Symptom Chart

SYMPTOM CHART

Condition	Possible Sources	Action
No communication with the front electronic module (FEM)	Circuitry FEM	REFER to MULTIFUNCTION ELECTRONIC MODULES .
No communication with the rear electronic module (REM)	Circuitry REM	REFER to MULTIFUNCTION ELECTRONIC MODULES .
No communication with the instrument cluster	Circuitry Instrument cluster	INSTRUMENT CLUSTER .
One or more module-controlled illumination source(s) is inoperative	Circuitry Component	GO to PINPOINT TEST A .
The control illumination is inoperative	Circuitry Front electronic module (FEM) Rear electronic module (REM) Instrument panel dimmer switch Auxiliary junction box (AJB) Instrument cluster	GO to PINPOINT TEST B .
The control illumination is always on	Circuitry Front electronic module (FEM) Rear electronic module (REM) Auxiliary junction box (AJB) Rear power distribution box	GO to PINPOINT TEST C .
The instrument cluster illumination is inoperative	Circuitry Instrument cluster	GO to PINPOINT TEST D .
The climate control illumination is inoperative	Dual automatic temperature control (DATC) module	INSTALL a new DATC module. REFER to CONTROL COMPONENTS .
The audio system illumination is inoperative	Audio unit	REMOVE the audio unit. REFER to AUDIO UNIT . SEND it to an authorized audio system repair facility. TEST the system for normal operation after the repair.
The instrument panel illumination does not dim	Circuitry Front electronic module (FEM) Instrument panel dimmer switch Instrument cluster	GO to PINPOINT TEST E .