B1126

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.

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?

YES - Replace the door multiplex control unit

NO - Go to step 5.

5. Refer to the power window master switch input test, check for continuity between the driver's power window motor 6P connector and the door multiplex control unit 14P connector B.

Are all the wire harness OK?

YES - 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.

NO - Repair a short or an open in the wire.

DTC B1140: Driver's Power Window Position Detect Circuit 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. Open and close the driver's power window by using the driver's switch manually.
4. Check for DTCs with the HDS.

Is DTC B1125 or B 1126 indicated?

YES - Troubleshoot the DTC B1125 or B1126.

NO - Go to step 5.

5. Reset the power window control unit.
6. Check for DTCs again with the HDS.

Is DTC B1140 indicated?

YES - Go to step 7.

NO - The system is recovered at this time.

7. Substitute a known-good power window master switch.
8. Open and close the driver's power window by using the driver's switch manually.
9. Check for DTCs with the HDS.

Is DTC B1140 indicated?

YES - Faulty driver's window motor; replace it.

NO - Faulty door multiplex control unit; replace the power window master switch.