Symptom Chart

Condition	Possible Sources	Action
No communication with the lighting control module (LCM)	Fuse Circuitry LCM	REFER to MODULE COMMUNICATIONS NETWORK article.
The control illumination is inoperative	Fuse Circuitry LCM	Go to Pinpoint Test A .
The instrument cluster illumination is inoperative	Instrument cluster LCM	Go to Pinpoint Test B .
The climate control illumination is inoperative	Circuitry Electronic automatic temperature control (EATC) module (if equipped) Manual climate control Driver door module (DDM)	Go to Pinpoint Test C .
The audio system illumination is inoperative	Circuitry Audio unit	Go to Pinpoint Test D .
The steering wheel control switch(es) illumination is inoperative	Circuitry Clockspring Audio/climate control switch Speed control switch Steering wheel wiring harness Clockspring	Go to Pinpoint Test E .
The power window switch illumination is inoperative	Power window switch	CHECK the operation of the power windows. If the power windows do not operate correctly, REFER to GLASS, FRAMES AND MECHANISMS article. If the power windows operate correctly, INSTALL a new power window switch. REFER to GLASS, FRAMES AND MECHANISMS article.
A single illumination source is inoperative	Fuse Circuitry Illumination source	Go to Pinpoint Test F .
The power door lock control switches illumination is inoperative	Fuse Circuitry Door lock switch(es)	Go to Pinpoint Test F .
The heated seat control switches illumination is inoperative	Fuse Circuitry Heated seat control switch(es)	Go to Pinpoint Test F .
The instrument panel illumination does not dim	Circuitry Instrument panel dimmer switch LCM	Go to Pinpoint Test G .
The overhead console (with moonroof) illumination is inoperative	Circuitry Overhead console (with moonroof)	Go to Pinpoint Test H .