System Description: Sensor

The sensor unit consists of a gear-shaped sensor rotor and a sensor element. The element contains a bar magnet around which a coil is wound. The front sensors are installed on the front spindles and the rear sensors are installed on the rear spindles. As the wheel rotates, the sensor generates a sine-wave pattern. The frequency and voltage increase(s) as the rotating speed increases.

Fig 1: Identifying Hydraulic System Sensor Unit

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

Fig 2: Identifying ABS Warning Lamp

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