Diagnostic Test

CHECK FOR ACTIVE DTCS
1. Turn the ignition on.
2. With the scan tool, generate and record the Vehicle Scan Report.
3. With the scan tool, erase DTCs.
4. Turn the ignition off.
5. Wait for 10 seconds.
6. Turn the ignition on and start the engine.
7. Operate the vehicle in the conditions that set this DTC.
8. With the scan tool, read Power Lift Gate Module (PLGM) DTCs.
  Did the DTC return?
  
  Yes
  - Go to 2
  No
  - The conditions that originally set this DTC are not present in the moment. Refer to the Wiring Information and check all related connectors for signs of water intrusion, corrosion, bent or spaced connectors and proper pin voltage. If no problem is found, the test is complete. Perform the TESTING FOR AN INTERMITTENT CONDITION. Refer to TESTING FOR AN INTERMITTENT CONDITION .
CHECK THE LIFTGATE CHIME DEVICE FOR EMITTING SOUND
NOTE:
On some models the chime that is emitted during a "Customer Activated Liftgate Commanded Movement" can be turned off through the settings in the Radio. Verify the state of this setting before proceeding to ensure accurate Diagnostics of the Chime Device.

NOTE:
Using the Scan Tool, activate the Power Liftgate Chime Function.

Check the Liftgate Chime Device for emitting sound.

Does the Chime Device emit any sound?

Yes
- Perform the TESTING FOR AN INTERMITTENT CONDITION procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
No
- Go to 3
CHECK THE POWER LIFTGATE CHIME DEVICE
1. Turn the ignition off.
2. Replace the power liftgate chime device with a faultless one (replacement for test).
3. Turn the ignition on.
4. With the scan tool, erase DTCs from the Power LiftGate Module (PLGM).
5. Operate the vehicle in the conditions that set this DTC.
6. With the scan tool, read DTCs from the Power LiftGate Module (PLGM).
  Did the DTC return?
  
  Yes
  - Go to 4
  No
  - Replacing the faulty component repaired the fault.
    Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE POWER LIFTGATE MODULE (PLGM) HARNESS CONNECTIONS
1. Disconnect all Power LiftGate Module (PLGM) harness connectors.
2. Disconnect all related in-line harness connectors (if equipped).
3. Disconnect all related systems harness connectors.
4. Check the harness and components connectors and the male female terminals for the following conditions
  - Proper connector installation.
  - Apparently damaged connectors lock.
  - Corrosion.
  - Water contact signs.
  - If the weatherproof protection is damaged (If equipped).
  - Bent terminals.
  - Overheating due to poor connection (terminal should be colorless due to overheat).
  - Terminals that have been damaged due to being pushed.
  - Perform a terminal drag test on each terminal to verify proper terminal tension.
5. Repair any damage found on step 4.
6. Reconnect all Power LiftGate Module (PLGM) harness connectors. Make sure all the connectors are fully seated and the connector locks are fully engaged.
7. Reconnect all the in-line harness connectors (if equipped). Make sure all the connectors are fully seated and the connector locks are fully engaged.
8. Reconnect all the harness related connectors. Make sure the connectors are fully seated.
9. With the scan tool, erase all DTCs.
10. Operate the vehicle in the conditions that set this DTC.
11. With the scan tool, read the Power LiftGate Module (PLGM) DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Power Liftgate Module (PLGM) in accordance with the Service Information. Refer to MODULE, POWER LIFTGATE (PLGM), REMOVAL AND INSTALLATION .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Test complete. Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .