Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. Activate the Door Lock/Unlock Switch.
3. With the scan tool, read the Body Control Module (BCM) DTCs and record on the repair order.
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - The condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension. If no problems are found, test complete.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE DRIVER DOOR LOCK/UNLOCK MOTOR
1. Turn the ignition off.
2. Disconnect Driver Door Latch harness connector.
3. Turn the ignition on.
4. Activate the Door Lock/Unlock Switch.
5. With the scan tool, read the BCM DTCs.
  Is the DTC active?
  
  Yes
  - Go To 3
  No
  - Replace the Driver Door Latch in accordance with the Service Information. Refer to LATCH, DOOR, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE PASSENGER DOOR LOCK/UNLOCK MOTOR
1. Turn the ignition off.
2. Disconnect Passenger Door Latch harness connector.
3. Turn the ignition on.
4. Activate the Door Lock/Unlock Switch.
5. With the scan tool, read the BCM DTCs.
  Is the DTC active?
  
  Yes
  - Go To 4
  No
  - Replace the Passenger Door Latch in accordance with the Service Information. Refer to LATCH, DOOR, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (P777) DOOR LOCK RELAY CONTROL CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the BCM C6/F harness connector.
3. Check for continuity between ground and the (P777) Door Lock Relay Control circuit at the Driver Door Latch harness connector.
  Is there continuity between ground and the (P777) Door Lock Relay Control circuit?
  
  Yes
  - Repair the short to ground in the (P777) Door Lock Relay Control circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Replace the Body Control Module (BCM) in accordance with the Service Information. Refer to MODULE, BODY CONTROL (BCM), REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .