Symptom Chart

WARNING: This page is about a different car, the 2009 Mercury Milan, 2009 Lincoln MKZ, and 2009 Ford Fusion. 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)	SJB	REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the no communication problem.
No power in all ignition switch positions	Battery Junction Box (BJB) fuse Ignition switch Wiring, terminals or connectors	Go to Pinpoint Test A .
No power in ACC	Ignition switch Wiring, terminals or connectors	Go to Pinpoint Test B .
No power in RUN	Ignition switch Wiring, terminals or connectors	Go to Pinpoint Test C .
No power in START	Ignition switch Wiring, terminals or connectors	Go to Pinpoint Test D .
The ignition key is hard to turn	Ignition key Ignition lock cylinder Ignition switch	Go to the Ignition Switch - Mechanical .
The multifunction switch does not operate correctly	Multifunction switch SJB	For a concern with the exterior lighting, REFER to EXTERIOR LIGHTING article. For a concern with the wipers and washers, REFER to WIPERS AND WASHERS article.