Symptom Table

WARNING: This page is about a different car, the 2006 Mercury Montego, 2006 Ford Freestyle, and 2006 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM TABLE

Condition	Possible Sources	Action
No communication with the instrument cluster	Fuse(s) Circuitry Instrument cluster	REFER to PINPOINT TEST A: NO COMMUNICATION WITH THE INSTRUMENT CLUSTER .
No communication with the smart junction box (SJB)	Fuse(s) Circuitry SJB	REFER to PINPOINT TEST A: NO COMMUNICATION WITH THE SMART JUNCTION BOX (SJB) .
The control illumination is inoperative	Smart junction box (SJB)	GO to PINPOINT TEST A .
The instrument cluster illumination is inoperative	Instrument cluster Smart junction box (SJB)	CHECK the other illumination sources for correct operation. If the other illumination sources operate correctly, INSTALL a new instrument cluster. REFER to REMOVAL AND INSTALLATION . TEST the system for normal operation. If the other illumination sources do not operate correctly, GO to PINPOINT TEST A .
The audio unit illumination is inoperative	Audio unit Smart junction box (SJB)	CHECK the other illumination sources for correct operation. If the other illumination sources operate correctly, REMOVE the audio unit. REFER to REMOVAL AND INSTALLATION . SEND it to an authorized repair facility. TEST the system for normal operation after the repair. If the other illumination sources do not operate correctly, GO to PINPOINT TEST A .
The electronic automatic temperature control (EATC) illumination is inoperative	EATC module Smart junction box (SJB)	CHECK the other illumination sources for correct operation. If the other illumination sources operate correctly, INSTALL a new EATC module. REFER to ELECTRONIC AUTOMATIC TEMPERATURE CONTROL MODULE -- DIAGNOSTIC METHODS . TEST the system for normal operation. If the other illumination sources do not operate correctly, GO to PINPOINT TEST A .
The auxiliary climate control illumination is inoperative	Fuse Circuitry Auxiliary climate control	GO to PINPOINT TEST B .
The window control switch illumination is inoperative	Window control switch	CHECK the operation of the power windows. If the power windows operate correctly, INSTALL a new window control switch. REFER to REMOVAL AND INSTALLATION . TEST the system for normal operation. If the power windows do not operate correctly, REFER to GLASS, FRAMES AND MECHANISMS to continue diagnosis of the power windows.
The door lock control switch illumination is inoperative	Fuse Door lock control switch	GO to PINPOINT TEST G .
The steering wheel control illumination is inoperative	Circuitry Clockspring Steering wheel controls	GO to PINPOINT TEST C .
One or more module-controlled illumination source(s) is inoperative	Circuitry Illumination source Smart junction box (SJB)	GO to PINPOINT TEST D .
The control illumination is always on	Circuitry Smart junction box (SJB)	GO to PINPOINT TEST E .
The control illumination does not dim	Circuitry Instrument panel dimmer switch (part of the headlamp switch assembly) Smart junction box (SJB)	GO to PINPOINT TEST F .