Symptom Chart

WARNING: This page is about a different car, the 2008 Mercury Mariner and 2008 Ford Escape. 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 smart junction box (SJB)	Wiring, terminals or connectors SJB	REFER to MODULE COMMUNICATIONS NETWORK article.
The courtesy lamps flash on and off	The SJB is not configured correctly.	CONFIGURE the SJB. REFER to MODULE CONFIGURATION article. TEST the system for normal operation.
The courtesy lamps are inoperative	Fuse Wiring, terminals or connectors Dimmer switch Smart junction box (SJB)	Go to Pinpoint Test A .
An individual courtesy lamp is inoperative	Wiring, terminals or connectors Lamp assembly	Go to Pinpoint Test B .
The courtesy lamps stay on continuously	Wiring, terminals or connectors Door ajar switch (part of door latch) SJB	Go to Pinpoint Test C .
The courtesy lamps do not turn on with one door open	Wiring, terminals or connectors Door ajar switch (part of door latch) SJB	Go to Pinpoint Test D .
The courtesy lamps do not turn on with the liftgate or liftgate glass open	Wiring, terminals or connectors Liftgate ajar switch Liftgate glass ajar switch SJB	Go to Pinpoint Test E .
The courtesy lamps are inoperative - from the dimmer switch	Wiring, terminals or connectors Dimmer switch SJB	Go to Pinpoint Test F .
The demand lamps are inoperative	Fuse Wiring, terminals or connectors SJB	Go to Pinpoint Test G .
An individual demand lamp is inoperative	Wiring, terminals or connectors Lamp assembly	Go to Pinpoint Test H .
The battery saver does not deactivate after time-out	Wiring, terminals or connectors SJB	Go to Pinpoint Test I .
The illuminated entry is inoperative when using the remote keyless entry (RKE) transmitter/keypad	RKE system SJB	Go to Pinpoint Test J .
The ambient lighting is inoperative	Fuse Wiring, terminals or connectors Ambient lighting harness Ambient lighting switch Ambient lighting module	Go to Pinpoint Test K .
The ambient lighting does not operate correctly - does not cycle through all color combinations	Wiring, terminals or connectors Ambient lighting harness Ambient lighting switch Ambient lighting module	Go to Pinpoint Test L .