Brakes – Miscellaneous
Reexamination Certificate
2005-06-21
2005-06-21
Butler, Douglas C. (Department: 3683)
Brakes
Miscellaneous
C188S15100A, C477S906000
Reexamination Certificate
active
06907970
ABSTRACT:
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.
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patent: 6733417 (2004-05-01), Ajimoto
patent: 2004/0226785 (2004-11-01), Sugimura
patent: 5-118306 (1993-05-01), None
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patent: 2003-49937 (2003-02-01), None
Butler Douglas C.
Toyota Jidosha & Kabushiki Kaisha
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