Symptom Chart

SYMPTOM CHART

Condition	Possible Sources	Action
No communication with the instrument cluster	Circuitry Standard corporate protocol (SCP) communication network Instrument cluster	REFER to INSTRUMENT CLUSTER to continue diagnosis of the communication circuits.
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 Front 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	Circuitry Component	GO to PINPOINT TEST C .
A single illumination source is inoperative - passenger power window control switch	Switch	INSTALL a new switch. TEST the system for normal operation.
The steering wheel control switch(es) are inoperative	Circuitry Clockspring Switch(es)	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 .