A direct injection type internal combustion engine control apparatus is capable of increasing the frequency of performing the compression-stroke fuel injection following an automatic start of the engine by maintaining a sufficient fuel pressure for the compression-stroke injection even after the engine has been stopped by an automatic stop function. The method allows for detecting and diagnosing drift and failures in the processing system and taking the appropriate correcting measures. Successively, this is heated to a predetermined temperature, while applying a predetermined pressure thereto so as to bond the film heater 3 and the heat-conducting plate 1 to each other.