Symptom Chart

WARNING: This page is about a different car, the 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM CHART

Condition	Possible Sources	Action
Both headlamps are inoperative	Fuse Circuitry Headlamp switch Multifunction switch Central junction box (CJB)	GO to PINPOINT TEST A .
The low beams are inoperative	Circuitry Daytime running lamp (DRL) relay 3 (if equipped) Multifunction switch CJB	GO to PINPOINT TEST B .
The high beams are inoperative	Fuse Circuitry Multifunction switch CJB	GO to PINPOINT TEST C .
One low beam headlamp is inoperative	Fuse Circuitry CJB	GO to PINPOINT TEST D .
One high beam headlamp is inoperative	Circuitry	REPAIR circuit 12 (LG/BK). TEST the system for normal operation.
The headlamps are on continuously	Circuitry Headlamp switch Multifunction switch CJB Vehicle security module	GO to PINPOINT TEST E .
The high and low beam headlamp is inoperative on one side	Circuitry	REPAIR circuit 57 (BK). TEST the system for normal operation.
The flash-to-pass feature is inoperative	Fuse Circuitry Multifunction switch	GO to PINPOINT TEST F .