Wipers/Washers (Combination Switch Control Unit) Input Test

Wipers/Washers (Combination Switch Control Unit) Input Test

NOTE: Before troubleshooting the wiper/washer system, troubleshoot B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A.

1. Remove the steering column covers.

2. Disconnect the 12P connector (A) from the combination switch (B).





3. 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 4.

4. With the connector still disconnected, do the following input tests:

- 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 5.





5. Reconnect the 12P connector to the combination switch, turn the ignition switch to ON (II) and do the following input tests:

- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, replace the combination switch control unit Service and Repair.