Electronic control unit
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United States of America Patent
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Aug 25, 2015
Grant Date -
Apr 25, 2013
app pub date -
Oct 17, 2012
filing date -
Oct 21, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A processor of an electronic control unit performs at least one of a first diagnosis process of determining whether or not a switching element is abnormal based on a signal output from an abnormality diagnosis circuit in a state where a first diagnosis voltage supply circuit is controlled to supply a first diagnosis voltage to a control line and a second diagnosis process of determining whether or not a pilot signal line is abnormal based on the signal output from the abnormality diagnosis circuit obtained in a state where a second diagnosis voltage supply circuit is controlled to supply a second diagnosis voltage to the pilot signal line.
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