Range Rover County LWB (LH) V8-4.2L (1993)
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Wheel Speed Sensor: Description and Operation
Wheel Speed Sensor
OPERATION
A sensor is located at each wheel, sensing a 60 tooth exciter ring. When vehicle is in motion, the speed sensors generate an AC voltage signal as
the magnetic toothed ring rotates past the stationary sensor pick-up. The Anti-Lock Brake System ECU (Z108) calculates the wheel speed by
measuring the frequency of the AC voltage signal generated by the sensors.
