Symptom Chart: Turn Signal and Hazard Lamps

Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to: Diagnostic Methods .

Symptom Chart

Condition	Possible Sources	Actions
A module does not respond to the diagnostic scan tool	Fuse Wiring, terminals or connectors Module	REFER to: Communications Network .
The turn signal lamps flash fast and no bulbs are inoperative - vehicles not equipped with TRM	Bulb	Check if Light Emitting Diodes (LEDs) are installed in place of incandescent bulbs. If Light Emitting Diodes (LEDs) are installed, CONFIGURE (programmable parameters) the front turn lamp outage configuration off. If no Light Emitting Diodes (LEDs) are installed, Refer to BCM Hardware Testing .
The turn signal lamps flash fast and no bulbs are inoperative - vehicles equipped with TRM	Refer to the Pinpoint Test	GO to Pinpoint Test D
The turn signal function is inoperative	Refer to the Pinpoint Test	GO to Pinpoint Test A
The turn signal function is always on	LH multifunction switch SASM	INSTALL a new LH multifunction switch. Refer to: Steering Column Multifunction Switch LH . TEST the system for normal operation. If the concern still exists, INSTALL a new SASM (part of the clockspring). Refer to: Clockspring .
One turn signal lamp is inoperative or always on	Refer to the Pinpoint Test	GO to Pinpoint Test B
One or both cornering lamps are inoperative or always on	Bulb Wiring, terminals or connectors Headlamp Control module (HCM)	If the fog lamps are inoperative or always on, REFER to: Fog Lamps . If the fog lamps operate correctly, INSTALL a new Headlamp Control module (HCM).
The hazard lamp function is inoperative or always on	Refer to the Pinpoint Test	GO to Pinpoint Test C