In an abnormality detecting device and method for a vehicular hydraulic pressure
control circuit, which determines an abnormality that has occurred in a hydraulic
pressure control circuit including an electromagnetic control valve which generates
hydraulic pressure corresponding to a signal supplied from an electronic control
unit, and a hydraulic switch which is turned ON when the hydraulic pressure generated
by the electromagnetic control valve is equal to or higher than a predetermined
value, a power supply of the electronic control unit is kept ON for a predetermined
time after an ignition switch is turned from ON to OFF, and an abnormality that
has occurred in the hydraulic pressure control circuit is detected within the predetermined
time. Thus, it is possible to reliably detect an abnormality that has occurred
in the vehicular hydraulic pressure control circuit.
