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.

POSSIBLE CAUSES

Condition	Possible Cause	Action
CRUISE or SET indicator lamp does not turn ON or OFF	MAIN switch faulty	Check MAIN 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 (stop) Lamp switch faulty	Check brake (stop) lamp switch for function referring to STOP (BRAKE) LAMP 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 switch faulty	Check MAIN 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 (stop) Lamp switch faulty	Check brake (stop) lamp switch for function referring to STOP (BRAKE) LAMP SWITCH INSPECTION
	CPP switch faulty (M/T model)	Check CPP switch for function referring to CLUTCH PEDAL POSITION (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
	Stop (brake) lamp switch faulty	Check brake (stop) lamp switch for function referring to STOP (BRAKE) LAMP SWITCH INSPECTION
	CPP switch faulty (M/T model)	Check CPP switch for function referring to CLUTCH PEDAL POSITION (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 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 .