Symptom Chart

WARNING: This page is about a different car, the 2004 Mercury Monterey and 2004 Ford Freestar. 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 .
The fog lamps are inoperative	Fog lamp relay. Circuitry. Headlamp switch. Bussed electrical center (BEC). Smart junction box (SJB).	Go To PINPOINT TEST Q: THE FOG LAMPS ARE INOPERATIVE .
The individual fog lamp is inoperative	Circuitry. Bussed electrical center (BEC).	Go To PINPOINT TEST R: THE INDIVIDUAL FOG LAMP IS INOPERATIVE .
The fog lamps are on continuously	Circuitry. Fog lamp relay. Headlamp switch. Bussed electrical center (BEC). Smart junction box (SJB).	Go To PINPOINT TEST S: THE FOG LAMPS ARE ON CONTINUOUSLY .