Tests AF: The Trailer Electric Brakes Are Inoperative
PINPOINT TEST AF: THE TRAILER ELECTRIC BRAKES ARE INOPERATIVEAF1-AF2:
AF3-AF4:
AF5:
Normal Operation
The trailer tow electronic brake control module receives power through circuit 1051 (PK/WH) and provides output power to the trailer tow connector through circuit 43 (DB). The trailer tow electronic brake control module is grounded through circuit 1205 (BK). The trailer tow electronic brake control module also receives input when the parking lamps are illuminated through circuit 14 (BN) and the BPP switch through circuit 511 (LG) when the brake pedal is applied.
Possible Causes
- Circuit 14 (BN) open
- Circuit 43 (DB) open, shorted to power or shorted to ground
- Circuit 511 (LG) open
- Circuit 1051 (PK/WH) open
- Circuit 1205 (BK) open
- Trailer tow electronic brake control module
- Trailer