Wiper Control Module: Testing and Inspection

NOTE:
- Before testing, go to the Troubleshooting Guide Refer to Multiplex Communication System Testing and Inspection. Be sure to go through self-diagnosis function modes 1 and 2.
- All connector views are from the wire side of female terminals unless otherwise noted.

Multiplex Control Unit (Driver's):
1. Remove the under-dash fuse/relay box.
2. Remove the driver's unit from the under-dash fuse/relay box .







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, make the input tests as shown in the table at the connector and the fuse/relay box socket.
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, the control unit must be faulty; replace it.