Left Rear Door Fails To Lock And Unlock

LEFT REAR DOOR FAILS TO LOCK AND UNLOCK





For a complete wiring diagram, Refer to the Wiring Information






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

- 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 (P5) Door Unlock Driver Left Rear 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 left doors 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 Left Rear 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. (P5) DOOR UNLOCK DRIVER LEFT REAR WIRE OPEN




1. 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 the BODY VERIFICATION TEST. Body Verification Test.

No

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