B166B

B166B-LEFT TRAILER TOW LAMP CONTROL CIRCUIT LOW





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

- When Monitored:
With the ignition on.

- Set Condition:
The TIPM Detects a Short to ground condition.





1. INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the Scan Tool, clear all TIPM DTC's.
3. Turn on the Left Turn Signal.
4. With the Scan Tool read the DTC information.

Does the Scan Tool read: B166B-LEFT TRAILER TOW LAMP CONTROL CIRCUIT LOW?

Yes

- Go To 2

No

- The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.
- Perform the BODY VERIFICATION TEST. Body Verification Test

2. (L673) TRAILER TOW LEFT TURN RELAY OUTPUT CIRCUIT SHORTED TO GROUND




1. Turn the ignition off.
2. Disconnect the TIPM C3 harness connector.
3. Measure the resistance between ground and the (L673) Trailer Tow Left Turn Relay Output circuit.

Is the resistance below 5.0 ohms?

Yes

- Repair the (L673) Trailer Tow Left Turn Relay Output circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test

No

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