Function Of Components

Components

Functions

Front speed sensor (Semiconductor speed sensor, magnetic sensor rotor)

• Detects the wheel speed and sends a signal to the skid control ECU.

• The front speed sensor (semiconductor speed sensor) with the integrated bearing and the sensor rotor (magnetic sensor rotor) are installed on the front axle hub.

• The magnetic sensor rotor is equipped with north and south poles (48 of each), which are evenly spaced around its circumference.

• The magnetic field changes as the magnetic sensor rotor rotates. The semiconductor speed sensor detects the change and outputs it as the vehicle speed pulse.

Skid control sensor (Semiconductor speed sensor, magnetic sensor rotor)

• The skid control sensor (semiconductor speed sensor) and the sensor rotor (magnetic sensor rotor) are installed on the rear axle carrier.

• The skid control sensor has the same structure and functions as the front speed sensor.

Skid control ECU (Housed in brake actuator)

• Processes the signals from the sensors to control the ABS.

• Sends and receives control signals to and from the ECM via CAN communication.

Brake actuator

• Consists of the master cylinder cut solenoid valve, holding solenoid valve, pump motor, and reservoir, and adjusts the brake fluid pressure applied to each wheel cylinder.

• Houses the skid control ECU.

Solenoid relay

• Supplies power to each solenoid.

• Housed in the skid control ECU.

ABS warning light

• Illuminates to inform the driver that a malfunction in the ABS has occurred.

• Blinks to indicate DTCs that relate to the ABS.

BRAKE warning light

• Illuminates to inform the driver that the parking brake is ON when the system is normal, and when the brake fluid has decreased.

• Illuminates to inform the driver that a malfunction in the EBD has occurred.

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