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Home >> Nissan-Datsun >> 2013 >> Leaf SL >> Repair and Diagnosis >> Brakes >> Traction Control >> Brake Control System >> System Description >> System >> System Description >> Valve Operation (Abs Function And EBD Function) >> Component Parts and Function
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Component Parts and Function

Component Function
Pump Returns the brake fluid reserved in reservoir to electrically-driven intelligent brake unit by reducing pressure.
Motor Activates the pump according to signals from control unit part.
Cut valve 1
Cut valve 2
Shuts off the ordinary brake line from electrically-driven intelligent brake unit.
Suction valve 1
Suction valve 2
Supplies the brake fluid from electrically-driven intelligent brake unit to the pump.
ABS IN valve Switches the fluid pressure line to increase or hold according to signals from control unit part.
ABS OUT valve Switches the fluid pressure line to hold or decrease according to signals from control unit part.
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 to electrically-driven intelligent brake unit by bypassing orifice of each valve when brake is released.
Reservoir Temporarily reserves the brake fluid drained from brake caliper, so that pressure efficiently decreases when decreasing pressure of brake caliper.
Master cylinder pressure sensor Detects the brake fluid pressure from master cylinder part and transmits signal to ABS actuator and electric unit (control unit).