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System Description: Sensor

The front sensor units consist of a gear-shaped sensor rotor and a sensor element. The element contains a magnet and IC. The front wheel sensors are installed on the front of the wheel knuckles. As the wheel rotates, the sensor generates a square-wave signal. The frequency increase as the wheel speed increases.

Fig 1: Identifying Traction Control System Sensor

Courtesy of NISSAN MOTOR CO., U.S.A.