WIPER PARK SWITCH FAILURE
For a complete wiring diagram Refer to Section 8W
- When Monitored:
With the Wipers on (any speed).
- Set Condition:
BCM fails to detect a park signal from the wiper motor for 8 consecutive seconds.
| Possible Causes |
| MULTIFUNCTION SWITCH |
| FRONT WIPER MOTOR GROUND CIRCUIT OPEN |
| FRONT WIPER MOTOR LOW DRIVER CIRCUIT OPEN |
| FRONT WIPER MOTOR |
| FUSED IGNITION SWITCH OUTPUT CIRCUIT |
Diagnostic Test
1.INTERMITTENT CONDITIONDoes the scan tool display: WIPER PARK SWITCH FAILURE?
Yes
- Go To2
No
- The condition is not present at this time. Monitor scan tool parameters while wiggling the related wire harness. Refer to any Technical Service Bulletins that may apply. Visually inspect the related wiring harness and connector terminals.
- Perform BODY VERIFICATION TEST - VER 1.
2.FRONT WIPER PARK SWITCH SENSE CIRCUIT SHORT TO VOLTAGE
Is there any voltage present?
Yes
- Repair the Wiper Park Switch Sense circuit for a short to voltage.
- Perform BODY VERIFICATION TEST - VER 1.
No
- Go To3
3.FRONT WIPER PARK SWITCH SENSE CIRCUIT OPEN
Is the resistance below 5.0 ohms?
Yes
- Go To4
No
- Repair the Front Wiper Park Switch Sense circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1.
4.FRONT WIPER PARK SWITCH SENSE CIRCUIT SHORT TO GROUND
Is the resistance below 100.0 ohms?
Yes
- Repair the Front Wiper Park Switch Sense circuit for a short to ground.
- Perform BODY VERIFICATION TEST - VER 1.
No
- Go To5
5.GROUND CIRCUIT OPEN
Does the test light illuminate brightly?
Yes
- Go To6
No
- Repair the Wiper Motor Ground circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1.
6.WIPER MOTOR
Did the Wiper Park Switch Input change state when connected to ground?
Yes
- Replace the Wiper Motor.
- Perform BODY VERIFICATION TEST - VER 1.
No
- Replace the Body Control Module.
- Perform BODY VERIFICATION TEST - VER 1.