200SX SE-R L4-1998cc 2.0L DOHC MFI (SR20DE) (1998)
Wheel Speed Sensor: Description and Operation
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 sensor
is installed on the back side of the brake rotor. Sine-wave current is generated by the sensor as the wheel rotates. The frequency and voltage increase(s)
as the rotating speed increases.