Patent ID: 8725343

Claim:
A control device for an automatic transmission that is configured to output a command signal to an actuator to control the automatic transmission, comprising: a main control section that is configured to receive a state of the automatic transmission, that is configured to determine an abnormality in the automatic transmission on the basis of an input state of the automatic transmission, and that is configured to output to the actuator a main control section command signal for controlling the automatic transmission so as to establish a predetermined shift speed when it is determined that an abnormality is occurring in the automatic transmission; and a monitoring section that is configured to determine an abnormality in the main control section and that is configured to output to the actuator a monitoring section command signal for causing the automatic transmission to establish a neutral state while blocking output of the main control section command signal when it is determined that an abnormality is occurring in the main control section, wherein: the monitoring section is configured to receive a state of the automatic transmission and the main control section command signal that is output from the main control section, and is configured to determine the abnormality in the main control section on the basis of the input state of the automatic transmission and the main control section command signal, the control device is configured to control the automatic transmission which includes a hydraulic circuit including a plurality of solenoids as the actuator, the predetermined shift speed is established by de-energizing all the plurality of solenoids and the neutral state is established by energizing only a predetermined one of the plurality of solenoids and de-energizing the other solenoids, the main control section is configured to output the main control section command signal to each of the plurality of solenoids, and the monitoring section is configured to output a signal for energizing the predetermined solenoid and de-energizing the other solenoids as the monitoring section command signal when it is determined that an abnormality is occurring in the main control section.