Symptom Chart: Notes

SYMPTOM CHART

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