Symptom Chart

WARNING: This page is about a different car, the 2008 Mercury Mariner and 2008 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

Symptom Chart

Condition	Possible Sources	Action
No communication with the smart junction box (SJB)	Fuse Wiring, terminals or connectors SJB	REFER to MODULE COMMUNICATIONS NETWORK article.
All the stoplamps are inoperative	Fuse Wiring, terminals or connectors Stoplamp switch SJB	Go to Pinpoint Test H .
One or more stoplamps are inoperative	Wiring, terminals or connectors Trailer tow stop/turn relay Bulb holder High mounted stoplamp SJB	Go to Pinpoint Test I .
The stoplamps are on continuously	Wiring, terminals or connectors Stoplamp switch Speed control actuator PCM SJB	Go to Pinpoint Test J .