Diagnostic Test

VERIFY THE DTC IS ACTIVE
1. Turn the ignition on.
2. With the scan tool, read DTCs.
  Does the scan tool display this DTC as active?
  
  Yes
  - Go To 2
  No
  - Test complete. The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE - BODY VERIFICATION TEST .
CHECK THE LEFT BACKUP LAMP
1. Turn the ignition off.
2. Disconnect the Left Tail Lamp Assembly harness connector.
3. Turn the ignition on.
4. Apply the park brake.
5. Position the selector lever Reverse.
  Does the scan tool display this DTC as active?
  
  Yes
  - Go To 3
  No
  - Replace the Left Backup Lamp Bulb in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE - BODY VERIFICATION TEST .
CHECK THE RIGHT BACKUP LAMP
1. Turn the ignition off.
2. Disconnect the Right Tail Lamp Assembly harness connector.
3. Turn the ignition on.
4. With the park brake applied, position the selector lever in Reverse.
  Does the scan tool display this DTC as active?
  
  Yes
  - Go To 4
  No
  - Replace the Right Backup Lamp Bulb in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE - BODY VERIFICATION TEST .
CHECK THE (L1) BACKUP LAMP FEED CIRCUIT
1. Turn the ignition off.
2. Disconnect the TIPM C8 harness connector.
3. Turn the ignition on.
4. With the park brake applied, position the selector lever in Reverse.
  Does the scan tool display this DTC as active?
  
  Yes
  - Replace the Totally Integrated Power Module (TIPM) in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE - BODY VERIFICATION TEST .
  No
  - Repair the high resistance in the (L1) Backup Lamp Feed circuit. Inspect the related wiring harness for chafed, corroded, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE - BODY VERIFICATION TEST .