Diagnostic Test

CHECK FOR AN ACTIVE DTC
NOTE:
Ensure the battery is fully charged.
1. Turn the ignition on.
2. With the scan tool, read DMRL DTCs and record on the repair order.
3. With the scan tool, select: "DMRL" and "System Tests".
4. Perform the Door Handle Verification Test. This will activate the Module to retest for DTCs.
5. With the scan tool, read DMRL DTCs and wait one (1) minute.
  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 (P402) LEFT REAR PASSIVE ENTRY DOOR HANDLE SWITCH SENSE CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT
1. Turn the ignition off.
2. Remove the Rear Left Exterior Door Handle and disconnect the switch harness connector.
3. Disconnect the Left Rear Door Module (DMRL) C4 harness connector.
4. Check for continuity between the (P402) Left Rear Passive Entry Door Handle Switch Sense circuit and all other circuits at the Left Rear Door Module (DMRL) C4 harness connector.
  Is there continuity between the (P402) Left Rear Passive Entry Door Handle Switch Sense circuit and any other circuit?
  
  Yes
  - Repair the (P402) Left Rear Passive Entry Door Handle Switch Sense circuit for a short to another circuit.
  - With the scan tool, select "Diagnostic Procedures", "Reset ECU" and "DMRL" and perform the routine.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 3
CHECK THE (P402) LEFT REAR PASSIVE ENTRY DOOR HANDLE SWITCH SENSE CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition on.
2. Measure the voltage on the (P402) Left Rear Passive Entry Door Handle Switch Sense circuit at the Left Rear Door Module (DMRL) C4 harness connector.
  Is there any voltage present?
  
  Yes
  - Repair the (P402) Left Rear Passive Entry Door Handle Switch Sense circuit for a short to voltage.
  - With the scan tool, select "Diagnostic Procedures", "Reset ECU" and "DMRL" and perform the routine.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 4
CHECK RELATED HARNESS CONNECTIONS
1. Disconnect all Left Rear 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 Left Rear 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 DMRL DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Left Rear Door Module in accordance with the Service Information. Refer to REAR .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  - Test complete.