Symptom Chart

SYMPTOM CHART

Condition	Possible Sources	Action
No communication with the powertrain control module (PCM)	Circuitry	REFER to MODULE COMMUNICATIONS NETWORK .
	Powertrain control module (PCM)
The speed control is inoperative	Circuitry	GO to PINPOINT TEST A .
	Clockspring
	Stoplamp switch
	Speed control deactivator switch
	Speed control switch(es)
	Powertrain control module (PCM)
The speed control switch is inoperative	Powertrain control module (PCM)	Go to PINPOINT TEST A .
	Speed control switch(es)
The speed control indicator lamp is always on	Circuitry	REFER to INSTRUMENT CLUSTER .
	Instrument cluster
	Powertrain control module (PCM)