Inspection Chart For Trouble Symptoms: Notes
TROUBLE SYMPTOMS CHART
| Trouble symptom | Suspect area | Reference | |
|---|---|---|---|
| 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 PCM is not functioning. |
Malfunction of diagnosis line | INSPECTION PROCESS FOR TROUBLE SYMPTOMS | |
| Malfunction of connector | |||
| Malfunction of the 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 | INSPECTION PROCEDURE 2 |
| 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" 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 | INSPECTION PROCEDURE 2 | |
| 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 | INSPECTION PROCEDURE 4 | |
| 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 | INSPECTION PROCEDURE 4 | |
| 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 | INSPECTION PROCEDURES |
| 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. |
Abnormal underdrive clutch pressure | INSPECTION PROCEDURE 7 | |
| 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 | INSPECTION PROCEDURE 8 | |
| 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 | INSPECTION PROCEDURE 9 | |
| Malfunction of the oil pump | |||
| Malfunction of the valve body | |||
| Malfunction when shifting | Shocks and running up If shocks occur when driving due to upshifting or downshifting 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, brake or clutch. |
Abnormal line pressure | INSPECTION PROCEDURE 10 |
| 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 solenoid valve. |
Malfunction of the output shaft speed sensor | INSPECTION PROCEDURE 11 |
| Malfunction of the throttle position sensor | |||
| Malfunction of each solenoid valve | |||
| Abnormal line pressure | |||
| Malfunction of the valve body | |||
| Malfunction of the PCM | |||
| 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 | INSPECTION PROCEDURE 12 | |
| Does not shift | No diagnosis codes If shifting does not occur while driving and no diagnosis codes are set, the cause is probably a malfunction of the transaxle range switch, or PCM |
Malfunction of the transaxle range | INSPECTION PROCEDURE 12 |
| Malfunction of the PCM | |||
| Malfunction while driving | Poor a acceleration If acceleration is poor even if downshifting occurs while driving, the cause is probably a malfunction of the engine system, brake or clutch. |
Malfunction of the engine system | INSPECTION PROCEDURES |
| Malfunction of the brake of 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 | INSPECTION PROCEDURES |