Symptom Chart

NOTE: Refer to SYSTEM WIRING DIAGRAMS for connector numbers stated in the pinpoint test.

SYMPTOM

Condition	Possible Sources	Action
No communication with the speed control actuator	Central junction box (CJB) fuse 8 (10A). Circuitry. Speed control actuator.	Go To PINPOINT TEST A: NO COMMUNICATION WITH THE SPEED CONTROL ACTUATOR .
Unable to enter self-test	Speed control actuator.	Go To PINPOINT TEST B: UNABLE TO ENTER SELF-TEST .
The speed control is inoperative - no DTCs	Circuitry. Speed control actuator switch. Speed control actuator.	Go To PINPOINT TEST H: THE SPEED CONTROL IS INOPERATIVE - NO DTCS .
The set speed fluctuates	Anti-lock brake control module. Speed control actuator cable. Throttle lever. Speed control actuator.	Go To PINPOINT TEST I: THE SET SPEED FLUCTUATES .
The speed control switch is inoperative - COAST	Speed control actuator switch. Speed control actuator.	Go To PINPOINT TEST J: THE SPEED CONTROL SWITCH IS INOPERATIVE - COAST .
The speed control switch is inoperative - SET/ACCEL	Speed control actuator switch. Speed control actuator.	Go To PINPOINT TEST K: THE SPEED CONTROL SWITCH IS INOPERATIVE - SET/ACCEL .
The speed control switch is inoperative - RESUME	Speed control actuator switch. Speed control actuator.	Go To PINPOINT TEST L: THE SPEED CONTROL SWITCH IS INOPERATIVE - RESUME .
The speed control switch is inoperative - OFF	Speed control actuator switch. Speed control actuator.	Go To PINPOINT TEST M: THE SPEED CONTROL SWITCH IS INOPERATIVE - OFF .