Symptom Chart

WARNING: This page is about a different car, the 2006 Mercury Milan, 2006 Lincoln Zephyr, and 2006 Ford Fusion. 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 MULTIFUNCTION ELECTRONIC CONTROL MODULES .
The fog lamps are inoperative	Fuse Circuitry Fog lamp relay Headlamp switch SJB	GO to PINPOINT TEST S .
The individual fog lamp is inoperative	Circuitry	NOTE: Make sure the fog lamp bulb is OK before carrying out this step. MEASURE the resistance between the LH fog lamp C152-B, circuit GD121 (BK/YE), harness side and ground; or between the RH fog lamp C162-B, circuit GD123 (BK/RD), harness side and ground. If the resistance is less than 5 ohms, REPAIR circuit CLF12 (BN/YE). TEST the system for normal operation. If the resistance is not less than 5 ohms, REPAIR circuit GD121 (BK/YE) or circuit GD123 (BK/RD) as necessary. TEST the system for normal operation.
The fog lamps are on continuously	Circuitry Fog lamp relay Headlamp switch SJB	GO to PINPOINT TEST T .