Symptom Chart

WARNING: This page is about a different car, the 2014 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM CHART

Condition	Possible Sources	Action
NOTE: LED lamps draw low current compared to an incandescent bulb. The Body Control Module (BCM) interprets this as a bulb out and fast flashes (bulb outage mode) the turn lamps. The turn signal lamps flash fast and no bulbs are inoperative	Bulb	INSTALL the correct bulb. TEST the system for normal operation.
The turn signal function is inoperative	Multifunction switch Steering Column Control Module (SCCM)	VERIFY the bulbs are OK. If OK, GO to PINPOINT TEST L .
The turn signal function is always on	Multifunction switch SCCM	INSTALL a new multifunction switch. REFER to STEERING COLUMN SWITCHES . TEST the system for normal operation. If the concern still exists, INSTALL a new SCCM . REFER to STEERING COLUMN SWITCHES . TEST the system for normal operation.
One turn signal lamp is inoperative/always on	Fuse Wiring, terminals or connectors Bulb socket Exterior mirror turn lamp Exterior mirror BCM	VERIFY the bulb is OK. If OK, GO to PINPOINT TEST M .
The hazard lamp function is inoperative/always on	Wiring, terminals or connectors Multifunction switch Passenger Air Bag Deactivation (PAD) indicator BCM	GO to PINPOINT TEST N .