Diagnostic Test

CHECK FOR AN ACTIVE DTC
NOTE:
Be sure the thumbwheels on the Dimmer Module are turned fully on during this test.
1. Turn the ignition on.
2. With the scan tool, create a Vehicle Scan Report and attach it to the repair order.
3. Turn the ignition on to off three times.
4. Turn the park lamps on.
5. Turn the ignition on and wait one minute.
6. With the scan tool, read DDM DTCs.
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - Perform the TESTING FOR AN INTERMITTENT CONDITION procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
CHECK THE (M33) DOOR AMBIENT LAMP FEED DRIVER CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Remove the inner door panel trim in accordance with the Service Information.
3. Leave the Driver Door Map Pocket and Handle Lamp connector connected.
4. Disconnect the Driver Door Module C5 harness connector.
5. Turn the ignition on.
6. Measure the voltage between ground and the (M33) Door Ambient Lamp Feed Driver circuit in the Driver Door Module C5 harness connector.
  Is there any voltage present?
  
  Yes
  - Repair the (M33) Door Ambient Lamp Feed Driver circuit for a short to voltage.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 3
CHECK THE (M33) DOOR AMBIENT LAMP FEED DRIVER CIRCUIT FOR A OPEN
1. Turn the ignition off.
  NOTE:
  Make sure the Driver Door Map Pocket and Handle Lamps connectors are still connected.
2. Turn the ignition on.
3. Connect a fused jumper wire between B (+) and the (M33) Door Ambient Lamp Feed Driver circuit in the DDM C5 harness connector.
4. Connect a jumper wire between ground and the (M34) Door Lighting Return Driver circuit in the DDM C5 harness connector
  Does the Driver Door Map Pocket and Handle Lamps illuminate brightly?
  
  Yes
  - Go To 6
  No
  - Go To 4
CHECK THE (M33) DOOR AMBIENT LAMP FEED DRIVER CIRCUIT FOR AN OPEN
1. Disconnect the Driver Door Map Pocket and Handle Lamp harness connectors.
2. Measure the resistance of the (M33) Door Ambient Lamp Feed Driver circuit between the DDM C5 harness connector; and the harness connectors for the Driver Door Map Pocket and Driver Door Handle Lamps.
  Is the resistance below 2.0 Ohms?
  
  Yes
  - Go To 5
  No
  - Repair the (M33) Door Ambient Lamp Feed Driver circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (M34) DRIVER DOOR LIGHTING RETURN CIRCUIT FOR AN OPEN
1. Measure the resistance of the (M34) Door Lighting Return Driver circuit between the DDM C5 harness connector; and the harness connectors for the Driver Door Map Pocket Lamp and Driver Door Handle Lamps.
  Is the resistance below 2.0 Ohms?
  
  Yes
  - Replace the Driver Door Ambient Lamp(s) as necessary.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Repair the (M34) Door Lighting Return Driver circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK RELATED HARNESS CONNECTIONS
1. Disconnect all Driver Door Module 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. Reconnect all Driver Door Module harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
6. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
7. Reconnect 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 Vehicle Scan Report, 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 DDM DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Driver Door Module (DDM) in accordance with the Service Information. Refer to MODULE, DOOR (DDM/PDM), 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.