Diagnostic Test

1. With the scan tool, read DTCs in all Electronic Control Units (ECUs) and record on the repair order.
2. With the scan tool, run a vehicle Scan Report, or record the Environmental Data related to the DTCs.
3. With the scan tool, erase all DTCs.
4. Turn the ignition off for a minimum of 10.0 seconds.
5. Turn the ignition on.
6. Using the recorded Environmental Data and the When Monitored Conditions above, operate the vehicle in the conditions that set the DTC.
7. With the scan tool, read Body Control Module (BCM) DTCs.

Did the DTC return?

Yes 

• Go To  2

No 

• Perform the appropriate INTERMITTENT CONDITION diagnostic procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .

1. Turn the ignition off.
2. Disconnect the component harness connector(s) containing the circuit being tested. Note:  Use the wiring diagram as a guide to follow the path of the circuit.
3. With the scan tool, erase all DTCs.
4. Turn the ignition off for a minimum of 10.0 seconds.
5. Turn the ignition on.
6. Using the recorded Environmental Data and the When Monitored Conditions above, operate the vehicle in the conditions that set the DTC.
7. With the scan tool, read BCM DTCs.

Did the DTC return?

Yes 

• Go To  3

No 

• Replace the Passenger Door Unlock Motor in accordance with the Service Information. Refer to LATCH, DOOR, REMOVAL AND INSTALLATION .
• Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

1. Turn the ignition off.
2. Disconnect the component harness connector(s) containing the circuit being tested. Note:  Use the wiring diagram as a guide to follow the path of the circuit.
3. With the scan tool, erase all DTCs.
4. Turn the ignition off for a minimum of 10.0 seconds.
5. Turn the ignition on.
6. Using the recorded Environmental Data and the When Monitored Conditions above, operate the vehicle in the conditions that set the DTC.
7. With the scan tool, read BCM DTCs.

Did the DTC return?

Yes 

• Go To  4

No 

• Replace the Left Rear Door Lock/Unlock Motor in accordance with the Service Information. Refer to LATCH, DOOR, REMOVAL AND INSTALLATION .
• Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

1. Turn the ignition off.
2. Disconnect the component harness connector(s) containing the circuit being tested. Note:  Use the wiring diagram as a guide to follow the path of the circuit.
3. With the scan tool, erase all DTCs.
4. Turn the ignition off for a minimum of 10.0 seconds.
5. Turn the ignition on.
6. Using the recorded Environmental Data and the When Monitored Conditions above, operate the vehicle in the conditions that set the DTC.
7. With the scan tool, read BCM DTCs.

Did the DTC return?

Yes 

• Go To  5

No 

• Replace the Right Rear Door Lock/Unlock Motor in accordance with the Service Information. Refer to LATCH, DOOR, REMOVAL AND INSTALLATION .
• Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

1. Using a DVOM, measure the voltage on the circuit being tested at the component harness connector.

Is there any voltage present?

Yes 

• Go To  6

No 

• Go To  7

1. Turn the ignition off.
2. Disconnect the Electronic Control Unit (ECU) harness connector(s) for the circuits being tested. Note:  Use the wiring diagram as a guide to follow the path of the circuit.
3. Turn the ignition on.
4. Using a DVOM, measure the voltage on the circuits being tested at the Electronic Control Unit (ECU) harness connector(s).

Is there any voltage present?

Yes 

• Repair the circuit for a short to voltage.
• Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

No 

• Go To  7

1. Disconnect all BCM harness connectors.
2. Disconnect all related in-line harness connections (if equipped).
3. Disconnect the related component harness connectors.
4. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
   • Proper connector installation.
   • Damaged connector locks.
   • Corrosion.
   • Other signs of water intrusion.
   • Weather seal damage (if equipped).
   • Bent terminals.
   • Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
   • Terminals that have been pushed back into the connector cavity.
   • Perform a terminal drag test on each connector terminal to verify proper terminal tension.

   Repair any conditions that are found.

5. Connect all BCM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
6. Connect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
7. Connect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
8. With the scan tool, erase DTCs.
9. Using the recorded Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
10. With the scan tool, read BCM DTCs.

    Did the DTC return?

    Yes 

    • Replace the Body Control Module (BCM) in accordance with the Service Information. Refer to MODULE, BODY CONTROL (BCM), REMOVAL AND INSTALLATION .
    • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

    No 

    • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
    • Test complete.