Control apparatus

A control apparatus for an automatic transmission including a torque converter with a lock-up clutch capable of connecting an output shaft of an engine and an input shaft of the automatic transmission, comprising:

• a fuel cut determination unit configured to determine, based on a control signal to control the engine, whether fuel cut to cut off fuel supply to the engine is being executed in a case in which a running state of a vehicle is a deceleration state based on detection by a detection unit configured to detect the running state of the vehicle;
• a state determination unit configured to determine, based on an operation signal from an ABS device, whether the ABS device of the vehicle is in a normally operating state or in a fail state in which the ABS device does not normally operate;
• a rotation speed determination unit configured to determine whether a rotation speed of the input shaft detected by a rotation speed detection unit is not less than a reference rotation speed corresponding to a gear range of the automatic transmission;
• and
• an operation control unit configured to control engagement of the lock-up clutch based on an operation state of the ABS device and a result of comparison between the rotation speed of the input shaft and the reference rotation speed in a state in which the running state of the vehicle is the deceleration state, and the fuel cut is not being executed.