Symptom Chart: Headlamps

Diagnostics in this service information assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to DIAGNOSTIC METHODS for information regarding Ford-specific diagnostic practices.

SYMPTOM CHART

Condition	Possible Sources	Actions
A module does not respond to the scan tool	Fuse Wiring, terminals or connectors Module	REFER to SYMPTOM CHART: COMMUNICATION NETWORK .
One or both low beams are inoperative	Fuse Bulb Wiring, terminals or connectors Ballast Headlamp assembly BCM	VERIFY the bulbs are OK. If OK, REFER to Diagnostic Routine B: One Or Both Low Beams Are Inoperative .
One or both high beams are inoperative	Fuse Wiring, terminals or connectors Multifunction switch Headlamp assembly SCCM BCM	VERIFY the bulbs are OK. If OK, REFER to Diagnostic Routine C: One Or Both High Beams Are Inoperative .
The low beams are on continuously	Wiring, terminals or connectors Headlamp switch (integrated into the FLM) Headlamp assembly BCM	REFER to Diagnostic Routine D: The Low Beams Are On Continuously .
The high beams are on continuously	Wiring, terminals or connectors Multifunction switch Headlamp assembly SCCM BCM	REFER to Diagnostic Routine E: The High Beams Are On Continuously .
The flash-to-pass feature is inoperative	Multifunction switch BCM	REFER to Diagnostic Routine F: The Flash-To-Pass Function Is Inoperative .