| 摘要 |
PROBLEM TO BE SOLVED: To allow to exercise a burglary preventive function adequately, even though a backup control is carried out, in an engine control device having a burglary preventive function. SOLUTION: A second microcomputer 200 outputs an injection timing signal and an ignition timing signal to carry out the engine control, depending on the sensor signals from a rotating angle sensor 3 and the like. A first microcomputer 100 has an injection block 111 and an ignition block 112, and when the injection timing signal and the ignition timing signal are normal, it outputs those signals to the first and the second driving circuits 300 and 400, and when they are abnormal, it outputs a backup signal. The CPU 101 of the first microcomputer 100 carries out a burglary deciding, and when a burglary is decided, it turns off the switches 113 to 115, and the output to the first and the second driving circuits 300 and 400 is stopped. Consequently, even when the second microcomputer 200 is broken intentionally and a backup control is carried out, the engine control is prohibited. |
