Symptom Chart

SYMPTOM CHART

Condition	Possible Sources	Action
No communication with the smart junction box (SJB)	Fuse Wiring, terminals or connectors SJB	REFER to MODULE COMMUNICATIONS NETWORK article.
One or more parking, rear or license plate lamps is inoperative	Fuse Wiring, terminals or connectors Bulb holder Rear lamp jumper harness Rear lamp assembly SJB	Go to Pinpoint Test O .
The parking, rear or license plate lamps are on continuously	Wiring, terminals or connectors Headlamp switch SJB	Go to Pinpoint Test P .