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Posts Tagged: active wheel speed sensor

Active wheel speed sensor

Active wheel speed sensor What is an active wheel speed sensor An active wheel speed sensor detects the presence of a magnetic field and reports that presence as a square wave DC digital on/off signal, as opposed to an analog AC signal generated by a passive wheel speed sensor . When used in an anti-lock brake system, the sensor detects the alternating the north/south poles of a rotating multipole magnetic ring, usually inserted into the wheel bearing. As the wheel bearing rotates, the active wheel speed sensor detects the pole … Read More

Wheel speed sensor

Wheel speed sensors — How they work and the two types What does a wheel speed sensor do? Wheel speed sensors track the rotation speed of each wheel (in most vehicles *) and report the speed in either analog or digital format to the Anti-lock Brake Module (ABS Module). The ABS module compares the speed reading from each wheel. If the ABS module senses that one wheel is slowing down faster than the other wheels, it concludes that the slowing wheel is losing traction with the road (due to water, … Read More


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