| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To detect opening/closing of an oil pressure switch for neutral detection by a detection device, and to detect disconnection of a wiring connected between the detection device and the switch. <P>SOLUTION: Since connection is made by two pieces of wirings 31, 32 between a second contact 18 and an ECU 40, even if one piece of wirings is disconnected, opening/closing of the oil pressure switch 16 for neutral detection can be detected by the rest of one of them. Since different voltages are applied through respective resistive voltage divider circuits 41, 42 to respective wirings 31, 32, the occurrence of disconnection can be detected by utilizing the difference between the voltage detected by the ECU 40 at opening of the oil pressure switch 16 for neutral detection when one wiring is disconnected and the voltage when the one wiring is not disconnected. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
