • Exhaust gas recirculation system voltage (EGR) less than 0.16 V.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


Due to moisture inherent in exhaust systems, the recirculation valve may freeze in cold weather. After putting the car in a warm room for repair, the valve warms up and the problem disappears. The fault can be easily confirmed by observing the actual and desired position of the recirculation valve on a cold vehicle using a scan tool. Check status buffer information (engine coolant temperature) in order to determine if the DTC was set when the vehicle was cold.

DTC P0405 - Exhaust Gas Recirculation Position Sensor Circuit Low



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the EGR solenoid connector.
  3. Turn the ignition key to the ON position.
  4. With a digital voltmeter (DVM) measure the voltage between pins D and B of the EGR connector.
Is the measured voltage within the specified value?
5 V
Go to step 3
Go to step 5
3
  1. Connect a safety jumper between pins C and B of the EGR connector.
Does the scan tool indicate the EGR potentiometer signal voltage is higher than the specified value?
4 V
Go to step 9
Go to step 8
4
With a digital voltmeter (DVM) Measure voltage between EGR connector pin B and ground.
Is the measured voltage within the specified value?
5 V
Go to step 5
Go to step 8
5
  1. Turn the ignition switch to the LOCK position.
  2. Check for a short to ground in the wire between EGR connector track D and ECM connector J2 track 13.
Fault found?
-
Go to step 6
Go to step 7
6
  1. Repair wire or connector terminal if necessary.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
7
Check for a short to ground in the wire between EGR connector track B and ECM connector J2 track 6.
Fault found?
-
Go to step 6
Go to step 8
8
Check for a short to ground in the wire between EGR connector terminal C and ECM connector J2 terminal 29.
Fault found?
-
Go to step 6
Go to step 10
9
  1. Replace the EGR solenoid valve.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
10
  1. Replace the ECM.
  2. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-

Diagnostic Trouble code P0406




Exhaust Gas Recirculation Position Sensor Circuit High




Circuit Description


The exhaust gas recirculation system is used to reduce nitrogen oxide emissions (NOx), caused by high combustion temperatures. It does this by feeding a small amount of exhaust gases back into the combustion chamber. When the air-fuel mixture is combined with the exhaust gases, the combustion temperature decreases.
This system uses an electric EGR valve. The electric valve of the exhaust gas recirculation system is designed to accurately supply exhaust gases to the engine without the use of vacuum in the intake manifold. The valve controls the flow of exhaust gases to the intake manifold from the exhaust manifold through the throttle using a needle controlled by the ECM. The ECM controls the needle position using the throttle position sensor inputs and the intake manifold absolute pressure sensor. The ECM then commands the EGR valve to operate as needed by controlling the ignition signal through the ECM. This can be monitored on a scan tool as the desired EGR position.
The ECM controls the result of its command execution by the response signal. With a reference signal of 5 V and a short circuit "masses" on the EGR valve, a signal representing the position of the EGR valve needle is output to the ECM. This feedback is also monitored on a scan tool and displays the actual position of the EGR valve needle. The actual position of the EGR valve must always be within the specified or desired position.

Conditions for Running the DTC


  • Battery voltage from 10 V to 16 V.
  • engine running
  • There is no valve position voltage above the threshold.

Conditions for setting the DTC.


  • The EGR system voltage is higher than 4.7 V.
  • The valve position feedback voltage offset is less than 0.2V or greater than 2V.

Action Taken When the DTC Sets


  • Malfunction indicator indicator lamp (MIL) lights up immediately after a malfunction occurs.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


Due to moisture inherent in exhaust systems, the recirculation valve may freeze in cold weather. After putting the car in a warm room for repair, the valve warms up and the problem disappears. The fault can be easily confirmed by observing the actual and desired position of the recirculation valve on a cold vehicle using a scan tool. Check status buffer information (engine coolant temperature) in order to determine if the DTC was set when the vehicle was cold.

DTC P0406 - Exhaust Gas Recirculation Position Sensor Circuit High



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the EGR solenoid connector.
  3. Turn the ignition key to the ON position.
  4. With a digital voltmeter (DVM) measure the voltage between pins D and B of the EGR connector.
Is the measured voltage within the specified value?
5 V
Go to step 3
Go to step 5
3
  1. Connect a safety jumper between pins C and B of the EGR connector.
Does the scan tool indicate the EGR potentiometer signal voltage is higher than the specified value?
4 V
Go to step 9
Go to step 8
4
With a digital voltmeter (DVM) Measure voltage between EGR connector pin B and ground.
Is the measured voltage within the specified value?
5 V
Go to step 5
Go to step 8
5
  1. Turn the ignition switch to the LOCK position.
  2. Check the wire between EGR valve connector terminal D and ECM connector J2 terminal 13 for an open or short to battery voltage.
Fault found?
-
Go to step 6
Go to step 7
6
  1. Repair wire or connector terminal if necessary.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
7
Test the wire between EGR valve connector track B and ECM connector J2 track 6 for an open or short to battery voltage.
Fault found?
-
Go to step 6
Go to step 8
8
Test the wire between EGR valve connector terminal C and ECM connector J2 terminal 29 for an open or short to battery voltage.
Fault found?
-
Go to step 6
Go to step 10
9
  1. Replace the EGR solenoid valve.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
10
  1. Replace the ECM.
  2. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-

Diagnostic Trouble code P0420




Poor catalytic converter performance




Circuit Description


For hydrocarbon exhaust emission control (NS), carbon monoxide (SO), as well as nitric oxide (NOx) A three-way catalytic converter is used. The catalyst in the converter speeds up the chemical oxidation reaction of HC and CO in the exhaust gas, turning them into harmless water vapor and carbon dioxide. It also reduces NOx by converting it to nitrogen. The catalytic converter can also store oxygen.
The ECM can control this process using an oxygen sensor with an electric heater (HO2S), located in the exhaust stream behind the catalytic converter. This sensor produces a signal that indicates the amount of oxygen catalyst, which in turn indicates the ability to effectively neutralize the emission of exhaust gases. The ECM monitors the efficiency of the catalytic converter. After the warm-up and stabilization phase of the engine idling, the ECM adds and reduces fuel by monitoring the response of the downstream HO2S. If the catalytic converter is functioning properly, this HO2S will respond more slowly to additional fuel than the upstream HO2S. When the response of the downstream HO2S is close to that of the upstream HO2S, the oxygen storage capacity or catalyst efficiency is considered poor and the MIL will illuminate (MIL).

Conditions for Running the DTC


  • The number of engine revolutions in the range from 1480 to 3400 rpm.
  • Engine load between 20% and 55%.
  • The temperature of the catalytic converter in the range from 620°C to 900°C.
  • Purge ratio (high load on the carbon filter) above 10.
  • HO2S1 control is enabled.

Conditions for setting the DTC.


  • The amplitude of the signal from the HO2S2 sensor is greater than 0.4.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


The catalytic converter test may stop due to a change in engine load. In the process of checking the converter, do not change the engine load (those. battery, cooling fan, heater motor).
An intermittent failure can be caused by a loose connection, frayed insulation, or a broken wire in the insulation.
Any circuit that may cause intermittent failure should be carefully checked for the following:
  • Removed terminals
  • Terminal connection
  • Locks malfunction
  • Deformity
  • Terminal damage
  • Weak connection of terminals with wires.

DTC P0420 - Catalytic Converter Efficiency Low



Step Operation Values Yes No
1
Perform a diagnostic system check.
Check done?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Connect the scan tool to the diagnostic terminal.
  2. Turn on the ignition.
Have any component diagnostic trouble codes been installed?
-
Jump to the appropriate DTC table
Go to step 3
3
  1. Visually/physically check the following:
  2. Exhaust system for leaks
  3. Oxygen sensor with electric heater (HO2S)
Problem found?
-
Go to step 4
Go to step 5
4
Repair the exhaust system as required
Has the renovation been completed?
-
Go to step 6
-
5
Replace three-way catalytic converter.
Has the renovation been completed?
-
Go to step 6
-
6
  1. Using a scan tool, clear the DTCs.
  2. Start the engine and let it idle at normal operating temperature.
  3. Drive to set DTCs as indicated in the help text.
Does the scan tool report this diagnostic as passed and passed?
-
Go to step 7
Go to step 2
7
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic Trouble code P0443




EVAP canister purge valve control circuit




Circuit Description


EVAP canister purge valve (SUPS) diverts fuel vapors from the EVAP canister to the intake manifold. The EVAP canister purge valve is a pulse width modulated signal controlled valve (PWM). The ignition voltage is transmitted directly to the EVAP canister purge valve. The ECM controls the valve by grounding the control circuit through a semiconductor device, the so-called. drivers. The device is equipped with a feedback circuit that increases the voltage. The ECM can detect an open control circuit, a short to ground, or a short to voltage by monitoring the feedback voltage.

Conditions for setting the DTC.


  • The integral controller checks the current and voltage of the output stage.
  • Battery voltage from 9.039V to 25.898V.
  • PWM (pulse width modulation) EVAP canister purge opening between 7.8125% and 98.8125%.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


  1. If the fault is intermittent, move the appropriate harnesses and connectors while the engine is running while monitoring the condition of the corresponding component circuit with a scan tool. Circuit status parameter changes from OK (Correctly) or Indeterminate (Undefined) to Fault (out of order), if the condition is associated with a circuit or connector. Control Module Information (ODM) is in the module's data list.
  2. For the instability of the condition, see «Intermittent faults".

DTC P0443 - EVAP Canister Purge Valve Control Circuit



Step Operation Values Yes No
1
Have you performed a diagnostic system check?
Check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Start the engine.
  2. Warm up the engine to operating temperature.
  3. Check the DTC data with a scan tool.
Did the DTC indicate a misfire?
-
Go to step 4
Go to step 3
3
  1. Examine the failure log data for this DTC.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 4
Go to «Diagnostic Information»
4
  1. Switch off the ignition.
  2. Disconnect the EVAP canister purge valve.
  3. Switch on the ignition with the engine off.
  4. Connect a test lamp between the ignition 1 voltage circuit of the EVAP canister purge valve and the EVAP canister purge valve control circuit.
  5. Command the scan tool to open the EVAP canister purge valve to 50 percent, then to 0 percent.
  6. Exit output control with the scan tool.
Is the control lamp on or flashing?
-
Go to step 5
Go to step 6
5
Measure with Digital Multimeter (DMM) voltage between the EVAP canister purge valve control circuit and the ECM housing.
Is the voltage within the specified range?
2.6-4.6V
Go to step 8
Go to step 9
6
Connect a test lamp between the ignition 1 voltage circuit of the EVAP canister purge valve and the ECM housing.
Is the control lamp on?
-
Go to step 7
Go to step 10
7
  1. Switch off the ignition.
  2. Disconnect the ECM
  3. Check for an open in the EVAP canister purge valve control circuit.
Fault found and corrected?
-
Go to step 13
Go to step 9
8
Check the EVAP canister purge valve for fault persistence and connection.
Fault found and corrected?
-
Go to step 13
Go to step 11
9
Check the ECM for intermittent faults or loose connections.
Fault found and corrected?
-
Go to step 13
Go to step 12
10
  1. Repair the open circuit in the ignition voltage source 1 circuit of the EVAP canister purge valve or intermittent short to ground.
  2. Replace fuse if necessary.
Repair completed?
-
Go to step 13
-
11
Replace canister purge valve.
Has the replacement been made?
-
Go to step 13
-
12
Replace the ECM.
Has the replacement been made?
-
Go to step 13
-
13
  1. Clear the DTCs with a scan tool.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 2
Go to step 14
14
Check for additional DTCs set.
Are there any DTCs that have not yet been diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code (DTC) P0458




EVAP canister purge valve control circuit low voltage




Circuit Description


EVAP canister purge valve (SUPS) diverts fuel vapors from the EVAP canister to the intake manifold. The EVAP canister purge valve is a pulse width modulated signal controlled valve (PWM). The ignition voltage is transmitted directly to the EVAP canister purge valve. The ECM controls the valve by grounding the control circuit through a semiconductor device, the so-called. drivers. The device is equipped with a feedback circuit that increases the voltage. The ECM can detect an open control circuit, a short to ground, or a short to voltage by monitoring the feedback voltage.

Conditions for setting the DTC.


  • The integral controller checks the current and voltage of the output stage.
  • Battery voltage from 9.039V to 25.898V.
  • PWM (pulse width modulation) EVAP canister purge opening between 7.8125% and 98.8125%.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


  • If the fault is intermittent, move the appropriate harnesses and connectors while the engine is running while monitoring the condition of the corresponding component circuit with a scan tool. Circuit status parameter changes from OK (Correctly) or Indeterminate (Undefined) to Fault (out of order), if the condition is associated with a circuit or connector. Control Module Information (ODM) is in the module's data list.
  • For the instability of the condition, see «Intermittent faults".

DTC P0458 - EVAP Canister Purge Valve Control Circuit Low Voltage



Step Operation Values Yes No
1
Have you performed a diagnostic system check?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Start the engine.
  2. Check the DTC data with a scan tool.
Did the DTC indicate a failure of this ignition?
-
Go to step 4
Go to step 3
3
  1. Examine the failure log data for this DTC.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 4
Go to «Diagnostic Information»
4
  1. Switch off the ignition.
  2. Disconnect the EVAP canister purge valve.
  3. Switch on the ignition with the engine off.
  4. Connect a test lamp between the ignition 1 voltage circuit of the EVAP canister purge valve and the EVAP canister purge valve control circuit.
  5. Command the scan tool to open the EVAP canister purge valve to 50 percent, then to 0 percent.
  6. Exit output control with the scan tool.
Is the control lamp lit or flashing when a 50 percent open command is given and does it go out when a 0 percent command is given?
-
Go to step 5
Go to step 6
5
Measure with Digital Multimeter (DMM) voltage between the EVAP canister purge valve control circuit and the ECM housing.
Is the voltage within the specified range?
2.6-4.6V
Go to step 9
Go to step 10
6
Connect a test lamp between the ignition 1 voltage circuit of the EVAP canister purge valve and the ECM housing.
Is the control lamp on?
-
Go to step 7
Go to step 8
7
  1. Switch off the ignition.
  2. Disconnect the ECM
  3. Test the EVAP canister purge valve control circuit for a short to ground.
Fault found and corrected?
-
Go to step 11
Go to step 10
8
  1. Repair the short to ground in the ignition 1 voltage circuit of the EVAP canister purge valve.
  2. Replace fuse.
Repair completed?
-
Go to step 11
-
9
Replace canister purge valve.
Has the replacement been made?
-
Go to step 11
-
10
Replace the ECM.
Has the replacement been made?
-
Go to step 11
-
11
  1. Clear the DTCs with a scan tool.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 2
Go to step 12
12
Check for additional DTCs set.
Are there any DTCs that have not yet been diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code (DTC) P0459




EVAP canister purge valve control circuit high voltage




Circuit Description


EVAP canister purge valve (SUPS) diverts fuel vapors from the EVAP canister to the intake manifold. The EVAP canister purge valve is a pulse width modulated signal controlled valve (PWM). The ignition voltage is transmitted directly to the EVAP canister purge valve. The ECM controls the valve by grounding the control circuit through a semiconductor device, the so-called. drivers. The device is equipped with a feedback circuit that increases the voltage. The ECM can detect an open control circuit, a short to ground, or a short to voltage by monitoring the feedback voltage.

Conditions for setting the DTC.


  • The integral controller checks the current and voltage of the output stage.
  • Battery voltage from 9.039V to 25.898V.
  • PWM (pulse width modulation) EVAP canister purge opening between 7.8125% and 98.8125%.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


  • If the fault is intermittent, move the appropriate harnesses and connectors while the engine is running while monitoring the condition of the corresponding component circuit with a scan tool. Circuit status parameter changes from OK (Correctly) or Indeterminate (Undefined) to Fault (out of order), if the condition is associated with a circuit or connector. Control Module Information (ODM) is in the module's data list.
  • For the instability of the condition, see «Intermittent faults".

DTC P0459 - EVAP Canister Purge Valve Control Circuit High Voltage



Step Operation Values Yes No
1
Have you performed a diagnostic system check?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Start the engine.
  2. Check the DTC data with a scan tool.
Did the DTC indicate a failure of this ignition?
-
Go to step 4
Go to step 3
3
  1. Examine the failure log data for this DTC.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 4
Go to «Diagnostic Information»
4
  1. Switch off the ignition.
  2. Disconnect the EVAP canister purge valve harness connector.
  3. Turn on the ignition.
  4. Connect a test lamp between the EVAP canister purge valve control circuit and the ECM housing.
Is the control lamp on?
-
Go to step 5
Go to step 6
5
Test the EVAP purge valve control circuit for a short to voltage.
Fault found and corrected?
-
Go to step 10
Go to step 7
6
Check the EVAP canister purge valve for short-circuited contacts and tight connections.
Fault found and corrected?
-
Go to step 10
Go to step 8
7
Check for a short on the terminal and check that the ECM connections are secure.
Fault found and corrected?
-
Go to step 10
Go to step 9
8
Replace canister purge valve.
Has the replacement been made?
-
Go to step 10
-
9
Replace the ECM.
Has the replacement been made?
-
Go to step 10
-
10
  1. Clear the DTCs with a scan tool.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 2
Go to step 11
11
Check for additional DTCs set.
Are there any DTCs that have not yet been diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic Trouble code P0461




Performance of fuel level sensor 1




Circuit Description


The ECM uses the signal from the fuel level sensor to calculate the expected vapor pressure in the fuel system. The vapor pressure changes as the fuel level changes. The fuel level signal is also used to determine if the fuel level is too high or too low to detect problems with the EVAP system. This DTC indicates an unchanged fuel level.

Conditions for Running the DTC


  • engine running
  • Battery voltage from 11 V to 16 V.
  • No vehicle speed sensor error.
  • The difference between the calculated fuel consumption and the measured fuel level is greater than 1 litre.

Conditions for setting the DTC.


  • The change in fuel level after refueling is less than 1 litre.

Action Taken When the DTC Sets


  • The malfunction indicator lamp lights up.
  • The ECM records operating conditions at the time a fault is detected. This information is stored in fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The MIL will turn off after 3 consecutive ignition cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.

Diagnostic Information


An intermittent fault can be caused by a loose connection, frayed insulation, or a broken wire under the rubber insulation.
Check for a loose connection or damaged ECM harness. Check the fuel level circuit terminal for the following:
  • Terminal connection.
  • Locks malfunction.
  • Deformity.
  • Terminal damage.
  • Weak connection of terminals with wires.
  • Harness damage

DTC P0461 - Fuel Level Sensor 1 Performance



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Connect the scan tool to the diagnostic terminal.
  2. Start the engine and drive according to the specified distance.
Does any of the DTCs: P0462 or P0463 set?
-
Jump to the appropriate DTC table
Go to step 3
3
  1. Switch off the ignition.
  2. Disconnect the fuel pump connector.
  3. Turn on the ignition.
  4. Using a voltmeter, measure the signal voltage of the fuel level sensor on track 3 of the fuel level sensor connector.
Is the measured voltage within the specified range?
4-5 V
Go to step 4
Go to step 5
4
  1. Disconnect the controller of the electronic engine management system (ECM).
  2. Test the fuel level sensor ground circuit for an open between track 2 of the fuel level sensor connector and track 76 of the ECM. Troubleshoot if necessary.
Has the renovation been completed?
-
Go to step 10
Go to step 6
5
Using a voltmeter, measure the voltage at ECM connector J1 track 76 by reversing the ECM connector.
Is the measured voltage within the specified range?
4-5 V
Go to step 8
Go to step 9
6
  1. Remove the fuel pump from the fuel tank.
  2. Reconnect the fuel pump connector.
  3. Turn on the ignition.
  4. Monitor the fuel level sensor parameter on the scan tool by moving the fuel level sensor float from empty to full.
  5. Repeat the procedure 4 times.
Moving the float decreases/increases the value of the fuel level sensor on the scan tool?
-
Go to «Diagnostic Information»
Go to step 7
7
  1. Switch off the ignition.
  2. Replace fuel pump assembly.
Has the renovation been completed?
-
Go to step 10
-
8
  1. Switch off the ignition.
  2. Disconnect the ECM connector.
  3. Test the fuel level sensor signal circuit for an open or short to ground between terminal 36 and terminal 3 of the fuel pump harness connector. Troubleshoot if necessary.
Has the renovation been completed?
-
Go to step 10
-
9
  1. Switch off the ignition.
  2. Replace the ECM.
Has the renovation been completed?
-
Go to step 10
-
10
  1. Using a scan tool, clear the DTCs.
  2. Start the engine and let it idle at normal operating temperature.
  3. Drive to set DTCs as indicated in the help text.
Does the scan tool report this diagnostic as passed and passed?
-
Go to step 11
Go to step 2
11
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic Trouble code P0462




Low voltage in the fuel level sensor 1 circuit




Circuit Description


The ECM uses the fuel level input from the fuel level sensor to calculate the expected vapor pressure in the fuel system. The vapor pressure changes as the fuel level changes. The vapor pressure is of great importance in determining the correct operation of the EVAP. The fuel level sensor is also used to determine if the fuel level is too high or too low to accurately detect fuel system problems. The DTC identifies a stuck fuel level transmitter.

Conditions for Running the DTC


  • engine running
  • Battery voltage from 11 V to 16 V.
  • No vehicle speed sensor error.
  • The difference between the calculated fuel consumption and the measured fuel level is greater than 1 litre.

Conditions for setting the DTC.


  • The fuel level signal in the fuel tank is less than 0.25 V.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


Inspect the harness connectors for loose terminals, poor connections, faulty locks, bent or damaged terminals, or loose terminal-to-wire connections.
Inspect the wiring harness for damage.
A clogged fuel level sensor can cause a DTC to set. If DTC P0462 cannot be duplicated, the information included in the status buffer may be useful in determining the vehicle's operating conditions at the time the DTC was first set.

DTC P0462 - Fuel Level Sensor 1 Circuit Low Voltage



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Turn the ignition key to the ON position.
  2. Install the diagnostic tool.
  3. Travel according to the condition of the status record buffer as specified.
Is the diagnostic trouble code P0462 installed?
-
Go to step 3
Go to «Diagnostic Information»
3
  1. Disconnect the fuel sensor electrical connector from the fuel pump.
  2. Using a digital voltmeter (DVM) measure the voltage in the signal circuit at pin 3.
Is the measured voltage within the specified range?
0.2-4.8V
Go to step 4
Go to step 6
4
Check for a secure connection to "weight" fuel tank and repair if necessary.
Repair needed?
-
Go to step 11
Go to step 5
5
  1. Remove the fuel gauge from the fuel tank
  2. Reconnect fuel sensor connector
  3. Monitor the fuel level sensor parameter on the scan tool when moving the fuel level sensor float from empty to full position.
  4. Repeat the procedure several times.
Does the value of the fuel gauge on the scan tool gradually increase and then decrease as the float is moved?
-
Go to «Diagnostic Information»
Go to step 8
6
Check the fuel level sensor circuit for an open or short to "weight" and eliminate if necessary.
Is repair required?
-
Go to step 7
Go to step 9
7
Repair open or short circuit with "weight" in the fuel level sensor circuit between the harness connector and the fuel level sensor.
Has the renovation been completed?
-
Go to step 11
-
8
Remove fuel sensor assembly
Is the replacement finished?
-
Go to step 11
-
9
  1. Connect fuel sensor connector
  2. Disconnect the engine control module connector (ECM).
  3. Using a digital voltmeter (DVM), measure the voltage in the signal circuit at pin 36.
Are the voltmeter readings within the specified values?
0.2-4.8V
Go to step 10
Go to Section 9E, Instrumentation/Driver Information
10
Replace the ECM.
Has the renovation been completed?
-
Go to step 11
-
11
  1. Using a scan tool, clear the DTCs.
  2. Start the engine and let it idle at normal operating temperature.
  3. Drive to set DTCs as indicated in the help text.
Does the scan tool report this diagnostic as passed and passed?
-
Go to step 12
Go to step 2
12
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic Trouble code P0463




High voltage in the fuel level sensor 1 circuit




Circuit Description


The ECM uses the fuel level input from the fuel level sensor to calculate the expected vapor pressure in the fuel system. The vapor pressure changes as the fuel level changes. The vapor pressure is of great importance in determining the correct operation of the EVAP. The fuel level sensor is also used to determine if the fuel level is too high or too low to accurately detect fuel system problems. The DTC identifies a stuck fuel level transmitter.

Conditions for Running the DTC


  • engine running
  • Battery voltage from 11 V to 16 V.
  • No vehicle speed sensor error.
  • The difference between the calculated fuel consumption and the measured fuel level is greater than 1 litre.

Conditions for setting the DTC.


  • The fuel level signal in the fuel tank is greater than 4.2 V.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


Inspect the harness connectors for loose terminals, poor connections, faulty locks, bent or damaged terminals, or loose terminal-to-wire connections.
Inspect the wiring harness for damage.
A clogged fuel level sensor can cause a DTC to set. If DTC P0463 cannot be duplicated, then the information included in the freeze frame may be useful in determining the operating conditions of the vehicle when the DTC is set for the first time.

DTC P0463 - Fuel Level Sensor 1 Circuit High Voltage



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Turn the ignition key to the ON position.
  2. Install the diagnostic tool.
  3. Travel according to the condition of the status record buffer as specified.
Is the diagnostic trouble code P0463 installed?
-
Go to step 3
Go to «Diagnostic Information»
3
  1. Disconnect the fuel sensor electrical connector from the fuel pump.
  2. Using a digital voltmeter (DVM) measure the voltage in the signal circuit at pin 3.
Is the measured voltage within the specified range?
0.2-4.8V
Go to step 4
Go to step 6
4
Check for a secure connection to "weight" fuel tank and repair if necessary.
Repair needed?
-
Go to step 11
Go to step 5
5
  1. Remove the fuel gauge from the fuel tank
  2. Reconnect the fuel pump electrical connector.
  3. Monitor the fuel level sensor parameter on the scan tool when moving the fuel level sensor float from empty to full position.
  4. Repeat the procedure several times.
Does the value of the fuel gauge on the scan tool gradually increase and then decrease as the float is moved?
-
Go to «Diagnostic Information»
Go to step 8
6
Check the fuel level sensor circuit for an open or short to "weight", troubleshoot if necessary.
Is repair required?
-
Go to step 7
Go to step 9
7
Repair the open or short to battery in the fuel level sensor circuit between the sensor harness connector and the fuel level sensor.
Has the renovation been completed?
-
Go to step 11
-
8
Remove fuel sensor assembly
Is the replacement finished?
-
Go to step 11
-
9
  1. Connect fuel sensor connector
  2. Disconnect the engine control module connector (ECM).
  3. Using a digital voltmeter (DVM), measure the voltage in the signal circuit at pin 36.
Are the voltmeter readings within the specified values?
0.2-4.8V
Go to step 10
Go to Section 9E, Instrumentation/Driver Information
10
Replace the ECM.
Has the renovation been completed?
-
Go to step 11
-
11
  1. Using a scan tool, clear the DTCs.
  2. Start the engine and let it idle at normal operating temperature.
  3. Drive to set DTCs as indicated in the help text.
Does the scan tool report this diagnostic as passed and passed?
-
Go to step 12
Go to step 2
12
Check for additional DTCs set.
Are DTCs displayed that were not diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic trouble code (DTC) P0489




EGR Solenoid Control Circuit Low Voltage (EGR)




Circuit Description


The exhaust gas recirculation system is used to reduce nitrogen oxide emissions (NOx), caused by high combustion temperatures. It does this by feeding a small amount of exhaust gases back into the combustion chamber. When the air-fuel mixture is combined with the exhaust gases, the combustion temperature decreases.
This system uses an electric EGR valve. The electric valve of the exhaust gas recirculation system is designed to accurately supply exhaust gases to the engine without the use of vacuum in the intake manifold. The valve controls the flow of exhaust gases to the intake manifold from the exhaust manifold through the throttle using a needle controlled by the ECM. The ECM controls the needle position using the throttle position sensor inputs and the intake manifold absolute pressure sensor. The ECM then commands the EGR valve to operate as needed by controlling the ignition signal through the ECM. This can be monitored on a scan tool as the desired EGR position.
The ECM controls the result of its command execution by the response signal. With a reference signal of 5 V and a short circuit "masses" on the EGR valve, a signal representing the position of the EGR valve needle is output to the ECM. This feedback is also monitored on a scan tool and displays the actual position of the EGR valve needle. The actual position of the EGR valve must always be within the specified or desired position.

Conditions for setting the DTC.


  • The integral controller checks the current and voltage of the output stage.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

DTC P0489 - EGR Solenoid Valve Control Circuit Low Voltage (EGR)



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the EGR solenoid connector.
  3. Check for an open or short to ground in the wire between EGR terminal E and main relay terminal 87.
  4. Check the wire between the EGR valve connector terminal A and the ECM connector J2 terminal 37 for an open or short to ground.
Fault found?
-
Go to step 3
Go to step 4
3
  1. Repair wire or connector terminal if necessary.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
4
  1. Connect the EGR solenoid connector.
  2. Turn the ignition key to the ON position.
  3. With a digital voltmeter (DVM) Measure the voltage between the EGR connector terminal A and the positive battery terminal.
Is the measured voltage within the specified value?
12~13V
Go to step 6
Go to step 5
5
  1. Replace EGR valve.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
6
  1. Replace the ECM.
  2. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-

Diagnostic trouble code (DTC) P0490




EGR Solenoid Control Circuit High Voltage (EGR)




Circuit Description


The exhaust gas recirculation system is used to reduce nitrogen oxide emissions (NOx), caused by high combustion temperatures. It does this by feeding a small amount of exhaust gases back into the combustion chamber. When the air-fuel mixture is combined with the exhaust gases, the combustion temperature decreases.
This system uses an electric EGR valve. The electric valve of the exhaust gas recirculation system is designed to accurately supply exhaust gases to the engine without the use of vacuum in the intake manifold. The valve controls the flow of exhaust gases to the intake manifold from the exhaust manifold through the throttle using a needle controlled by the ECM. The ECM controls the needle position using the throttle position sensor inputs and the intake manifold absolute pressure sensor. The ECM then commands the EGR valve to operate as needed by controlling the ignition signal through the ECM. This can be monitored on a scan tool as the desired EGR position.
The ECM controls the result of its command execution by the response signal. With a reference signal of 5 V and a short circuit "masses" on the EGR valve, a signal representing the position of the EGR valve needle is output to the ECM. This feedback is also monitored on a scan tool and displays the actual position of the EGR valve needle. The actual position of the EGR valve must always be within the specified or desired position.

Conditions for setting the DTC.


  • The integral controller checks the current and voltage of the output stage.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

DTC P0490 - EGR Solenoid Control Circuit High Voltage (EGR)



Step Operation Values Yes No
1
Perform a diagnostic system check.
System check completed?
-
Go to step 2
Go to item «Diagnostic system check".
2
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the EGR solenoid connector.
  3. Check for a short to battery in the wire between terminal E of the EGR connector and terminal 87 of the main relay.
  4. Check the wire between the EGR valve connector terminal A and the ECM connector J2 terminal 37 for an open or short to battery voltage.
Fault found?
-
Go to step 3
Go to step 4
3
  1. Repair wire or connector terminal if necessary.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
4
  1. Connect the EGR solenoid connector.
  2. Turn the ignition key to the ON position.
  3. With a digital voltmeter (DVM) Measure the voltage between the EGR connector terminal A and the positive battery terminal.
Is the measured voltage within the specified value?
12~13V
Go to step 6
Go to step 5
5
  1. Replace EGR valve.
  2. Using a scan tool, clear the DTCs.
  3. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-
6
  1. Replace the ECM.
  2. Perform a diagnostic system check.
Has the renovation been completed?
-
System OK
-

Diagnostic Trouble code P0506




Low idle speed




Circuit Description


Throttle actuator motor (TAC) is a DC motor and is part of the throttle body assembly. Throttle actuator motor (TAC) moves the throttle. The ECM controls the throttle actuator motor (TAC) based on throttle position sensor input. The ECM controls the idle speed based on various input signals. The ECM sends a command to the throttle actuator motor (TAC) about opening or closing the throttle to maintain the desired idle speed. If the ECM detects that the actual and desired idle speeds are out of range, a DTC will set.

Conditions for Running the DTC


  • Mass air flow at idle is maximum.
  • Engine load is less than 35%.
  • The engine coolant temperature is over 70°C.
  • The intake air temperature is greater than -7.5°C.
  • Vehicle speed 0 km/h.

Conditions for setting the DTC.


  • The difference between the desired idle speed and the actual speed is greater than 100 rpm.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


For the instability of the condition, see «Intermittent faults".

DTC P0506 - Low Idle Speed



Step Operation Values Yes No
1
Have you performed a diagnostic system check?
-
Go to step 2
Go to item «Diagnostic system check".
2
Are DTCs associated with the throttle actuator system set? (TAC), throttle position sensor (TP) or accelerator pedal position sensor (APP)?
-
Jump to the appropriate DTC table
Go to step 3
3
  1. Start the engine.
  2. Command scan tool to increase engine speed to 1,400 RPM, decrease to 600 RPM, increase to 1,400 RPM, then exit (from command mode).
Does the actual engine speed match the set value for each command?
100 rpm
Go to step 4
Go to step 5
4
  1. Examine the failure log data for this DTC.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 5
See «Intermittent faults".
5
Is the engine speed greater than the set speed?
Fault found and corrected?
100 rpm
Go to step 6
Go to step 7
6
  1. Measure or check the following conditions:
    • Engine for vacuum leaks.
    • Throttle Proper Operation - This DTC is set by a throttle that is not closing properly.
    • Crankcase ventilation system for correct operation.
  2. Restore the state as needed.
Repair completed?
-
Go to step 8
-
7
  1. Check the following:
    • Excessive deposits in the throttle body.
    • Parasitic load on the engine - For example, the condition of the gearbox, belt driven accessories.
  2. Restore the state as needed.
Repair completed?
-
Go to step 8
-
8
  1. Clear the DTCs with a scan tool.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 2
Go to step 9
9
Check for additional DTCs set.
Are there any DTCs that have not yet been diagnosed?
-
Jump to the appropriate DTC table
System OK

Diagnostic Trouble code P0507




High idle speed




Circuit Description


Throttle actuator motor (TAC) is a DC motor and is part of the throttle body assembly. Throttle actuator motor (TAC) moves the throttle. The ECM controls the throttle actuator motor (TAC) based on throttle position sensor input. The ECM controls the idle speed based on various input signals. The ECM sends a command to the throttle actuator motor (TAC) about opening or closing the throttle to maintain the desired idle speed. If the ECM detects that the actual and desired idle speeds are out of range, a DTC will set.

Conditions for Running the DTC


  • Mass airflow at idle is minimal.
  • The engine coolant temperature is over 70°C.
  • The intake air temperature is greater than -7.5°C.
  • Vehicle speed 0 km/h.

Conditions for setting the DTC.


  • The difference between the desired idle speed and the actual speed is less than -200 rpm.
  • Fuel cut-off more than 3 times.

Action Taken When the DTC Sets


  • The MIL will come on after 3 confirmed driving cycles.
  • The controller records the operating conditions at the time a fault is detected. This information is stored in the status record buffer and fault logs.
  • An archive of diagnostic trouble codes is stored.

Conditions for Clearing the DTC/MIL


  • The Malfunction Indicator Lamp (MIL) will turn off after three or four consecutive driving cycles in which no fault is detected by the diagnostics.
  • The DTC history is cleared after 40 consecutive heating cycles without faults.
  • The DTC can be cleared with a scan tool.
  • Power off the ECM for 10 seconds.

Diagnostic Information


For the instability of the condition, see «Intermittent faults".

DTC P0507 - High Idle Speed



Step Operation Values Yes No
1
Have you performed a diagnostic system check?
-
Go to step 2
Go to item «Diagnostic system check".
2
Are DTCs associated with the throttle actuator system set? (TAC), throttle position sensor (TP) or accelerator pedal position sensor (APP)?
-
Jump to the appropriate DTC table
Go to step 3
3
  1. Start the engine.
  2. Command scan tool to increase engine speed to 1,400 RPM, decrease to 600 RPM, increase to 1,400 RPM, then exit (from command mode).
Does the actual engine speed match the set value for each command?
100 rpm
Go to step 4
Go to step 5
4
  1. Examine the failure log data for this DTC.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 5
See «Intermittent faults".
5
Is the engine speed greater than the set speed?
Fault found and corrected?
100 rpm
Go to step 6
Go to step 7
6
  1. Measure or check the following conditions:
    • Engine for vacuum leaks.
    • Throttle Proper Operation - This DTC is set by a throttle that is not closing properly.
    • Crankcase ventilation system for correct operation.
  2. Restore the state as needed.
Repair completed?
-
Go to step 8
-
7
  1. Check the following:
    • Excessive deposits in the throttle body.
    • Parasitic load on the engine - For example, the condition of the gearbox, belt driven accessories.
  2. Restore the state as needed.
Repair completed?
-
Go to step 8
-
8
  1. Clear the DTCs with a scan tool.
  2. Switch off the ignition for 30 seconds.
  3. Start the engine.
  4. Create conditions for the vehicle to set the DTC. You can also create conditions for the vehicle that have been observed based on status records/fault logs.
Did the DTC indicate a misfire?
-
Go to step 2
Go to step 9
9
Check for additional DTCs set.
Are there any DTCs that have not yet been diagnosed?
-
Jump to the appropriate DTC table
System OK

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Previous articles
Captiva 1: Control and power systems
Next articles

Definitions of types of diagnostic trouble codes
Fuel system diagnostics
Diagnostics of the engine management system
Location of components of engine management systems
Blocks of electrical connectors
The electrical circuit of the controller of the engine management system
Table of special tools
Dependence of resistance of sensors on temperature
Tightening torques for threaded connections
General terms of the on-board diagnostic system
Diagnostic Trouble Codes (DTCs) (end)
Diagnostics of signs of malfunctions of the engine management system
Relieving pressure in the fuel supply system
Fuel pressure check
Removal and installation of the fuel tank
Fuel pump assembly
Fuel level sensor
Fuel filter
Fuel rail and injectors
Coolant temperature sensor (ECT)


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Captiva 1 (2006-2018) 
  • Manual
  • Before leaving
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  • Engine 2.0 l (diesel)
  • Engine device
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  • Engine electrical equipment
  • Control and power systems
  • Exhaust system
  • Engine FAM II 2.4D
  • Engine device
  • Troubleshooting
  • Engine repair
  • Cooling system
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  • Engine HFV6 3.2L
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  • Automatic gearbox - device
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