B1140

DTC B1140: Driver's Power Window Position Information 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 to LOCK (0) and then back to ON (II).
3. Open and close the driver's power window by using the power window master switch.
4. Check for DTCs with the HDS.

Are DTCs B1125 and B1126 also indicated?

YES - Troubleshoot the indicated DTC(s) first.

NO - Go to step 5.

5. Reset the power window control unit.
6. Clear the DTCs with the HDS.
7. Turn the ignition switch to LOCK (0), and then back ON (II).
8. Open and close the driver's power window by using the power window master switch.
9. Check for DTCs with the HDS.

Is DTC B1140 indicated?

YES - Go to the door multiplex control unit input test Component Tests and General Diagnostics and perform all power and ground input tests. If the tests prove OK, replace the power window master switch.

NO - The system is OK at this time. Check the connectors and terminals for poor or loose connections.