Vehicle braking device

A vehicle braking device comprising:

• a first hydraulic pressure output unit that is connected to a master chamber of a master cylinder through a first liquid passage and outputs a hydraulic pressure to a first wheel cylinder based on a hydraulic pressure of the first liquid passage,
• a hydraulic pressure generating unit that generates a hydraulic pressure independently of the master cylinder;
• a second hydraulic pressure output unit that is connected to the hydraulic pressure generating unit through a second liquid passage and outputs a hydraulic pressure to a second wheel cylinder based on a hydraulic pressure of the second liquid passage;
• a communication control valve provided in a communication passage connecting the first liquid passage and the second liquid passage, the communication control valve being a normally closed electromagnetic valve that opens and closes the communication passage;
• and
• a master cut valve that is a normally open electromagnetic valve provided on the first liquid passage on a master cylinder side relative to a connection portion with the communication passage, wherein
• the vehicle braking device further comprises a control unit configured to selectively execute
• normal control of opening the communication control valve and closing the master cut valve so that a hydraulic pressure of the first wheel cylinder is adjustable by at least one of the hydraulic pressure generating unit and the first hydraulic pressure output unit and a hydraulic pressure of the second wheel cylinder is adjustable by at least one of the hydraulic pressure generating unit and the second hydraulic pressure output unit, and
• specific control of closing the communication control valve and opening the master cut valve so that the hydraulic pressure of the first wheel cylinder is adjustable by the first hydraulic pressure output unit and the hydraulic pressure of the second wheel cylinder is adjustable by the second hydraulic pressure output unit,
• the vehicle braking device further comprises a specific liquid leakage determination unit that determines whether liquid leakage has occurred in the first liquid passage, the second liquid passage, a liquid passage connecting the first hydraulic pressure output unit and the first wheel cylinder, or a liquid passage connecting the second hydraulic pressure output unit and the second wheel cylinder, and
• the control unit executes the specific control in a case where the specific liquid leakage determination unit determines that liquid leakage has occurred.