2. Read the trouble codes stored in the memory of the control unit. If other fault codes are stored in addition to code P0315, carry out the necessary repairs to defective components.
Note: code P0315 means that "education" crankshaft position measurement system has not been carried out.
3. Select a mode on the scanner "Learning the crankshaft position measurement system".
4. Do the following as instructed by the scanner:
- A) Accelerate the engine at wide open throttle.
- b) Release the accelerator pedal when the fuel cut occurs.
- V) Read the engine speed at the time of fuel cutoff.
- G) The engine must not exceed the RPM specified for that engine.
- d) If the speed is greater than the permissible value, close the throttle valve until the fuel cut-off point is reached.
- e) Block drive wheels.
- and) Move the automatic transmission selector to position "R".
- h) Turn on the ignition.
- And) Depress and hold the main brake pedal.
- To) Run the engine to idle.
- l) Turn off the air conditioner.
- m) The scanner processes the signals of certain sensors to determine whether the mode of operation corresponds to the conditions of the procedure "learning". The scanner highlights only the condition that prohibits the procedure (the operation of the crankshaft and camshaft position sensors and the thermal state of the engine).
5. Allow the procedure "learning". Attention: during the procedure "learning" close the throttle immediately when starting to reset the engine speed. Now the control of the engine passes to the operator and the engine will respond to the throttle position after the procedure is completed.
6. Accelerate the engine at wide open throttle.
7. Close the damper after the fuel cutoff has started.
8. Continue testing.
9. The scanner will show the status "learning" (procedure done or not).
10. After the successful completion of the procedure "learning" turn off the ignition for 30 seconds.
11. "Education" crankshaft position measurement systems must be carried out (regardless of the presence or absence of code P0315) at:
- replacing the crankshaft position sensor;
- engine replacement;
- replacing the ECM;
- replacement of harmonic balancing;
- replacement of the crankshaft;
- any engine repair that requires the removal of the crankshaft position sensor.