Acura NSX 1997 Service Manual page 660

Main Menu Table of Contents
Anti-lock Brake System (ABS) Description
Features/Construction/Operation (cont'd)
Wheel Sensor
The wheel sensor is a contactless type, and it detects the rotating speeds of a wheel. It is composed of a permanent
magnet and coil. When the gear pulsers attached to the rotating parts of each wheel (rear wheel: outboard joint of the
driveshaft, front: hub bearing unit) turn, the magnetic flux around the coil in the wheel sensor alternates, generating volt-
ages with frequency in proportion to wheel rotating speed. These pulses are inputted into the ABS control unit, and the
ABS control unit identifies the wheel speeds.