Symptom Chart

WARNING: This page is about a different car, the 2009 Mercury Grand Marquis and 2009 Ford Crown Victoria. 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 lighting control module (LCM)	Wiring, terminals or connectors LCM	REFER to MODULE COMMUNICATIONS NETWORK article.
The turn signal lamps are inoperative	Fuse Wiring, terminals or connectors Multifunction switch LCM	Go to Pinpoint Test K .
The turn signal lamps are always on	Multifunction switch	INSTALL a new multifunction switch. REFER to STEERING COLUMN SWITCHES article. TEST the system for normal operation.
One turn signal lamp is inoperative/always on	Wiring, terminals or connectors Multifunction switch	Go to Pinpoint Test L .
The cornering lamp is inoperative	Wiring, terminals or connectors Multifunction switch	Go to Pinpoint Test M .
The cornering lamp is always on	Wiring, terminals or connectors Multifunction switch	Go to Pinpoint Test N .
The hazard lamps are inoperative	Fuse Wiring, terminals or connectors Multifunction switch	Go to Pinpoint Test O .
The hazard lamps are always on	Multifunction switch	INSTALL a new multifunction switch. REFER to STEERING COLUMN SWITCHES article. TEST the system for normal operation.