| 摘要 |
A fault diagnosis method is provided in which it is possible to determine whether the input shaft speed sensor of the automatic transmission is faulty by using the signals of the output shaft speed sensor, the brake switch, the engine speed sensor and so on, without making use of the signal of the vehicle speed sensor. Moreover, even if there are faults in the output shaft speed sensor or if the shift lever is positioned in the parking P range or the neutral N range, or if the engine speed is lower than the stall speed, the fault diagnosis method for the input shaft speed sensor can be performed, and additionally, a possibility of a misjudgment caused by a bad N-D hydraulic pressure response at an extremely low temperature can be removed. |
