| 摘要 |
<p>In order to make it possible to perform a faster and more reliable diagnosis of an error of a pressure sensor than the prior art by a simple structure and without providing a dedicated circuit for the error analysis or additional components, if a vehicle is in a no load running state (S202) and when currents which are supplied to a pressure regulation valve (12) and which are required to set a rail pressure to a plurality of predetermined diagnosis pressures are out of a predetermined allowable range more than a predetermined number of times (S208 to S212), an error warning is given as an error of a pressure sensor (11) (S220, S222). The predetermined allowable range is determined with reference to a reference correlation which is obtained by correcting a standard correlation which represents a correlation between a current supplied to a preset standard pressure regulation valve and the rail pressure, on the basis of current supply characteristics of an actual pressure regulation valve (12).</p> |
