Circuit/System Verification
WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON, observe the scan tool Windshield Washer Switch parameter while pressing and releasing the washer switch. The reading should change between Active and Inactive.
- If the reading does not change between the specified values, refer to the Windshield Washer Switch Circuit Test .
- Connect a test lamp between the relay side of the FRT WASH fuse and ground.
- Ignition ON, verify that the test lamp turns ON and OFF while pressing and releasing the windshield washer switch.
- If the test lamp does not turn ON and OFF while changing between the commanded states, refer to the Windshield Washer Pump Relay Control Circuit Test .
- If the washer pump does not operate, refer to the Windshield Washer Pump Circuit Test .