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.
All the stoplamps are inoperative	Fuse Wiring, terminals or connectors Stoplamp switch SJB	Go to Pinpoint Test H .
One or more stoplamps are inoperative	Wiring, terminals or connectors Rear lamp jumper harness Rear lamp assembly High mounted stoplamp SJB	Go to Pinpoint Test I .
The stoplamps are on continuously	Wiring, terminals or connectors Stoplamp switch PCM SJB	Go to Pinpoint Test J .