Symptom Chart

NOTE: The Self-Test Diagnostics must be carried out before proceeding to the Symptom Chart.

NOTE: New speed control diagnostic software is available on some scan tools.

Symptom Chart

Condition	Possible Sources	Action
Flash code 1 - system pass	None	Test passed.
Flash code 1 - with last switch pressed and no dynamic pull occurs at the throttle	Speed control actuator cable Speed control actuator	Go to Pinpoint Test A .
Flash code 1 - dynamic pull occurs at throttle and speed control inoperative	Circuitry Speed control actuator	Go to Pinpoint Test D .
Flash code 2 - stoplamp switch or circuit failure	Circuitry Speed control actuator	Go to Pinpoint Test B .
Flash code 3 - deactivator switch or circuit failure	Fuse Circuitry Deactivator switch Speed control actuator	Go to Pinpoint Test C .
Flash code 5	Speed control actuator	INSTALL a new speed control actuator. REFER to Speed Control Actuator . TEST the system for normal operation.
The speed control is inoperative - no flash codes	Fuse Circuitry Clockspring Speed control switches Instrument cluster Speed control actuator	Go to Pinpoint Test E .
The speed control switch is inoperative	Speed control switch Speed control actuator	Go to Pinpoint Test E .
The speed control indicator lamp is always on	Circuitry Speed control actuator Instrument cluster	Go to Pinpoint Test F .
The speed control indicator lamp is inoperative	Circuitry Bulb Instrument cluster Speed control actuator	REFER to INSTRUMENT CLUSTER article to continue diagnosis of the instrument cluster.
The set speed fluctuates	Speed control actuator Speed control actuator cable	Go to Pinpoint Test G .
	Engine	REFER to the Introduction - Gasoline Engines article.