To certainly start starting preparation of an engine by determining intention of getting on of a specified driver.

In the vehicle provided with an anti-theft system, for example, for allowing starting of the engine based on individual certification, when the intention of getting on of the specific occupant is detected by the individual certification, an injector heater, a heater of an air/fuel ratio sensor and a fuel pump are operated and a temperature and a pressure are previously enhanced to a predetermined value before the engine is actually started.