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DTC B1126: Driver's Power Window Motor B Pulse Error

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. Turn the ignition switch ON (II).
  2. Open and close the driver's power window by using the driver's switch manually.
  3. Select the POWER WINDOWS from the BODY ELECTRICAL SYSTEM SELECT menu and enter DATA LIST.
  4. While the power window is moving, check the DETECT/NONE information of the DRIVER'S POWER WINDOW MOTOR PULSE B in the DATA LIST.

    Does the information indicator display DETECT? 

    1. YES  - Replace the door multiplex control unit.
    2. NO  - Go to step 5.
  5. Perform the driver's power window motor pulser test (see DRIVER'S WINDOW MOTOR TEST  ).

    Is it OK? 

    1. YES  - Go to step 6.
    2. NO  - Replace the driver's power window motor.
  6. Disconnect the 23P connector from the power window master switch, and the 6P connector from the driver's power window motor.
  7. Check for continuity between the power window master switch 23P connector and driver's power window motor 6P connector as follows.
    POWER WINDOW MASTER SWITCH 23P CONNECTOR AND DRIVER'S POWER WINDOW MOTOR 6P CONNECTOR

    Power Window Master Switch Driver's Power Window Motor
    No. 4 No. 3
    No. 6 No. 6
    No. 17 No. 2
    Fig 1: Checking Continuity Between Power Window Master Switch 23P Connector And Driver's Power Window Motor 6P Connector
    G03706751Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES  - Go to step 8.
    2. NO  - Repair an open in the wire.
  8. Check for continuity between the power window master switch 23P connector No. 4, No. 6, and No. 17 terminals and body ground individually.
    Fig 2: Checking Continuity Between Power Window Master Switch 23P Connector Terminals And Body Ground
    G03706752Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES  - Repair a short in the wire.
    2. NO  - Substitute a known-good door multiplex control unit, and recheck. If DTC is gone, the original door multiplex control unit is faulty; replace it. If the DTC is still indicated, replace the driver's power window motor.
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