Control apparatus of a continuously variable transmission

A transmission mechanism of a continuously variable transmission in a vehicle comprises a primary pulley and a secondary pulley which are provided with a first cylinder chamber and a second cylinder chamber with groove widths of which are changed by supplying hydraulic pressure, and a belt is provided between the pulleys. A hydraulic pressure to the first cylinder chamber is controlled by a CVT control unit via a shift control valve according to a driving state of the vehicle, and the second cylinder chamber is continuously supplied with a working pressure. The CVT control unit includes an internal memory to maintain a power system fault flag corresponding to the failure information that was entered from an engine control unit. When holding a fault information at the start of driving the internal memory indicating that the electric motor which drives a hydraulic pump, was disrupted in the previous driving, the CVT control unit issues a shift command, which has a high area ratio for a predetermined time to the destination, thereby filling the first cylinder chamber by hydraulic pressure and thereafter outputs a shift command, which has a normal gear ratio in accordance with the drive state to the goal.