Symptom Chart

SYMPTOM CHART

Condition	Possible Sources	Action
No communication with the instrument cluster	Fuse(s) Circuitry Instrument cluster	REFER to INSTRUMENT CLUSTER .
No communication with the smart junction box (SJB)	Circuitry SJB	REFER to MULTIFUNCTION ELECTRONIC MODULES .
The control illumination is inoperative	Fuse Smart junction box (SJB)	GO to PINPOINT TEST A .
The instrument cluster illumination is inoperative	Instrument cluster	CHECK the audio unit illumination for correct operation. If the audio unit illumination operates correctly, INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER . TEST the system for normal operation. If the audio unit illumination does not operate correctly, REFER to MODULE COMMUNICATIONS NETWORK to continue diagnosis of the communications network.
The audio unit illumination is inoperative	Audio unit	CHECK the instrument cluster illumination for correct operation. If the instrument cluster illumination operates correctly, REMOVE the audio unit. REFER to INFORMATION AND ENTERTAINMENT SYSTEM . SEND it to an authorized repair facility. TEST the system for normal operation after the repair. If the instrument cluster illumination does not operate correctly, REFER to MODULE COMMUNICATIONS NETWORK to continue diagnosis of the communications network.
The auxiliary climate control illumination is inoperative	Circuitry Auxiliary climate control assembly	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 GLASS, FRAMES AND MECHANISMS . 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	Circuitry Door lock control switch	GO to PINPOINT TEST D
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 Smart junction box (SJB)	GO to PINPOINT TEST F .