Tests AA: The Trailer Lamps Are On Continuously

PINPOINT TEST AA: THE TRAILER LAMPS ARE ON CONTINUOUSLY

Normal Operation - Trailer Tow Turn/Stoplamp
The trailer tow LH stop/turn relay coil receives voltage through circuit CLS18 (GY/BN) when the vehicle LH rear stoplamp is illuminated. When the trailer tow LH stop/turn relay is energized, voltage is routed to the trailer tow connector through circuit CAT06 (YE).

The trailer tow RH stop/turn relay coil receives voltage through circuit CLS19 (VT/OG) when the vehicle RH rear stoplamp is illuminated. When the trailer tow RH stop/turn relay is energized, voltage is routed to the trailer tow connector through circuit CAT09 (GN).

Normal Operation - Trailer Tow Parking
The trailer tow parking lamp relay coil receives voltage through circuit CLS30 (VT/WH) when the vehicle parking lamps are illuminated. When the trailer tow parking lamp relay is energized, voltage is routed to the trailer tow connector through circuit CAT11 (BN).

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Trailer tow relay
- Trailer

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