To provide a failure diagnosing device capable of eliminating influence by noise, surely detecting short-circuit failure, specifying a cause of short-circuit failure when the short-circuit failure is detected, and selecting power distribution control according to the cause of short-circuit failure, in the failure diagnosing device used in a power distribution control device for controlling power distribution to a plurality of loads by opening and closing switch means.
This failure diagnosing device is provided with output failure detecting means on each of the plurality of switch means 31, and further provided with a primary determination means for detecting the presence or absence of output failure of the switch means 31 by the output failure detecting means 33 when one of the switch means 31 among the plurality of switch means 31 is in an opened state according to a driving signal, and a secondary determination means for stopping the driving signal, and detecting the presence or absence of the output failure again to the switch means 31 on which the output failure is determined by the primary determination means by temporarily opening all of the plurality of switch means 31.
IMANAKA TAISHIN
MORITA NAOHARU
MOROZUMI YUKI
MIZUTANI KOICHI
TOYOTA MOTOR CORP
| JP2008031979A | 2008-02-14 | |||
| JP2000074629A | 2000-03-14 | |||
| JP2008121457A | 2008-05-29 | |||
| JP2008031979A | 2008-02-14 | |||
| JP2000074629A | 2000-03-14 | |||
| JP2008121457A | 2008-05-29 |
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