Symptom Chart

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. 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 Smart Junction Box (SJB) is not configured correctly.	CONFIGURE the SJB . REFER to GENERAL PROCEDURES . TEST the system for normal operation.
The courtesy lamps do not illuminate with a door open	Wiring, terminals or connectors Door ajar switch (integrated into the door latch) Instrument panel dimmer switch SJB	GO to PINPOINT TEST A .
The courtesy lamps do not illuminate when using the Remote Keyless Entry (RKE) transmitter	Wiring, terminals or connectors SJB	OPEN a door and OBSERVE the courtesy lamps. If the courtesy lamps do not turn on with a door open, GO to PINPOINT TEST A . If the courtesy lamps turn on with a door open, INSTALL a new SJB . REFER to SMART JUNCTION BOX (SJB) . TEST the system for normal operation.
The courtesy lamps do not illuminate with the liftgate or liftgate window open	Wiring, terminals or connectors Liftgate ajar switch (integrated into the liftgate latch) Liftgate window ajar switch (integrated into the liftgate window latch) SJB	GO to PINPOINT TEST B .
The courtesy lamps do not illuminate from the instrument panel dimmer switch	Wiring, terminals or connectors Instrument panel dimmer switch SJB	GO to PINPOINT TEST C .
The dome defeat feature is inoperative	Wiring, terminals or connectors Instrument panel dimmer switch SJB	GO to PINPOINT TEST D .
The interior courtesy lamp (s) are inoperative	Fuse Wiring, terminals or connectors Lamp assembly SJB	GO to PINPOINT TEST E .
All the courtesy lamps stay on continuously	Wiring, terminals or connectors Instrument panel dimmer switch Liftgate ajar switch (integrated into the liftgate latch) Liftgate window ajar switch (integrated into the liftgate window latch) Door ajar switch (integrated into the door latch) SJB	GO to PINPOINT TEST F .
All 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 Sun visor Interior lamp	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 ambient lighting is inoperative	Wiring, terminals or connectors Ambient lighting harness Ambient lighting switch Ambient lighting module	GO to PINPOINT TEST J .
An individual ambient lamp is inoperative/does not display all colors	Ambient lighting harness	INSTALL a new ambient lighting harness in question. TEST the system for normal operation.
The ambient lighting does not display all colors	Wiring, terminals or connectors Ambient lighting harness Ambient lighting switch Ambient lighting module	GO to PINPOINT TEST K .