Wipers Run Continuously With Ignition On

*WIPERS RUN CONTINUOUSLY WITH IGNITION ON









For a complete Wipers/Washers Circuit Diagram, Schematics and Diagrams.

Diagnostic Test

1. MEASURE WIPER SWITCH MUX CIRCUIT VOLTAGE
NOTE: If any BCM DTCs are set, diagnose them first before continuing.





Disconnect the BCM harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Turn the ignition on.
Measure the voltage of the Wiper Switch Mux circuit at cavity 65 of the BCM harness connector.
Is voltage present?

Yes

- Go to 2

No

- Replace the Body Control Module. Body Control Module - Removal.
- Perform BODY VERIFICATION TEST. Body Verification Test

2. MEASURE MULTI-FUNCTION SWITCH VOLTAGE




Turn the ignition off.
Disconnect the Multi-Function Switch harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Turn the ignition on.
Measure the voltage of the Wiper Switch Mux circuit at cavity 7 of the Multi-Function Switch harness connector.
Is voltage present?

Yes

- Repair the Wiper Switch Mux circuit for a short to voltage.
- Perform BODY VERIFICATION TEST. Body Verification Test

No

- Replace the Multi-Function Switch. Removal.
- Perform BODY VERIFICATION TEST. Body Verification Test