Component Tests and General Diagnostics
Multiplex Control Unit Input TestDoor Unit:
1. Remove the driver's door panel, and disconnect the connectors from the door multiplex control unit.
2. 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 3.
3. Make the following input tests at the connector A.
- 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 4.
Passenger's Unit:
4. Remove the passenger's multiplex control unit from the passenger's under-dash fuse/relay box.
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. Make the following input tests at the connector B and the passenger's under-dash 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, go to step 7.
Driver's Unit:
7. Remove the driver's multiplex control unit from the driver's under-dash fuse/relay box.
8. 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 9.
9. Make the following input tests at the connector B and the driver's under-dash 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, troubleshoot the Multiplex Control System.