B1668

B1668-REVERSE LAMP CONTROL CIRCUIT HIGH





For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
With the ignition on.

- Set Condition:
The TIPM detects an open condition.





1. TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. Clear all TIPM DTCs.
3. Shift the transmission 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. (L1) BACKUP LAMP SWITCH OUTPUT CIRCUIT SHORT TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the TIPM C8 harness connector.
3. Disconnect the Inside Rearview Mirror harness connector (if equipped).
4. Disconnect the License Plate Lamp/Rear Camera Assembly harness connector (if equipped).
5. Turn the ignition on.
6. Measure the voltage on the (L1) Backup Lamp Switch Output circuit.

Is the voltage above 10.0 volts?

Yes

- Repair the (L1) Backup Lamp Switch Output circuit for a short to voltage.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

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