Device for detecting failure location of automatic transmission and automatic transmission provided with the same

摘要

There are provided a shift monitoring means (10c) configured to monitor a current shift stage of a stepwise automatic transmission; and a malfunction sensing means (11d) configured to sense a generation of a malfunction and a mode of the malfunction from a behavior of a vehicle which is generated in accordance with a behavior of the vehicle; and a malfunction part limiting means (10e) configured, when the generation of the malfunction is sensed by switching of the shift stage, to limit the malfunctioned frictional engagement element based on the mode of the malfunction, and a combination of the frictional engagement elements in which the malfunction is generated. With this, it is possible to rapidly identify a limp home shift stage during a traveling, and to shift to the limit home shift stage so as not to provide a large stress to a driver.