B1120

DTC B1102: Door Multiplex Control Unit Internal Error

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN system diagnosis test mode A.

1. Clear the DTCs with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Operate the power window (UP/DOWN).
4. Check for DTCs with the HDS.

Is DTC B1102 indicated?

YES - Faulty door multiplex control unit; replace the power window master switch.

NO - Intermittent failure, the door multiplex control unit is OK at this time. Check for loose or poor connections. If the connections are good, check the battery condition and the charging system.