B1128

DTC Troubleshooting: B1128

DTC B1128:

Driver's Door Lock Switch Signal Malfunction

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A.

1. Clear the DTCs with the HDS.

2. Lock and unlock the driver's door with the driver's door lock switch.

3. Check for DTCs with the HDS.

Is DTC B1128 indicated?

YES -

Go to step 4.

NO -

Intermittent failure, the system is OK at this time. Check for loose or poor connection.�

4. With the driver's door lock switch in the neutral position, select DOOR LOCK from the BODY ELECTRICAL system select menu, and enter DATA LIST.

5. Check the ON/OFF information of the DRIVER'S DOOR LOCK SWITCH (LOCK) and DRIVER'S DOOR LOCK SWITCH (UNLOCK).

Are both information indicators OFF?

YES -

Go to step 6.

NO -

Replace the power window master switch.�

6. Operate the driver's door lock switch in the LOCK and UNLOCK position, and check the ON/OFF information of the DRIVER'S DOOR LOCK SWITCH (LOCK) and DRIVER'S DOOR LOCK SWITCH (UNLOCK).

Are both DRIVER'S DOOR LOCK SWITCH (LOCK) and DRIVER'S DOOR LOCK SWITCH (UNLOCK) information indicators ON at the same time when the door lock switch is in the LOCK or UNLOCK position?

YES -

Replace the power window master switch.�

NO -

Intermittent failure, the system is OK at this time. Check for loose or poor connections.�