Symptom Chart

WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 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)	Smart junction box (SJB). Circuitry.	REFER to MULTIFUNCTION ELECTRONIC MODULES to continue diagnosis of the SJB.
The ignition switch is inoperative	Smart junction box (SJB) fuse 4 (10A). Ignition switch. Circuitry. Battery junction box (BJB) fuse(s): 1 (25A) 17 (50A)	GO to PINPOINT TEST A .
No power in RUN/ACC	Smart junction box (SJB) fuse 4 (10A). Battery junction box (BJB) fuse(s): 1 (25A) 17 (50A) Ignition switch. Circuitry.	GO to PINPOINT TEST B .
No power in RUN/START	Smart junction box (SJB) fuse 4 (10A). Battery junction box (BJB) fuse(s): 1 (25A) 17 (50A) Ignition switch. Circuit.	GO to PINPOINT TEST C .
The ignition key is hard to turn	Ignition key. Ignition lock cylinder. Ignition switch.	GO to PINPOINT TEST D .
The multifunction switch does not operate correctly	Multifunction switch. Smart junction box (SJB).	For a concern with the exterior lighting, REFER to EXTERIOR LIGHTING . For a concern with the wipers and washers, REFER to WIPERS AND WASHERS .