Driver Door Fails To Lock And Unlock

DRIVER DOOR FAILS TO LOCK AND UNLOCK





For a complete wiring diagram, refer to the Wiring Information Electrical Diagrams.






1. DTC PRESENT
1. Turn the ignition on.
2. With the scan tool, read DTCs.

Does the scan tool display any Door Lock related DTCs?

Yes

- Refer to symptom list for problems related to Power Door Locks and diagnose and repair DTCs.

No

- Go To 2

2. INSTRUMENT CLUSTER




1. Turn the ignition off.
2. Disconnect the Instrument Cluster C1 connector.
3. Connect a jumper wire between the (P1) Door Unlock Driver Left Front circuit in the Instrument Cluster C1 connector and ground.
4. Momentarily connect a fused jumper wire between the Fused B+ circuit and the (P393) Door Lock Driver Left Doors circuit in the Instrument Cluster C1 connector.
5. Reverse the jumper wires to drive the motor in the opposite direction.

Did the Driver Door lock and unlock?

Yes

- Replace the Instrument Cluster.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. (P393) DOOR LOCK DRIVER LEFT DOORS WIRE OPEN




1. Disconnect the Driver Door Latch connector.
2. Measure the resistance of the (P393) Door Lock Driver Left Doors circuit between the Instrument Cluster C1 connector and the Door Latch connector.

Is the resistance below 5.0 Ohms?

Yes

- Go To 4

No

- Repair the (P393) Door Lock Driver Left Doors wire for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

4. (P1) DOOR UNLOCK DRIVER LEFT FRONT WIRE OPEN




1. Measure the resistance of the (P1) Door Unlock Driver Left Front circuit between the Instrument Cluster C1 connector and the Door Latch connector.

Is the resistance below 5.0 Ohms?

Yes

- Replace the Door Latch assembly.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Repair the (P1) Door Unlock Driver Left Front wire for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.