ELECTRIC PARKING BRAKE SYSTEM SYSTEM DESCRIPTION


  1. SYSTEM DESCRIPTION


    1. The electric parking brake system controls the parking brake cable by electrically loosening and tightening the cable with the actuator.

    2. While the vehicle is stopped (the vehicle speed is 0 km/h (0 mph)), the parking brake locks and the PARK warning light turns on when the electric parking brake switch is pushed, and the parking brake releases and the PARK warning light turns off when the electric parking brake switch is pulled.

    3. While the vehicle is being driven, the lock control only operates while the electric parking brake switch is being pushed. The release control operates immediately after the switch is released.

      Tech Tips

      When the electric parking brake switch is being pushed, the PARK warning light turns on and buzzer sounds.

    4. Drive away release function


      1. The drive away release function detects the intention of the driver to start driving based on the operation of the shift lever, clutch pedal and accelerator pedal, and automatically releases the parking brake.

  2. COMPONENTS OPERATION

    Components Function
    Parking brake with bracket actuator assembly Electric parking brake ECU Controls the electric parking brake system by utilizing several signals.
    Motor Operates depending on the ECU command so that the parking brake is applied or released.
    Tension sensor Detects the parking brake cable force.
    Stroke sensor Detects the stroke of the parking brake cable.
    Parking brake cable

    Transfers the tension, which is created by the sliding of the spindle and shaft, to the rear brakes.

    For the shaft side, the cable is connected via the bearing so that the cable does not rotate together with the shaft.
    Emergency release cable Rotates the motor directly in case of an electric parking brake switch failure to allow the parking brake to be released manually.
    Yaw rate sensor Detects the inclination of the slope where the vehicle stops.
    Electric parking brake switch Detects lock or release requests from the driver.
    Brake system warning light (yellow indicator) Turns on to inform the driver when an electric parking brake ECU failure occurs, or the operation is limited due to factors in other systems.
    Multi-information display Turns on together with the brake system warning light (yellow indicator) to inform the driver when the electric parking brake system cannot be controlled due to a failure.
    PARK warning light

    • Turns on when the parking brake is applied.

    • Blinks when the electric parking brake is not available from the driver's request.
    Brake pedal stroke sensor (Clutch pedal stroke sensor)(for M/T)

    • Detects the amount of the clutch stroke.

    • Detects whether or not the clutch pedal is depressed.
    Park/neutral position switch (for M/T) Detects if the shift lever is in neutral.
    Back-up light switch (for M/T) Detects if the shift lever is in reverse.
    Skid control ECU Receives the parking brake status information from the electric parking brake ECU and outputs the stop light signal and vehicle wheel speed signal to the electric parking brake ECU.
    ECM Outputs the ECM information to the electric parking brake ECU.