B3000 SE Regular Cab 4WD V6-3.0L OHV (1998)
Wheel Speed Sensor: Description and Operation
(4WABS)
The anti-lock brake system uses three variable-reluctance sensors to determine vehicle speed. The anti-lock brake sensors operate on magnetic
induction principle. As the teeth on the anti-lock brake sensor indicator rotate past the stationary sensor, a signal proportional to the speed of the
rotation is generated and sent to the anti-lock brake control module through a twisted cable and shielded wiring harness.
The front anti-lock brake sensors are non-adjustable. The front anti-lock brake sensors and the front anti-lock brake sensor indicators are replaced
separately.
The front anti-lock brake sensors are attached to the front wheel spindles. The front anti-lock brake sensor indicators are pressed onto the wheel hubs.
The rear anti-lock brake sensor is located on top of the differential case. The rear anti-lock brake sensor indicator is located inside the rear differential
case.