| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electronic control device capable of identifying more accurately a defective part of a drive circuit which drives an injector. <P>SOLUTION: An EFI-ECU 20 determines abnormality of a drive circuit 26 which drives an injector 30. A first monitor circuit 27 and a second monitor circuit 28 monitor a value of surge voltage applied to an FET 262 when the FET 262 which opens/closes a current path I where a drive current for driving the injector 30 flows, opens. A CPU 22 determines a portion of the drive circuit 26 where abnormality occurs, based on outputs of the first monitor circuit 27 and the second monitor circuit 28. <P>COPYRIGHT: (C)2010,JPO&INPIT |
