Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. With the scan tool, read Body Control Module (BCM) DTCs and record on the repair order.
2. Record the Environmental Data.
3. With the scan tool, erase DTCs.
4. Using the recorded Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
5. With the scan tool, read BCM DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - Perform the TESTING FOR INTERMITTENT CONDITIONS procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
ACTUATE THE DECKLID/LIFTGATE/LIFTGATE RELAY
1. With the scan tool, actuate the Decklid/Liftgate Relay.
2. With the scan tool, erase the BCM DTCs.
3. Turn the ignition off.
4. Wait 10 seconds.
5. Turn the ignition on.
6. Close the Decklid/Liftgate and operate the Decklid/Liftgate Release Switch.
7. With the scan tool, read the BCM DTCs.
  Does the DTC return?
  
  Yes
  - Go To 3
  No
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  - Test complete.
CHECK THE (P306) DECKLID/LIFTGATE UNLOCK DRIVER CIRCUIT FOR AN OPEN
1. Turn the ignition off.
2. Disconnect the BCM C5/E harness connector.
3. Disconnect the Decklid/Liftgate Latch harness connector.
4. Measure the resistance of the (P306) Decklid/Liftgate Unlock Driver circuit between the BCM C5/E harness connector and the Decklid/Liftgate Latch harness connector.
  Is the resistance above 3.0 Ohms?
  
  Yes
  - Repair the open in the (P306) Decklid/Liftgate Unlock Driver circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 4
CHECK THE DECKLID/LIFTGATE LATCH FOR AN INTERNAL OPEN
NOTE:
The Decklid/Liftgate Release Motor is integral to the Decklid/Liftgate Latch.
1. At the Decklid/Liftgate Latch, component side, check for continuity between the Decklid/Liftgate Unlock Driver circuit and the Ground circuit.
  Is there continuity between the Decklid/Liftgate Unlock Driver circuit and Ground circuit at the Decklid/Liftgate Latch?
  
  Yes
  - Go To 5
  No
  - Replace the Decklid/Liftgate Latch in accordance with the Service Information. Refer to LATCH, REMOVAL AND INSTALLATION .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK RELATED HARNESS CONNECTIONS
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.