Left Rear Door Fails To Lock And Unlock

*LEFT REAR DOOR FAILS TO LOCK AND UNLOCK






For a complete wiring diagram refer to Diagrams/Electrical.






Diagnostic Test

1. DTC PRESENT

Turn the ignition on.

With the scan tool, read DTC's.

Does the scan tool display any Door Lock related DTC's?

Yes

- Refer to symptom list for problems related to Power Door Locks to diagnose and repair DTC's.

No

- Go To 2

2. INSTRUMENT CLUSTER





Turn the ignition off.

Disconnect the Instrument Cluster C1 connector.

Connect a jumper wire between the (P5) Door Unlock Driver Left Rear circuit in the Instrument Cluster C1 connector and ground.

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.

Reverse the jumper wires to drive the motor in the opposite direction.

Did the left doors lock and unlock?

Yes

- Replace the Instrument Cluster.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Go To 3

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





Disconnect the Left Rear Door Latch connector.

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 BODY VERIFICATION TEST - VER 1. Body Verification Test

4. (P5) DOOR UNLOCK DRIVER LEFT REAR WIRE OPEN





Measure the resistance of the (P5) Door Unlock Driver Left Rear circuit between the Instrument Cluster C1 connector and the Door Latch connector.

Is the resistance below 5.0 ohms?

Yes

- Replace the Door Latch.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Repair the (P5) Door Unlock Driver Left Rear wire for an open.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test