Control Unit Input Test
Control Unit Input TestWith Automatic Wiper
1. Remove the rain sensor cover (A).
2. Disconnect the 10P connector (B) from the rain sensor/automatic wiper control unit(C).
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, 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 control unit must be faulty; replace it.
Without Automatic Wiper
1. Before testing the wiper/washer control functions, troubleshoot the multiplex control system.
Driver's Multiplex Control Unit
2. Remove the driver's multiplex control unit from the driver's under-dash fuse/relay box, and disconnect its connector.
3. Inspect all 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 driver's multiplex control unit still disconnected, make these input tests at the connector and driver's under-dash fuse/relay box sockets
- If any test indicates a problem, find and correct the cause, then recheck the system
- If all the input tests prove OK, driver's multiplex control unit must be faulty, replace it