| 摘要 |
<P>PROBLEM TO BE SOLVED: To allow quick sensing of a fault in a hydraulic sensor system after the engine start while suppressing an increase in the number of components of an ECU in a hydraulic sensor fault sensing device and method for a vehicle. <P>SOLUTION: A hydraulic sensor fault sensing device for a vehicle includes a time measuring part (a meter control part 12) functioning as a sleep mode even when the power supply to an ECU 3 is turned off. The time measuring part measures a stop time of an engine 1 during the sleep mode, and transmits the stop time information to the ECU 3 when the power supply to the ECU is turned on. In order to perform fault sensing of a hydraulic switch 2 in a state that the engine 1 does not generate oil pressure, when the ECU 3 determines that the stop time of the engine 1 has elapsed more than a predetermined time on the basis of the information from the time measuring part, the ECU performs the fault sensing of the hydraulic switch 2. <P>COPYRIGHT: (C)2013,JPO&INPIT |
