In an ABS system, which component monitors wheel speed and sends data to the computer?

In an ABS system, which component monitors wheel speed and sends data to the computer?

• A. The hydraulic pump.
• B. The ABS sensing device.
• C. The steering sensor.
• D. The brake fluid reservoir.

Answer: (B)

Wheel speed data is what the ABS uses to protect against lockup. Each wheel has a wheel speed sensor that reads how fast that wheel is turning and sends a signal to the ABS control module. By monitoring these speeds, the computer can detect when one wheel is slowing much faster than the others and intervene to modulate brake pressure accordingly. That sensing device is specifically designed for this job, so it’s the component responsible for monitoring wheel speed and feeding data to the computer. The hydraulic pump is part of applying brake pressure, the steering sensor (used for different vehicle dynamics inputs), and the brake fluid reservoir simply stores fluid.

Wheel speed data is what the ABS uses to protect against lockup. Each wheel has a wheel speed sensor that reads how fast that wheel is turning and sends a signal to the ABS control module. By monitoring these speeds, the computer can detect when one wheel is slowing much faster than the others and intervene to modulate brake pressure accordingly. That sensing device is specifically designed for this job, so it’s the component responsible for monitoring wheel speed and feeding data to the computer. The hydraulic pump is part of applying brake pressure, the steering sensor (used for different vehicle dynamics inputs), and the brake fluid reservoir simply stores fluid.