Symptom Chart

SYMPTOM CHART

Condition	Possible Sources	Action
No communication with the instrument cluster	Circuitry Medium speed controller area network (CAN) Instrument cluster	REFER to INSTRUMENT CLUSTER .
The control illumination is inoperative/always on	Instrument panel dimmer switch Smart junction box (SJB) Circuitry	GO to PINPOINT TEST F .
The instrument cluster illumination is inoperative	Instrument cluster Circuitry Smart junction box (SJB)	GO to PINPOINT TEST E .
The message center/odometer display inoperative or does not dim	Instrument cluster	INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER .
The climate control illumination is inoperative - front or rear (if equipped)	Circuitry Climate control assembly Rear integrated control panel (RICP)	GO to PINPOINT TEST A .
The audio system illumination is inoperative - front or rear controls	Circuitry Audio unit Rear integrated control panel (RICP)	GO to PINPOINT TEST B .
A single illumination source is inoperative	Circuit Component	GO to PINPOINT TEST C .
A single illumination source is inoperative - window control switch(es)	Window control switch(es)	INSTALL a new window control switch(es). REFER to GLASS, FRAMES AND MECHANISMS . TEST the system for normal operation.
The steering wheel control switch illumination source is inoperative	Circuitry Clockspring Speed control switch(es) Steering wheel audio control switch	GO to PINPOINT TEST D .
The control illumination is inoperative/always on	Circuitry Instrument panel dimmer switch Smart junction box (SJB)	GO to PINPOINT TEST F .