B166B

B166B-LEFT TRAILER TOW LAMP CONTROL CIRCUIT LOW





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

- When Monitored:
With the Trailer Tow Lamps activated.

- Set Condition:
When the Front Control Module (FCM) detects a LOW condition.





INTEGRATED POWER MODULE
1. Turn the ignition off.
2. Replace the Trailer Tow Left Turn relay with and known good relay.
3. Using the scan tool, clear all IPM DTCs.
4. Activate the Left Turn Signal.
5. Using the scan tool, read the Wiper DTCs.

Does the scan tool read: B166B-LEFT TRAILER TOW LAMP CONTROL CIRCUIT LOW?

Yes

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

No

- Test complete.
- Perform the BODY VERIFICATION TEST. Body Verification Test.