Symptom Chart

WARNING: This page is about a different car, the 2013 Lincoln MKX and 2013 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM CHART

Condition	Possible Sources	Action
The courtesy lamps flash on and off	The Body Control Module (BCM) is not configured correctly.	CARRY OUT the Programmable Module Installation (PMI) for the BCM. REFER to MODULE CONFIGURATION . TEST the system for normal operation.
The courtesy lamps do not illuminate with a door open	Wiring, terminals or connectors Door latch BCM	GO to PINPOINT TEST A .
The courtesy lamps do not illuminate with the liftgate open	Wiring, terminals or connectors Liftgate latch (manual liftgate) Liftgate/Trunk Module (LTM) (power liftgate) BCM	GO to PINPOINT TEST B .
The courtesy lamps do not illuminate from the instrument panel dimmer switch	Front Lighting Control Module (FLM)	OPEN a door and OBSERVE the courtesy lamps. If the courtesy lamps do not illuminate, GO to PINPOINT TEST C . If the courtesy lamps illuminate, INSTALL a new FLM. REFER to EXTERIOR LIGHTING . TEST the system for normal operation.
One or more interior courtesy lamp is inoperative	Fuse Wiring, terminals or connectors Interior lamp BCM	VERIFY the bulb(s) is OK. If OK, GO to PINPOINT TEST C .
One or more puddle/scuff plate lamp is inoperative	Wiring, terminals or connectors Puddle lamp Scuff plate lamp Exterior mirror BCM	VERIFY the bulb(s) is OK. If OK, GO to PINPOINT TEST D .
All the courtesy lamps stay on continuously	Wiring, terminals or connectors Door latch Liftgate latch (manual liftgate) LTM (power liftgate) BCM	GO to PINPOINT TEST E .
The interior courtesy lamps stay on continuously	Wiring, terminals or connectors BCM	GO to PINPOINT TEST F .
The puddle lamps stay on continuously	Wiring terminals or connectors BCM	GO to PINPOINT TEST G .
One or more demand lamp is inoperative	Fuse Wiring, terminals or connectors Interior lamp BCM	VERIFY the bulb(s) is OK. If OK, GO to PINPOINT TEST H .
The battery saver does not deactivate after time-out	Wiring, terminals or connectors Interior lamp BCM	GO to PINPOINT TEST I .
An individual ambient lighting LED is inoperative/does not cycle through all color combinations	Ambient lighting harness	NOTE: The LEDs are not serviceable separate from the harness. REPAIR or INSTALL a new ambient lighting harness in question. TEST the system for normal operation.
The ambient lighting is inoperative	Wiring, terminals or connectors HVAC module	GO to PINPOINT TEST J .
The ambient lighting does not cycle through all color combinations	Wiring, terminals or connectors HVAC module	GO to PINPOINT TEST K .