Diagnostic Test

TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on, engine off.
2. Clear all TIPM DTCs.
3. With foot on brake, place the gear selector into reverse.
4. With the scan tool, read DTCs.
  Does the scan tool read: B1668-REVERSE LAMP CONTROL CIRCUIT HIGH?
  
  Yes
  - Go to Step 2.
  No
  - The conditions that caused this code to set are not present at this time. Using the appropriate wiring diagram as a guide, inspect the wiring and connectors.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
BACKUP LAMP
1. Turn the ignition off.
2. Inspect the Backup Lamp assembly for an open condition.
  Is the inoperative bulb OK?
  
  Yes
  - Go to Step 3.
  No
  - Replace the inoperative bulb in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
TOTALLY INTEGRATED POWER MODULE
1. Turn the ignition off.
2. Disconnect the TIPM C3 harness connector.
3. Measure the voltage between (L1) Backup Lamps Control circuit and ground.
  Is there any voltage present?
  
  Yes
  - Repair the (L1) Backup Lamps Control circuit.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Replace the Totally Integrated Power Module (TIPM) in accordance with the Service Information. Refer to MODULE, TOTALLY INTEGRATED POWER (TIPM) .
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .