Cruise Control System Symptom Diagnosis

NOTE:

Before performing this Cruise Control System Symptom Diagnosis, perform cruise control system check referring to CRUISE CONTROL SYSTEM CHECK .
Check each part in the order from the top of the following list.

Condition	Possible Cause	Action
"CRUISE" or "SET" indicator light does not turn ON or OFF	MAIN (ON/OFF) switch faulty	Check MAIN (ON/OFF) switch for function referring to CRUISE CONTROL SWITCH INSPECTION .
	SET/COAST switch faulty	Check SET/COAST switch for function referring to CRUISE CONTROL SWITCH INSPECTION .
	Brake light switch faulty	Check brake light switch for function referring to BRAKE LIGHT SWITCH INSPECTION .
	Wiring or grounding faulty	Repair .
	Combination meter faulty	Replace .
	ECM faulty	Replace after making sure that none of above parts is faulty .
Vehicle speed can not be set	MAIN (ON/OFF) switch faulty	Check MAIN (ON/OFF) switch for function referring to CRUISE CONTROL SWITCH INSPECTION .
	SET/COAST switch faulty	Check SET/COAST switch for function referring to CRUISE CONTROL SWITCH INSPECTION .
	Brake light switch faulty	Check brake light switch for function referring to BRAKE LIGHT SWITCH INSPECTION .
	CPP switch faulty (M/T model)	Check CPP switch for function referring to CPP SWITCH (FOR CRUISE CONTROL) INSPECTION AND ADJUSTMENT .
	Wiring or grounding faulty	Repair .
	ECM faulty	Replace after making sure that none of above parts is faulty .
Acceleration or deceleration is not available by using RES/ACC or SET/COAST switch	RES/ACC or SET/COAST switch faulty	Check RES/ACC or SET/COAST switch for function referring to CRUISE CONTROL SWITCH INSPECTION .
	Wiring or grounding faulty	Repair .
	ECM faulty	Replace after making sure that none of above parts is faulty .
Cruise control cannot be cancelled	CANCEL switch faulty	Check CANCEL switch for function referring to CRUISE CONTROL SWITCH INSPECTION .
	Brake light switch faulty	Check brake light switch for function referring to BRAKE LIGHT SWITCH INSPECTION .
	CPP switch faulty (M/T model)	Check CPP switch for function referring to CPP SWITCH (FOR CRUISE CONTROL) INSPECTION AND ADJUSTMENT .
	Wiring or grounding faulty	Repair .
	ECM faulty	Replace after making sure that none of above parts is faulty .
Cruise control at vehicle speed stored in memory cannot be resumed after cruise control was cancelled by means other than MAIN (ON/OFF) switch	RES/ACC switch faulty	Check RES/ACC switch for function referring to CRUISE CONTROL SWITCH INSPECTION .
	Wiring or grounding faulty	Repair .
	ECM faulty	Replace after making sure that none of above parts is faulty .