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Home >> Acura >> 2008 >> RL >> Repair and Diagnosis >> External Pages >> Different car >> Section 45 (Multiplex Integrated Control System) >> DTC Troubleshooting >> DTC B1102: Door Multiplex Control Unit Internal Error
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DTC B1102: Door Multiplex Control Unit Internal Error

WARNING: This page is about a different car, the 2008 Acura TL and 2007 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - 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 (see BATTERY TEST ) and the charging system.