Control device and control method for vehicle

A control method for a vehicle, the vehicle including

• an engine,
• a rotating electric machine, the vehicle configured to travel using power of at least one of the engine or the rotating electric machine,
• a automatic transmission including an input shaft connected to the engine and the rotating electric machine,
• a collision detection sensor configured to detect whether or not a collision of the vehicle occurs,
• a first clutch provided between the rotating electric machine and the input shaft, the first clutch being configured to switch a connection state of the rotating electric machine and the input shaft between an engagement state and a release state,
• an electronic control unit,
• the control method comprising
• (i) executing a first engagement switching control by the electronic control unit, the first engagement switching control being control for switching the first clutch from the release state to the engagement state when the occurrence of the collision of the vehicle is detected by the collision detection sensor, the first clutch is in the release state, and a rotation speed of the rotating electric machine is equal to or higher than a rotation speed of the input shaft, and
• (ii) executing a release maintenance control by the electronic control unit, the release maintenance control being control for maintaining the first clutch in the release state when the occurrence of the collision of the vehicle is detected by the collision detection sensor, the first clutch is in the release state, and the rotation speed of the rotating electric machine is lower than the rotation speed of the input shaft.