B1668

B1668-REVERSE LAMP CONTROL CIRCUIT HIGH



- When Monitored:
Continuously

- Set Condition:
When the TIPM detects a short to battery on the Control circuit.





1. 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 2

No

- The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. 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 3

No

- Replace the inoperative bulb.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

3. 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. Body Verification Test.

No

- Replace the Totally Integrated Power Module.
- Perform the BODY VERIFICATION TEST. Body Verification Test.