Wiper/Washer Switch (Combination Switch Control Unit) Input Test

Wiper/Washer Switch (Combination Switch Control Unit) Input Test

1. Before troubleshooting the wiper/washer system, troubleshoot the B-CAN System Diagnosis Test Mode A.
2. Remove the driver's dashboard lower cover.
3. Remove the steering column covers.
4. Disconnect the 8P connector (A) from the wiper/washer switch (B).






5. Inspect the connector and socket terminals to be sure they are all making good contact.

- If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
- If the terminals look OK, go to step 6.

6. Reconnect the connector, and make these input tests at the connector.

- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, go to step 7.






7. Disconnect the connector from the wiper/washer switch, and make these input tests at the connector.

- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, the combination switch control unit must be faulty, replace the wiper/washer switch.