ABS Speed Sensor

An Anti-lock Braking System (ABS) sensor, also known as a wheel speed sensor, is a critical component of modern vehicle safety systems. Understanding its function and maintenance can help ensure your vehicle's safety and performance.

What is an ABS Wheel Sensor?

An ABS wheel sensor monitors the rotational speed of each wheel and sends this information to the ABS control module. The primary function of the ABS is to prevent wheel lock-up during hard braking, allowing the driver to maintain steering control. Here's a breakdown of how it works:

1. Detection of Wheel Speed: Each wheel has an ABS sensor that continuously monitors the wheel's rotational speed.
2. Signal Transmission: The sensor transmits this data to the ABS control module as an electrical signal.
3. Brake Pressure Modulation: If the ABS control module detects that a wheel is decelerating too rapidly, indicating a potential lock-up, it modulates the brake pressure applied to that wheel.