Windshield Washer Switch: Testing and Inspection

Perform the diagnosis for the wiper and/or washer system before testing the multi-function switch.

WARNING: ON VEHICLES EQUIPPED WITH AIR-BAGS, REFER TO AIR BAGS AND SEAT BELTS/AIR BAGS BEFORE ATTEMPTING STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIR-BAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.

1. Disconnect and isolate the battery jump start attachment.
2. Disconnect the multi-function switch connector.

Multi Function Switch Continuity:

3. Using an ohmmeter, perform the switch continuity checks at the switch terminals as shown in the chart.
4. If the switch fails any of the continuity checks, replace the faulty switch.