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Traction Control / ABS: Anti-lock Brake System / Sensors

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abs4cap.jpg (13274 bytes)
Whenever the magnetic field around the wire changes, a voltage will be induced.

 

absensor.jpg (28522 bytes)
 axlsnsr.jpg (26763 bytes)
The front wheel speed sensor is installed in the steerning knuckle. A toothed-wheel is part of the front hub.  A shielded cable is used to screen out interference from other electrical components. A sensor an toothed wheel in the differential measures the average speed of both rear wheels.
sensor.jpg (22168 bytes) sensor2.jpg (27699 bytes)
Each sensor has a magnetic core with a coil of wire wrapped around it. As you may recall from basic electrical theory, whenever the magnetic field around a wire changes, a voltage will be induced.

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