C111B CADILLAC - Trailer Brake Power Control Module System Voltage Voltage Below Threshold
- Faulty Trailer Brake Power Control Module
- Trailer Brake Power Control Module harness is open or shorted
- Trailer Brake Power Control Module circuit poor electrical connection
Tech notes- C111B:03 Trailer Brake Power Control Module System Voltage - Voltage Below Threshold
- C111B:07 Trailer Brake Power Control Module System Voltage - Voltage Above Threshold
- C111B:5A Trailer Brake Power Control Module System Voltage - Plausibility Failure
- Anti-Lock Brake System (ABS) Warning Light ON
- Engine Light ON (or Service Engine Soon Warning Light)
C111b Cadillac DescriptionThe chassis control module receives inputs from the trailer brake power control module; these inputs are used to determine trailer connection and the amount of voltage supplied to the trailer brakes. The trailer brake power control module detects a voltage below a calibrated threshold on the battery positive voltage circuit.
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