B166C

B166C-LEFT TRAILER TOW LAMP CONTROL CIRCUIT HIGH






For a complete wiring diagram refer to Diagrams/Electrical.

- When Monitored:

With the ignition on.

- Set Condition:

The TIPM detects an open condition.






Diagnostic Test

1. TEST FOR INTERMITTENT CONDITION

Turn the ignition on.

Clear all TIPM DTC's

Turn on the Left Turn Signal.

With the scan tool, read DTC's.

Does the scan tool read: B166C-LEFT TRAILER TOW 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 - VER 1. Body Verification Test

2. (L673) TRAILER TOW LEFT TURN RELAY OUTPUT CIRCUIT SHORT TO VOLTAGE





Turn the ignition off.

Disconnect the TIPM C8 harness connector.

Turn the ignition on.

Measure the voltage on the (L673) Trailer Tow Left Turn Relay Output circuit.

Is the voltage greater than 10.0 volts?

Yes

- Repair the (L673) Trailer Tow Left Turn Relay Output circuit for a short to voltage.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test

No

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