B166C

B166C-LEFT TRAILER TOW LAMP CONTROL CIRCUIT HIGH





For a complete wiring diagram refer to Diagrams/Electrical.

- When Monitored:
- With the Trailer Tow Lamps activated.

- Set Condition:
- When the FCM detects a HIGH condition.





Diagnostic Test

1. INTEGRATED POWER MODULE

Turn the ignition off.

Replace the Trailer Tow Left Turn relay with and known good relay.

With the Scan Tool, clear all IPM DTC's.

Activate the Left Turn Signal.

With the Scan Tool, read the Wiper DTC's.

Does the Scan Tool read: B166C-LEFT TRAILER TOW LAMP CONTROL CIRCUIT HIGH?

Yes

- Replace the Integrated Power Module.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Test complete.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test