ABS Actuator and Electric Unit (Control Unit)
The ABS actuator and electric unit (control unit) is located the right side of the engine room. Electric unit (control unit) is integrated with actuator and comprehensively controls VDC function, TCS (Traction Control System) function, ABS function, EBD (Electric Brake Distribution) function and brake assist function.
ELECTRIC UNIT (CONTROL UNIT)
- Brake fluid pressure, engine and transmission are controlled according to signals from each sensor.
- If malfunction is detected, the system enters fail-safe mode.
ACTUATOR
The following components are integrated with ABS actuator:
Pump
Returns the brake fluid reserved in reservoir to master cylinder by reducing pressure.
Motor
Activates the pump according to signals from ABS actuator and electric unit (control unit).
Motor Relay
Operates the motor ON/OFF according to signals from ABS actuator and electric unit (control unit).
Actuator Relay
Operates each valve ON/OFF according to signals from ABS actuator and electric unit (control unit).
ABS IN Valve and ABS OUT Valve
Increases, holds or decreases the fluid pressure of each caliper according to signals from ABS actuator and electric unit (control unit).
Pressure Sensor
Detects the brake fluid pressure and transmits signal to ABS actuator and electric unit (control unit).
Cut Valve 1 (Primary Line) and Cut Valve 2 (Secondary Line)
Shuts off the ordinary brake line from master cylinder when VDC function, TCS function and brake assist function are activated.
Yaw Rate/Side/Decel G Sensor
Calculates the following information that affects the vehicle and transmits a signal to ABS actuator and electric unit (control unit): [Yaw rate/side/decel G sensor is integrated into the ABS actuator and electric unit (control unit).]
- Vehicle rotation angular velocity (yaw rate signal)
- Vehicle lateral acceleration (side G signal)
- Vehicle longitudinal acceleration (decel G signal)