The present invention relates to an electronic circuit device for controlling an engine of a vehicle by detecting an automobile theft situation as one electronic circuit device. ; It is a microcomputer that monitors the theft according to the signals of the engine and the set signal.Unlike the owner's intention, the microcomputer keeps starting when other drivers start theft. If there is no release signal preset and waiting for a signal, the car engine is automatically stopped so that the thief is recognized as a faulty vehicle and gives up car theft. ; Anti-theft, microcomputer, CPU, ECU, IC, remote control, switch,
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