Symptom Chart

WARNING: This page is about a different car, the 2007 Ford Ranger. 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)	Circuitry SJB	REFER to MODULE COMMUNICATIONS NETWORK article.
The fog lamps are inoperative	Fuse Circuitry Fog lamp relay Headlamp switch SJB	Go to Pinpoint Test N .
The individual fog lamp is inoperative	Circuitry	Go to Pinpoint Test O .
The fog lamps are on continuously	Circuitry Headlamp switch Fog lamp relay SJB	Go to Pinpoint Test P .