Patent ID: 7252620

Claim:
A control device for a drive system of a vehicle, the drive system comprising an engine, a transmission, a torque converter which transmits an output torque of the engine to the transmission via a fluid, a lockup clutch which operates between an engaged state in which the engine and the transmission are directly engaged and a disengaged state in which the engine and the transmission are not directly engaged, an accessory driven by the engine in response to an accessory drive request signal, and a fuel supply device which performs and cuts off fuel supply to the engine according to a running condition of the vehicle, the control device comprising: a programmable controller programmed to: operate, when the accessory drive request signal has been generated in a state where the fuel supply is cut off and the lockup clutch is in the engaged state, the lockup clutch to enter the disengaged state; determine whether or not the lockup clutch has been in the disengaged state; and control the engine to start driving the accessory and control the fuel supply device to resume fuel supply, only when the lockup clutch has been in the disengaged state.