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Home >> Audi >> 1987 >> 5000 CS, Standard >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Operation >> Speed Sensor

Speed Sensor

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A speed sensor is located next to hub on each axle. A speed sensor rotor is attached to each hub and rotates past the speed sensors. The rotary motion of the wheels is picked up by each sensor and an electrical signal is sent to the ABS control unit.