Engine start control apparatus

The accuracy of measuring the temperature of a semiconductor element is improved, while a method for measuring the temperature using a general-purpose semiconductor element is provided at low cost. A fourth conductor 234 that is a part of a first conductor 231 connected to a power semiconductor element and is a thin line pattern extends under a chip thermometer 4. The fourth conductor 234 and the thermometer 4 are connected to each other through high thermal conductive resin.