Inspection Chart For Trouble Symptoms

TROUBLE SYMPTOMS

Trouble symptom		Probable cause
Communication with HI-SCAN is not possible If communication with the HI-SCAN is not possible, the cause is probably a defective diagnosis line or the TCM (PCM) is not functioning.		Malfunction diagnosis line Malfunction of connector Malfunction of the TCM (PCM)
Driving impossible	Starting impossible Starting is not possible when the selector lever is in P or N range. In such cases, the cause is probably a defective engine system, torque converter or oil pump.	Malfunction of the engine system Malfunction of the torque converter Malfunction of the oil pump
	Does not move forward If the vehicle does not move forward when the selector lever is shifted from N to D, 3, 2 or L range while the engine is idling, the cause is probably abnormal line pressure or a malfunction of the underdrive clutch or valve body.	Abnormal line pressure Malfunction of the underdrive solenoid valve Malfunction of the underdrive clutch Malfunction of the valve body
	Does not reverse If the vehicle does not reverse when the selector lever is shifted from N to R range while the engine is idling, the cause is probably abnormal pressure in the reverse clutch or low and reverse brake or a malfunction of the reverse clutch, low and reverse brake or valve body.	Abnormal reverse clutch pressure Abnormal low and reverse brake pressure Malfunction of the low and reverse brake solenoid valve Malfunction of the reverse clutch Malfunction of the low and reverse brake Malfunction of the valve body
	Does not move (forward or reverse) If the vehicle does not move forward or reverse when the selector lever is shifted to any position while the engine is idling, the cause is probably abnormal line pressure or a malfunction of the power train, oil pump or valve body.	Abnormal line pressure Malfunction of power train Malfunction of the oil pump Malfunction of the valve body
Malfunction when starting	Engine stalling when shifting If the engine stalls when the selector lever is shifted from N to D or R range while the engine is idling, the cause is probably a malfunction of the engine system, damper clutch solenoid valve, valve body or torque converter (damper clutch malfunction).	Malfunction of the engine system Malfunction of the damper clutch control solenoid valve Malfunction of the valve body Malfunction of the torque converter (Malfunction of the damper clutch)
	Shocks when changing from N to D and large time lag If abnormal shocks or a time lag of 2 seconds or more occur when the selector lever is shifted from N to D range while the engine is idling, the cause is probably abnormal underdrive clutch pressure or a malfunction of the underdrive clutch, valve body or idle position switch.	Abnormal underdrive clutch pressure Abnormal low and reverse brake pressure Malfunction of the underdrive solenoid valve Malfunction of the valve body Malfunction of the idle position switch
	Shocks when changing from N to R and large time lag If abnormal shocks or a time lag of 2 seconds or more occur when the selector lever is shifted from N to R range while the engine is idling, the cause is probably abnormal reverse clutch pressure or low and reverse brake pressure, or a malfunction of the reverse clutch, low and reverse brake, valve body or idle position switch.	Abnormal reverse clutch pressure Abnormal low and reverse brake pressure Malfunction of the low and reverse solenoid valve Malfunction of the reverse clutch Malfunction of the low and reverse brake Malfunction of the valve body Malfunction of the idle position switch
	Shocks when changing from N to D, N to R and large time lag If abnormal shocks or a time lag of 2 seconds or more occur when the selector lever is shifted from N to D range and from N to R range while the engine is idling, the cause is probably abnormal line pressure or a malfunction of the oil pump or valve body.	Abnormal line pressure Malfunction of the oil pump Malfunction of the valve body
Malfunction when shifting	Shocks and running up If shocks occur when driving due to up shifting or down shifting and the transmission speed becomes higher than the engine speed, the cause is probably abnormal line pressure or a malfunction of a solenoid valve, oil pump, valve body or of a brake or clutch.	Abnormal line pressure Malfunction of each solenoid valve Malfunction of the oil pump Malfunction of the valve body Malfunction of each brake or each clutch
Displaced shifting points	All points If all shift points are displaced while driving, the cause is probably a malfunction of the output shaft speed sensor, TPS or of a solenoid valve.	Malfunction of the output shaft speed sensor Malfunction of the throttle position sensor Malfunction of each solenoid valve Abnormal line pressure Malfunction of the valve body Malfunction of the TCM (PCM)
Displaced shifting points	Some points If some of the shift points are displaced while driving, the cause is probably a malfunction of the valve body, or it is related to control and is not an abnormality.	Malfunction of the valve body
Does not shift	No diagnosis codes If shifting does not occur while driving and no diagnosis codes are output, the cause is probably a malfunction of the transaxle range switch, or TCM (PCM)	Malfunction of the transaxle range Malfunction of the TCM (PCM)
Malfunction while driving	Poor acceleration If acceleration is poor even if down shifting occurs while driving, the cause is probably a malfunction of the engine system or of a brake or clutch.	Malfunction of the engine system Malfunction of the brake or clutch
Malfunction while driving	Vibration If vibration occurs when driving at constant speed or when accelerating and deceleration in top range, the cause is probably abnormal damper clutch pressure or a malfunction of the engine system, damper clutch control solenoid valve, torque converter or valve body.	Abnormal damper clutch pressure Malfunction of the engine system Malfunction of the damper clutch control solenoid valve Malfunction of the torque converter Malfunction of the valve body
Transaxle range switch system The cause is probably a malfunction of the inhibitor switch circuit, ignition switch circuit or a defective TCM (PCM).		Malfunction of the transaxle range switch Malfunction of the ignition switch Malfunction of connector Malfunction of the TCM (PCM)
Idle position switch system The cause is probably a defective idle position switch circuit, or a defective TCM (PCM).		Malfunction of the triple pressure switch Malfunction of connector Malfunction of the TCM (PCM)
Triple pressure switch system The cause is probably a defective dual pressure switch circuit or a defective TCM (PCM).		Malfunction of the triple pressure switch Malfunction of connector Malfunction of A/C system Malfunction of the TCM (PCM)
Vehicle speed sensor system The cause is probably a defective vehicle speed sensor circuit or a defective TCM (PCM).		Malfunction of the vehicle speed sensor Malfunction of connector Malfunction of the TCM (PCM)