Symptoms - Wiper and Washer System
Important: The following steps must be completed before using the symptom tables.
1. Perform a post-repair diagnostic check after completing the diagnostic procedure in Section 9V, "body controller", "Vehicle Fault Code Information", before using the symptom tables, to make sure that the following conditions are true.
- There are no fault codes.
- The controllers can communicate over a serial line.
2. View system operation to familiarize yourself with the functions of the system. See paragraph "Description and operation of the wiper and washer system" in this section.
Visual inspection / physical control
- Inspect aftermarket equipment that may affect the operation of the wiper/washer system. Check additional aftermarket systems.
- Inspect easily accessible and visible parts of the system for obvious signs of damage or conditions that could lead to a malfunction.
- Before proceeding with the diagnosis of the electrical part of the system, make sure that all mechanical components are in good condition.
Intermittent fault
Faulty electrical connections or wiring can cause intermittent faults. See paragraph "Checking for intermittent faults and poor contact in the connectors" in section 9A, "Body Wiring Systems".
Windshield washers not working
| Step | Operation | Values | Yes | No |
| 1 |
Has the vehicle system diagnostic check been completed?
Has fuse F17 blown?
|
-
|
Go to Step 2
|
Check the vehicle with a diagnostic tool.
|
| 2 |
Check for faulty windshield washers.
Do the windshield washers operate as described?
|
-
|
Go to Step 3
|
|
| 3 |
Does the control lamp light up?
|
-
|
Go to Step 4
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Go to Step 8
|
| 4 |
Does the control lamp light up?
|
-
|
Go to Step 5
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Go to Step 7
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| 5 |
Does the control lamp light up?
|
-
|
Go to Step 9
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Go to Step 6
|
| 6 |
Does the control lamp light up?
|
-
|
Go to Step 10
|
Go to Step 11
|
| 7 |
Has the cause been found and fixed?
|
-
|
Go to Step 14
|
Go to Step 10
|
| 8 |
Has the cause been found and fixed?
|
-
|
Go to Step 14
|
Go to Step 10
|
| 9 |
Inspect the windshield washer pump for poor contact.
Has the cause been found and fixed?
|
-
|
Go to Step 14
|
Go to Step 12
|
| 10 |
Inspect the windshield wiper/washer switch for poor contact.
Has the cause been found and fixed?
|
-
|
Go to Step 14
|
Go to Step 13
|
| 11 |
Repair the open or high resistance in the ground circuit.
Has the repair been completed?
|
-
|
Go to Step 14
|
-
|
| 12 |
Replace the windshield washer fluid pump.
Has the replacement been completed?
|
-
|
Go to Step 14
|
-
|
| 13 |
Replace the windshield wiper/washer switch.
Has the replacement been completed?
|
-
|
Go to Step 14
|
-
|
| 14 |
Operate the system to check if the problem has been fixed.
Has the cause been removed?
|
-
|
System OK
|
Go to Step 2
|
Windshield wipers always on
| Step | Operation | Values | Yes | No |
| 1 |
Has the vehicle system diagnostic check been completed?
Has fuse F17 blown?
|
-
|
Go to Step 2
|
Check the vehicle with a diagnostic tool.
|
| 2 |
Windshield wipers off?
|
-
|
Go to Step 3
|
|
| 3 |
Are the rear wipers constantly running?
|
-
|
Go to Step 4
|
Go to Step 7
|
| 4 |
Are the rear wipers off?
|
-
|
Go to Step 5
|
Go to Step 6
|
| 5 |
Does the control lamp light up?
|
-
|
Go to Step 8
|
Go to Step 16
|
| 6 |
Test the rear wiper motor control circuit for a short to voltage.
Has the cause been found and fixed?
|
-
|
Go to Step 20
|
Go to Step 14
|
| 7 |
Front wipers off?
|
-
|
Go to Step 9
|
Go to Step 15
|
| 8 |
Does the control lamp light up?
|
-
|
Go to Step 10
|
Go to Step 12
|
| 9 |
Connect a test lamp between the rear wiper switch pulse delay signal circuit at the harness connector and a good ground.
Does the control lamp light up?
|
-
|
Go to Step 11
|
Go to Step 13
|
| 10 |
Test the signal circuit of the rear wiper switch for a short to voltage.
Has the cause been found and fixed?
|
-
|
Go to Step 20
|
Go to Step 13
|
| 11 |
Test the windshield wiper motor pulse delay signal circuit for a short to voltage.
Has the cause been found and fixed?
|
-
|
Go to Step 20
|
Go to Step 12
|
| 12 |
Check for bad connections at the body controller.
Has the cause been found and fixed?
|
-
|
Go to Step 20
|
Go to Step 19
|
| 13 |
Inspect the windshield wiper/washer switch for poor contact.
Has the cause been found and fixed?
|
-
|
Go to Step 20
|
Go to Step 18
|
| 14 |
Inspect the rear wiper motor for poor contact.
Has the cause been found and fixed?
|
-
|
Go to Step 20
|
Go to Step 17
|
| 15 |
Repair the short to voltage on the high speed circuit or the windshield wiper motor low speed circuit.
Has the repair been completed?
|
-
|
Go to Step 20
|
-
|
| 16 |
Replace the rear wiper relay.
Has the replacement been completed?
|
-
|
Go to Step 20
|
-
|
| 17 |
Replace the rear wiper motor.
Has the replacement been completed?
|
-
|
Go to Step 20
|
-
|
| 18 |
Replace the windshield wiper/washer switch.
Has the replacement been completed?
|
-
|
Go to Step 20
|
-
|
| 19 |
Replace BCM. See Section 9B, "body controller".
Has the replacement been completed?
|
-
|
Go to Step 20
|
-
|
| 20 |
Operate the system to check if the problem has been fixed.
Has the cause been removed?
|
-
|
System OK
|
Go to Step 2
|
Windshield wipers not working - in one or more modes (front wipers)
| Step | Operation | Values | Yes | No |
| 1 |
Has the vehicle system diagnostic check been completed?
|
-
|
Go to Step 2
|
Check the vehicle with a diagnostic tool.
|
| 2 |
Is the windshield wiper system working properly?
|
-
|
Go to Step 3
|
|
| 3 |
Does the control lamp light up?
|
-
|
Go to Step 4
|
Go to Step 5
|
| 4 |
Inspect the harness connector at the windshield wiper/washer switch for loose connections.
Has the cause been found and fixed?
|
-
|
Go to Step 7
|
Go to Step 6
|
| 5 |
Repair the open or short to ground in the auxiliary supply voltage circuit.
Has the repair been completed?
|
-
|
Go to Step 7
|
-
|
| 6 |
Replace the windshield wiper/washer switch.
Has the replacement been completed?
|
-
|
Go to Step 7
|
-
|
| 7 |
Operate the system to check if the problem has been fixed.
Has the cause been removed?
|
-
|
System OK
|
Go to Step 2
|
Windshield wipers not working - in one or more modes (front wipers)
Diagnostic Recommendations
Wash Mode is defined in this diagnostic as when the wiper switch is in the OFF position and only the windshield washer switch is pressed. When the washer switch is turned on with the wipers off, the wipers should wipe the windshield 3-5 times and return to the park position.
Description of the test
The numbers below represent the steps in the diagnostic table.
2. At this stage, it is determined which functions of the wipers do not work. The windshield wipers must operate in all active positions of the windshield wiper switch. When the wiper switch is OFF and only the windshield washer switch is pressed, the wipers should wipe the windshield 3-5 times and return to the park position.
6. At this stage, it is determined which circuits or devices can be the cause of the malfunction. If the washing and parking modes, as well as the periodic activation mode, do not work, the cause of the malfunction may lie in the signal circuit "drizzle/off/slow" on the windshield wiper switch and related components. When the wipers operate in park mode but do not operate in either intermittent or washer mode, check the auxiliary voltage circuit at the front wiper relay (FRT WIPER) and related nodes.
- This step is performed when the wipers are not wiping the windshield when only the washer switch is activated.
- This step is performed when the wipers continue to operate in all wipe modes but do not return to the park position all the way down. If this fault is present in intermittent operation, the wipers will usually not return to their lowest position. Instead, they stop at a random position on the windshield between periodic sweeps of the windshield wipers. Alternatively, if the wipers are running at high or low speed, they will stop midway when the wiper switch is turned OFF.
Windshield wipers not working - in one or more modes (front wipers)
| Step | Operation | Values | Yes | No |
| 1 |
Has the vehicle system diagnostic check been completed?
Has fuse F17 blown?
|
-
|
Go to Step 2
|
Check the vehicle with a diagnostic tool.
|
| 2 |
Are the windshield wipers working properly?
|
-
|
Go to Step 3
|
|
| 3 |
Windshield wipers not working at all?
|
-
|
Go to Step 10
|
Go to Step 4
|
| 4 |
Windshield wipers not working in all modes except high speed?
|
-
|
Go to Step 11
|
Go to Step 5
|
| 5 |
Windshield wipers not working in intermittent mode?
|
-
|
Go to Step 6
|
Go to Step 7
|
| 6 |
In addition to intermittent operation, do the wipers not operate in one or both of the following modes?
|
-
|
Go to Step 17
|
Go to Step 14
|
| 7 |
Important: When only the windshield washer is activated with the wiper switch off, the wipers should wipe the windshield 3-5 times and return to the park position. Windshield wipers do not work only in washer mode. |
-
|
Go to Step 12
|
Go to Step 8
|
| 8 |
Windshield wipers not working only in parking mode?
|
-
|
Go to Step 13
|
Go to Step 9
|
| 9 |
Windshield wipers do not work only in high speed mode.
Does the control lamp light up?
|
-
|
Go to Step 24
|
Go to Step 22
|
| 10 |
The windshield wipers don't work at all.
Does the control lamp light up?
|
-
|
Go to Step 16
|
Go to Step 29
|
| 11 |
The windshield wipers only operate at high speed.
Does the control lamp light up?
|
-
|
Go to Step 24
|
Go to Step 20
|
| 12 |
The windshield wipers do not work only in washer mode.
Does the control lamp light up?
|
-
|
Go to Step 25
|
Go to Step 21
|
| 13 |
Windshield wipers do not work only in parking mode.
Is the circuit broken?
|
-
|
Go to Step 15
|
Go to Step 24
|
| 14 |
Windshield wipers do not work only in intermittent mode.
Does the control lamp light up in all intermittent positions?
|
-
|
Go to Step 25
|
Go to Step 23
|
| 15 |
Does the control lamp light up?
|
-
|
Go to Step 33
|
Go to Step 30
|
| 16 |
Does the control lamp light up in both positions, both for high and low speed?
|
-
|
Go to Step 24
|
Go to Step 26
|
| 17 |
Does the control lamp light up?
|
-
|
Go to Step 18
|
Go to Step 28
|
| 18 |
Does the control lamp light up?
|
-
|
Go to Step 19
|
Go to Step 27
|
| 19 |
With a test light connected to ground, test the low speed signal circuit at the windshield wiper switch at the switch terminals.
Does the control lamp light up?
|
-
|
Go to Step 33
|
Go to Step 26
|
| 20 |
Check the low speed windshield wiper motor circuit for an open.
Has the cause been found and fixed?
|
-
|
Go to Step 35
|
Go to Step 26
|
| 21 |
Check the windshield washer pump circuit for an open circuit.
Has the cause been found and fixed?
|
-
|
Go to Step 35
|
Go to Step 26
|
| 22 |
Check the windshield wiper motor high speed circuit for an open.
Has the cause been found and fixed?
|
-
|
Go to Step 35
|
Go to Step 26
|
| 23 |
Test the windshield wiper motor pulse delay signal circuit for an open.
Has the cause been found and fixed?
|
-
|
Go to Step 35
|
Go to Step 26
|
| 24 |
Inspect the harness connector at the windshield wiper motor for loose connections.
Has the cause been found and fixed?
|
-
|
Go to Step 35
|
Go to Step 32
|
| 25 |
Check for a poor connection in the body controller wiring harness connector (BCM).
Has the cause been found and fixed?
|
-
|
Go to Step 35
|
Go to Step 34
|
| 26 |
Inspect the harness connector at the windshield wiper/washer switch for loose connections.
Has the cause been found and fixed?
|
-
|
Go to Step 35
|
Go to Step 31
|
| 27 |
Repair the open or high resistance in the windshield wiper switch circuit.
Has the repair been completed?
|
-
|
Go to Step 35
|
-
|
| 28 |
Repair the open or high resistance in the auxiliary supply voltage circuit.
Has the repair been completed?
|
-
|
Go to Step 35
|
-
|
| 29 |
Repair open ground circuit.
Has the repair been completed?
|
-
|
Go to Step 35
|
-
|
| 30 |
Repair the open or high resistance in the windshield wiper motor park signal circuit.
Has the repair been completed?
|
-
|
Go to Step 35
|
-
|
| 31 |
Replace the windshield wiper/washer switch.
Has the replacement been completed?
|
-
|
Go to Step 35
|
-
|
| 32 |
Replace the windshield wiper motor.
Has the replacement been completed?
|
-
|
Go to Step 35
|
-
|
| 33 |
Replace the front wiper relay.
Has the replacement been completed?
|
-
|
Go to Step 35
|
-
|
| 34 |
Replace BCM. See section 9V, "body controller".
Has the replacement been completed?
|
-
|
Go to Step 35
|
-
|
| 35 |
Operate the system to check if the problem has been fixed.
Has the cause been removed?
|
-
|
System OK
|
Go to Step 2
|
Windshield wipers not working - in one or more modes (rear wipers)
Diagnostic Recommendations
Except in wash mode, the rear wiper wipes the rear window at intervals of the delay time. With the rear wiper system on, the time between wipes can be adjusted by selecting one of three delay settings using the windshield wiper switch.
In wash mode, if the rear wiper switch is momentarily turned ON, the rear wiper will wipe the rear window 3-5 times and return to the park position. However, if the rear wiper switch is held in the ON position, the rear wipers will continue to operate until the switch is released.
Although the delay period of both front and rear wipers is controlled by selecting the windshield wiper switch position, the rear wiper delay period is not synchronized with the front wiper delay period.
The rear wiper should stop in the park position whenever it is not in operation. However, if the ignition key is turned to the OFF position while the rear wiper is operating, the wiper will stop at its current position on the glass.
Description of the test
The numbers below represent the steps in the diagnostic table.
2. This step determines if the rear wiper operates normally when only the rear window washer switch is activated. When operating the rear washer switch with the rear wiper OFF, the rear wiper should wipe the glass 3-5 times and return to the park position.
6. This step helps to identify a specific malfunction. The rear wiper park mode may be the only function that does not work. When the rear wiper switch is ON, the rear wiper should stop in the park position between periodic wiper strokes. When the rear wiper switch is OFF, the rear wiper should stop in the park position and remain in the park position until one of the wipe or washer modes is activated.
Windshield wipers not working - in one or more modes (rear wipers)
| Step | Operation | Values | Yes | No |
| 1 |
Has the vehicle system diagnostic check been completed?
|
-
|
Go to Step 2
|
Check the vehicle with a diagnostic tool.
|
| 2 |
Does the rear wiper work?
|
-
|
Go to Step 3
|
Go to Step 5
|
| 3 |
Does the rear wiper work?
|
-
|
Go to Step 4
|
Go to Step 7
|
| 4 |
Important: When the rear wiper does not operate in the washer mode, it only operates in the delayed modes. When the rear wiper is on, it should stop in the park position between periodic wiper strokes. When the rear wiper is turned off, it should return to the park position and remain in this position until one of the wipe or washer modes is turned on again.
Is the rear wiper set in the park position to the proper down position?
|
-
|
Go to Step 9
|
|
| 5 |
Set the rear window washer switch to the on position.
Does the rear window wiper work?
|
-
|
Go to Step 8
|
Go to Step 6
|
| 6 |
Does the control lamp light up?
|
-
|
Go to Step 10
|
Go to Step 20
|
| 7 |
Does the control lamp light up?
|
-
|
Go to Step 17
|
Go to Step 13
|
| 8 |
Does the control lamp light up?
|
-
|
Go to Step 17
|
Go to Step 14
|
| 9 |
With a test light connected to a good ground, test the auxiliary supply voltage circuit at the rear wiper motor.
|
-
|
Go to Step 16
|
Go to Step 19
|
| 10 |
Does the rear wiper work?
|
-
|
Go to Step 24
|
Go to Step 11
|
| 11 |
Does the control lamp light up?
|
-
|
Go to Step 12
|
Go to Step 21
|
| 12 |
Connect a test lamp between the rear wiper motor control circuit and the rear wiper motor ground circuit.
Does the control lamp light up?
|
-
|
Go to Step 16
|
Go to Step 18
|
| 13 |
Test the rear window washer pump control circuit for an open or high resistance.
Is the cause found and fixed?
|
-
|
Go to Step 26
|
Go to Step 15
|
| 14 |
Test the rear wiper switch signal circuit for an open or high resistance.
Has the cause been found and fixed?
|
-
|
Go to Step 26
|
Go to Step 15
|
| 15 |
Inspect the harness connector at the windshield wiper/washer switch for loose connections.
Has the cause been found and fixed?
|
-
|
Go to Step 26
|
Go to Step 22
|
| 16 |
Inspect the wiring harness connector at the rear window wiper motor for loose connections.
Has the cause been found and fixed?
|
-
|
Go to Step 26
|
Go to Step 23
|
| 17 |
Check for a poor connection at the body controller harness connector.
Has the cause been found and fixed?
|
-
|
Go to Step 26
|
Go to Step 25
|
| 18 |
Repair the open or high resistance in the rear window wiper motor ground circuit.
Has the repair been completed?
|
-
|
Go to Step 26
|
-
|
| 19 |
Repair the open or high resistance in the auxiliary voltage circuit between the rear wiper relay terminal block (REAR WIPER) and a wiper motor.
Has the repair been completed?
|
-
|
Go to Step 26
|
-
|
| 20 |
Repair the open or high resistance in the auxiliary supply voltage circuit.
Has the repair been completed?
|
-
|
Go to Step 26
|
-
|
| 21 |
Repair the open or high resistance in the rear wiper motor control circuit.
Has the repair been completed?
|
-
|
Go to Step 26
|
-
|
| 22 |
Replace the windshield wiper/washer switch.
Has the replacement been completed?
|
-
|
Go to Step 26
|
-
|
| 23 |
Replace the rear window wiper motor.
Has the replacement been completed?
|
-
|
Go to Step 26
|
-
|
| 24 |
Replace the rear wiper relay.
Has the replacement been completed?
|
-
|
Go to Step 26
|
-
|
| 25 |
Jump to section 9V, "body controller".
Has the cause been found and fixed?
|
-
|
Go to Step 26
|
-
|
| 26 |
Operate the system to check if the problem has been fixed.
Has the cause been removed?
|
-
|
System OK
|
Go to Step 2
|