G 2500 3/4 Ton Van V8-305 5.0L VIN M SFI (1997)
Wheel Speed Sensor: Description and Operation
Tone Ring
OPERATION
The front wheel speed sensor use tone wheels to produce an AC voltage signal. Tone wheels are metal rings with teeth on the outside diameter.
The AC voltage is produced as the teeth pass through the-magnetic field of the wheel speed sensor pole piece. Any imperfections in the tone
wheels, such as a broken or missing tooth, can cause an inaccurate wheel speed signal.
