Wiper Switch: Testing and Inspection

See Wiper System and/or Washer System in the Diagnosis and Testing before testing the multi-function switch.

WARNING: ON VEHICLES EQUIPPED WITH AN AIR-BAG, REFER TO AIRBAGS AND SEAT BELTS/AIRBAGS BEFORE ATTEMPTING ANY 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 negative cable.
2. Unplug the multi-function switch wire harness connector from the multi-function switch.

Multi-Function Switch Continuity:

3. Using an ohmmeter, perform the switch continuity checks at the switch terminals as shown in the Multi-Function Switch Continuity chart.
4. If the switch falls any of the continuity checks, replace the faulty switch. If the switch is OK, repair the wiper system and/or washer system wire harness circuits as required.