Symptom Chart

SYMPTOM CHART

Condition	Possible Sources	Action
The speed control is inoperative - no flash codes	Speed control switches Circuitry Clockspring Throttle body linkage Speed control cable Stoplamp switch Speed control deactivator switch Stoplamp bulbs Transmission range (TR) sensor (automatic transaxle) Clutch pedal position (CPP) switch (manual transaxle) Speed control actuator Smart junction box (SJB) Anti-lock brake system (ABS) module.	GO to PINPOINT TEST A .
The set speed fluctuates	Accelerator cable Base engine concern Speed control cable Speed control actuator Anti-lock brake system (ABS) speed control ABS module	GO to PINPOINT TEST B .
The speed control does not disengage when the brakes are applied	Circuitry Stoplamp switch Speed control deactivator switch Speed control cable Accelerator cable Speed control actuator	GO to PINPOINT TEST C .
The speed control does not disengage when the clutch is applied	Circuitry Clutch pedal position (CPP) switch Speed control cable Speed control actuator Accelerator cable Powertrain control module (PCM)	GO to PINPOINT TEST D .
A single speed control button is inoperative	Speed control switch Speed control actuator	GO to PINPOINT TEST E .
Self-test will not start or complete after multiple attempts	Circuitry Speed control switch Speed control actuator	GO to PINPOINT TEST A .
Flash Code 0 - no flash after last switch pressed	Circuitry Speed control switch	GO to PINPOINT TEST E .
Flash Code 1 - Flash with last switch pressed, but no dynamic pull occurs at the throttle and the speed control is inoperative	Speed control cable Speed control actuator	GO to PINPOINT TEST F .
Flash Code 1 - Flash with last switch pressed, dynamic pull occurs at throttle and the speed control is inoperative	Speed control switches Circuitry Clockspring Throttle body linkage Speed control cable Stoplamp switch Speed control deactivator switch Stoplamp bulbs Transmission range (TR) sensor (automatic transaxle) Clutch pedal position (CPP) switch (manual transaxle) Speed control actuator Smart junction box (SJB) Anti-lock brake system (ABS) module	GO to PINPOINT TEST A .
Flash Code 2 - stoplamp switch circuit failure	Circuitry Stoplamp switch Stoplamp bulbs Speed control actuator	GO to PINPOINT TEST G .
Flash Code 3 - speed control deactivator switch circuit failure	Circuitry Speed control deactivator switch Speed control actuator Smart junction box (SJB)	GO to PINPOINT TEST H .
Flash Code 4 - clutch/neutral switch circuit failure	Circuitry Clutch pedal position (CPP) switch (manual transaxle) Transmission range (TR) sensor (automatic transaxle) Speed control actuator Powertrain control module (PCM)	GO to PINPOINT TEST I .
Flash Code 5 - speed control actuator internal failure	Speed control actuator	INSTALL a new speed control actuator. REFER to SPEED CONTROL ACTUATOR . TEST the system for normal operation.
The speed control drops out when pressing buttons	Circuitry Speed control switch	GO to PINPOINT TEST E .
The speed control drops out when pressing 2 or more buttons simultaneously	Normal condition	ADVISE the customer that when 2 buttons are pressed simultaneously, the speed control system enters a stand-by mode. Pressing the RESUME returns the vehicle to the memory speed.
The speed control is hard to set	ON switch and SET switch operation	ADVISE the customer that the ON switch must be pressed and released before the SET/ACCEL switch is pressed.
The vehicle does not slow down after deactivating the speed control	Base engine operation	CHECK for service bulletins related to engine calibration and REPAIR if required. The speed control system does not control the vehicle speed when deactivated. ADVISE the customer the brakes must be applied to slow the vehicle.
The speed control is inoperative when towing a trailer	Aftermarket trailer tow wiring harness	ADVISE the customer that the factory trailer tow wiring harness must be used.
The speed control indicator lamp is never/always on	Circuitry Speed control actuator Instrument cluster	REFER to INSTRUMENT CLUSTER to continue diagnosis of the speed control indicator lamp.