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

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

NOTE: Before testing the combination switch control unit, troubleshoot the multiplex integrated control unit first, using B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A.

1. Remove the dashboard lower cover Driver's Dashboard Lower Cover Removal/Installation.

2. Remove the steering column covers Service and Repair.

3. Disconnect the 8P connector (A) from the wiper/washer switch (B).





4. 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 5.

5. 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 6.









6. Reconnect the 8P connector to the wiper/washer switch, 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 wiper/washer switch (combination switch control unit).