Electric Servo Brake System Description - Components
Components
The electric servo brake system consists of the following primary components:
- Electric servo brake control unit/pedal feel simulator
- Tandem motor cylinder
- Brake pedal stroke sensor
- System indicator
For locations of each component on the vehicle, refer to Component Location Index , and for functions of the indicator, refer to How to Troubleshoot the Electric Servo Brake System .
Electric Servo Brake Control Unit/Pedal Feel Simulator
The electric servo brake control unit/pedal feel simulator consists of the electric servo brake control unit, master cylinder, pedal force simulator, pedal feel simulator valve (PFSV), master cylinder cut valves (MCV), and hydraulic pressure sensors. It reproduces the feel when the brake pedal is pressed.
Tandem Motor Cylinder
The tandem motor cylinder is composed of the motor, the gearbox, and the slave cylinder. The electric servo brake control unit drives the motor, whose movement is transmitted through the gearbox, in order to move the piston in the slave cylinder and generate fluid pressure.
Brake Pedal Stroke Sensor
The brake pedal stroke sensor is located in the brake pedal bracket. The brake pedal stroke sensor detects the level of brake pedal force and outputs two kinds of voltage values depending on the given angle.