| 摘要 |
A brake ECU (100) produces a differential pressure (&Dgr;Pcheck) between the upstream side and downstream side of a changeover valve (64) with the changeover valve (64) closed, and, in this state, implements the inspection of the changeover valve (64) on the basis of a variation in fluid pressure detected by a front wheel control pressure sensor (103). The open valve current characteristics of a linear control valve (67) vary depending on the open/close state of the changeover valve (64). Thus, the brake ECU (100), when opening a pressure-reduction linear control valve (67B) at the end of inspection of the changeover valve (64), corrects the current caused to flow through the pressure-reduction linear control valve (67B) so as to prevent an initial value from exceeding an open valve current. In this way, self-excited vibration caused at the time of opening the pressure-reduction linear control valve (67B) can be suppressed. |
