Wheel Sensors
There are 4 variable reluctance electronic sensor assemblies. Ford Motor Co. uses 104-tooth ring. Each sensor is connected to the electronic controller through a wiring harness. The front sensors are bolted to brackets located on the front wheel spindles.
The front toothed sensor rings are pressed onto the inside of the front rotors. The rear sensors are bolted to brackets which are bolted to the rear disc brake axle adapters. The toothed rear sensor rings are pressed on the axle shafts, to the inside of the axle shaft flange. Each sensor has an adjustable air gap between the sensor head and tooth surface.