Symptom Chart

WARNING: This page is about a different car, the 2010 Lincoln MKX and 2010 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM CHART

Condition	Possible Sources	Action
All the trailer lamps are inoperative	Wiring, terminals or connectors Trailer	GO to PINPOINT TEST Y .
The trailer stop/turn lamp trailer lamp is inoperative	Fuse Wiring, terminals or connectors Trailer tow stop/turn relay Battery Junction Box (BJB) Trailer	GO to PINPOINT TEST Z .
The trailer parking lamps are inoperative	Fuse Wiring, terminals or connectors Trailer tow parking lamp relay BJB Trailer	GO to PINPOINT TEST AA .
The trailer lamps are on continuously	Wiring, terminals or connectors Trailer tow relay Trailer	GO to PINPOINT TEST AB .