| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress erroneous detection of a failure of an oil temperature sensor while suppressing delay of failure detection and decrease in detection frequency. <P>SOLUTION: An ECU executes a program including the steps of: setting a threshold value KJ, a threshold value RJ, and a threshold value SK so that these values are higher compared to when the oil temperature and the outdoor air temperature are low at starting of an engine (S150); and detecting a failure of the oil temperature sensor (S190) when the oil temperature of an automatic transmission is lower than a threshold value THO (YES in S180), in a state that the following conditions are satisfied: the elapsed time from start of the engine is the threshold value KJ or more; the accumulated time in the accelerator-on state is the threshold value RJ or more; the accumulated traveling distance of a vehicle is the threshold value SK or more (YES in S160). <P>COPYRIGHT: (C)2007,JPO&INPIT |
