Symptom Chart

WARNING: This page is about a different car, the 2005 Mercury Mountaineer and 2005 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.

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)