PROBLEM TO BE SOLVED: To provide an electronic control device for an automobile capable of ensuring safety by preventing unexpectedly abnormal high voltage from being loaded (e.g. an injector, an ignition coil and a solenoid of relay or the like) and being applied to a driving circuit.
SOLUTION: A voltage supply system is the system in which an upstream power supply of the load controlled by the electronic control device for the automobile is converted from a high voltage source into a conventional low voltage by using a voltage converter or the like. The electronic control device for the automobile for driving and controlling the load which is provided in the automobile, comprises a computing device; a driving circuit for driving each load; a control circuit for controlling the driving circuit; and an external connection condition consisting of the load and the control device, and compensates for the operation of the circuit between the voltage converter, and the load or the driving circuit when the voltage is abnormally higher than that conventionally necessary.
COPYRIGHT: (C)2004,JPO