Altima GXE L4-2.4L (KA24DE) (1999)
Wheel Speed Sensor: Description and Operation
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
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.