INSPECTION CHART FOR TROUBLE SYMPTOMS

Items	Trouble symptom		Inspection procedure No.
Communication with MUT-II is impossible	Communication with all system is not possible		1
Communication with MUT-II is impossible	Communication with engine-A/T-ECU only is not possible		2
Engine warning lamp	The engine warning lamp does not illuminate right after the ignition switch is turned to the "ON" position		3
Engine warning lamp	The engine warning lamp remains illuminating and never goes out		4
Starting	Starting impossible (starter inoperative)	The starter is impossible to operate.	5
	Starting impossible (Starter operative but no initial combustion)	The starter is operative and cranks the engine, but none of initial combustion is in the cylinders and the engine is not started.	6
	Starting impossible (Initial combustion but no complete combustion)	The initial combustion occurs, but the engine stalls soon due to the incomplete combustion.	7
	Improper starting (Long time to start)	It is long cranking to start the engine.	7
Improper idling	Unstable idling (Rough idling, hunting)	The engine speed is not constant and changeable during the idling. Usually, the judgment can be based on the movement of the tachometer pointer, also on the vibration transmitted to the steering wheel, sift lever, vehicle body and so on.	8
	Improper idling speed	The proper idling speed is not satisfied.
	Engine stalled during idling (Die out)	The engine stalls during the idling in no relation to the vehicle movement.
Engine stalls	The engine stalls when starting the car (Pass out)	The engine stalls during the operation, or when the accelerator pedal is depressed from the idling.	9
Engine stalls	The engine stalls when decelerating	The engine stalls at the deceleration.	10
Driving	Hesitation, sag	The response of vehicle speed (engine speed) is delayed when the accelerator pedal is depressed, or the vehicle speed (engine speed) is temporarily dropped during the acceleration. These phenomena are called "hesitation" and the serious hesitation is called "sag".	12
	Poor acceleration	The engine cannot obtain the acceleration corresponding to the degree of throttle opening although the engine is smooth at the constant speed.
	Stumble	The engine speed increase is delayed when the accelerator pedal is initially depressed at the starting.
	Surge	The vehicle body is repeated to vibrate jollity in the forward and backward directions at the constant speed or acceleration.
	The feeling of impact or vibration when accelerating	The large impact feeling occurs at the acceleration.	13
	The feeling of impact or vibration when decelerating	The large impact feeling occurs at the deceleration.	14
	Knocking	Sharp sound like a hammer striking on the cylinder walls during the driving can be heard and wrongly affects the driving.	15
	Ignition timing offset	The basic ignition timing is deviated from the datum value.	16
Stopping	Run on (Dieseling)	The engine continues to run after the ignition switch is in "LOCK (OFF)" position.	17
Exhaust gas	Odor, white smoke, black smoke, high-concentration CO/HC during idling	The exhaust gas is extremely rank odor, white smoke or black smoke. The concentration of CO & HC is high during the idling.	18
Charging performance	Battery rundown	The battery is soon rundown or the charging ability of battery is small.	19
Cooling performance	Overheating	The temperature of engine cooling water is extremely high.	20
Cooling performance	Abnormal rotation of fan Motor	The fan motor is abnormally rotated when the ignition switch is in "ON" position in no relation to the engine cooling water temperature.	21
A/C performance	Poor A/C Performance	The temperature of air cooling from A/C is not efficient or very far from the target temperature.	22