Component Parts and Function

Component	Function
Pump	Feeds brake fluid by the motor.
Motor	Activates the pump according to signals from ABS actuator and electric unit (control unit).
ABS IN valve	Switches the fluid pressure line to increase or hold according to signals from control unit.
ABS OUT valve	Switches the fluid pressure line to increase, hold or decrease according to signals from control unit.
Cut valve 1 Cut valve 2	Shuts off the ordinary brake line from master cylinder, when VDC function, TCS function and brake limited slip differential (BLSD) function are activated.
Suction valve 1 Suction valve 2	Supplies the brake fluid from master cylinder to the pump, when VDC function, TCS function and brake limited slip differential (BLSD) function are activated.
Inlet valve	Brake fluid sucked from the reservoir by the pump does not backflow.
Outlet valve	Brake fluid discharged from the pump does not backflow.
Return check valve	Returns the brake fluid from brake caliper and wheel cylinder to master cylinder by bypassing orifice of each valve when brake is released.
Pressure sensor	Detects the brake fluid pressure and transmits signal to control unit.
Reservoir	Temporarily reserves the brake fluid drained from brake caliper, so that pressure efficiently decreases when decreasing pressure of brake caliper and wheel cylinder.
Damper	Reduces the vibrations travelling to the brake pedal during the operation of the VDC function, TCS function, ABS function, EBD function, or brake limited slip differential (BLSD) function.