Washers Run Continuously With Ignition On

*WASHERS RUN CONTINUOUSLY WITH IGNITION ON









Diagnostic Test

1. MEASURE MULTI-FUNCTION SWITCH RESISTANCE





NOTE: If any BCM DTCs are set, diagnose them first before continuing.

Disconnect the BCM harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Disconnect the Multi-Function Switch harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Turn the ignition on.

Measure the voltage of the Washer Pump Motor Control circuit at cavity 8 of the Multi-Function Switch harness connector.

Is voltage present?

Yes

- Repair the Washer Pump Motor Control circuit for an open.
- Perform BODY VERIFICATION TEST. Body Verification Test

No

- Go to 2

2. MEASURE MULTI-FUNCTION SWITCH RESISTANCE





NOTE: If any BCM DTCs are set, diagnose them first before continuing.

Turn the ignition off.

Disconnect the Multi-Function Switch harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Measure the resistance of the Multi-Function Switch between cavity 8 and cavity 11.

While measuring the resistance, depress the washer switch once and release.

Did the resistance reading go from infinite to less than 5 ohms to infinite?

Yes

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

No

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