Door Multiplex Control Unit Input Test

Door Multiplex Control Unit Input Test

NOTE: Check the No. 22 (120 A), No. 23 (60 A), No. 15 (40 A) fuse in the under-hood fuse/relay box before troubleshooting.

1. Before troubleshooting the door multiplex control unit, troubleshoot the multiplex integrated control system first, using B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A.

2. Turn the ignition switch to LOCK (0).

3. Remove the power window master switch Power Window Master Switch Replacement.

4. Disconnect the 23P connector from the power window master switch.





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

- If the test indicates a problem, find and correct the cause, then recheck the system.
- If the inputs test prove OK, go to step 7.





7. Reconnect the connector to the door multiplex control unit, 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, the door multiplex control unit must be faulty, replace the power window master switch.