System Description [07/2015 - ]

FUNCTION DESCRIPTION
1. Enhanced-VSC (Cooperative Control with EPS)
  1. Effects cooperative control with the power steering ECU assembly in order to provide steering assist in accordance with the operating conditions of the vehicle.
2. Anti-lock Brake System (ABS)
  1. The ABS helps prevent the wheels from locking when the brakes are applied firmly or when braking on a slippery surface.
3. Electronic Brake Force Distribution (EBD)
  1. The EBD utilizes ABS, achieving proper brake force distribution between the front and rear wheels in accordance with the driving conditions. In addition, during braking while cornering, the EBD also controls the brake forces of the right and left wheels, helping maintain vehicle behavior.
4. Brake Assist (BA)
  1. The primary purpose of brake assist is to provide an auxiliary brake force to assist a driver who cannot generate a large brake force during emergency braking, thus helping ensure the vehicle's braking performance.
5. Traction Control (TR(A)C)
  1. The TR(A)C helps restrain the slippage of the drive wheels if the driver depresses the accelerator pedal excessively when starting off or accelerating on a slippery surface.
6. Vehicle Stability Control (VSC)
  1. The VSC helps restrain sideways slippage of the vehicle during a strong front wheel skid or strong rear wheel skid, which may occur while cornering.
7. Hill-start Assist Control
  1. When starting uphill, this control maintains the brake hydraulic pressure to the 4 wheels, in order to momentarily prevent the vehicle from descending backward.
8. Dynamic Radar Cruise Control (w/ Dynamic Radar Cruise Control)
  1. When the driving support ECU assembly determines that a large deceleration is required based on the distance to the preceding vehicle and the relative vehicle speed during the dynamic radar cruise control system operation, the skid control ECU operates the brake system according to the signal from the driving support ECU assembly.
9. Pre-collision Control (w/ Pre-collision Control)
  1. When the driving support ECU assembly determines a high possibility of collision, the skid control ECU activates the pre-collision brake assist or the pre-collision brake according to the signal from the driving support ECU assembly.

FUNCTION OF COMPONENTS

Component		Function
Brake Actuator Assembly	Skid Control ECU	Judges the vehicle driving condition based on the signals from each sensor, and sends the brake control signals to the brake actuator.
	Master Cylinder Pressure Sensor	Assembled in the brake actuator assembly, detects the master cylinder pressure.
	Pump Motor	Drives the pumps inside the brake actuator assembly.
	Solenoid Valves	Change the fluid path based on the signals from the skid control ECU during the operation of the brake control system functions, in order to control the fluid pressure applied to the wheel cylinders.
Skid Control ECU	ABS Motor Relay	Supplies power to the pump motor.
Skid Control ECU	ABS Solenoid Relay	Supplies power to the solenoid valves.
Speed Sensor		Detects the wheel speed of each of the 4 wheels.
Integration Control and Panel Assembly	VSC OFF Switch	Enables the driver to select the normal mode, TR(A)C off mode or VSC off mode.
Stop Light Switch Assembly		Detects the brake pedal depressing signal.
Brake Pedal Support Assembly	Brake Pedal Load Sensing Switch	Detects the brake pedal load.
Main Body ECU (Multiplex Network Body ECU)		Transmits the parking brake switch signal to the skid control ECU.
Parking Brake Switch Assembly		Detects the parking brake pedal status.
ECM		Sends the throttle position signal, accelerator pedal position signal and engine speed signal to the skid control ECU. Controls the engine output based on the signals received from the skid control ECU.
Airbag Sensor Assembly	Yaw Rate and Acceleration Sensor	Detects the vehicle's longitudinal and lateral acceleration. Detects the vehicle's yaw rate. The airbag sensor assembly sends the detection signals from the yaw rate sensor and acceleration sensor to the skid control ECU via CAN communication.
Steering Angle Sensor		Detects the steering direction and angle of the steering wheel.
Power Steering ECU Assembly		Operates cooperatively with the skid control ECU to control the steering assist torque.
Combination Meter Assembly	ABS Warning Light	Illuminates to alert the driver when the skid control ECU detects a malfunction in the ABS.
	Brake Warning Light	Illuminates to alert the driver when the skid control ECU detects a malfunction in the EBD. Illuminates to alert the driver when the brake fluid level is low.
	VSC OFF Indicator Light	Illuminates to inform the driver when VSC off mode is selected.
	Slip Indicator Light	Blinks to inform the driver when the TR(A)C or VSC is operational. Illuminates to alert the driver when the skid control ECU detects a malfunction in the TR(A)C, VSC or hill-start assist control.
	Multi-information Display (TR(A)C OFF Message)	Displays the information message when TR(A)C off mode or VSC off mode is selected.
Brake Master Cylinder Reservoir Assembly	Brake Fluid Level Warning Switch	Detects the brake fluid level.