Toothed Ring
A wheel speed sensor is mounted at each wheel, sensing a 60 tooth exciter ring. When the vehicle is in motion the inductive sensors send signals to the Electronic Control Unit (ECU).The front exciter ring is fitted adjacent to the constant velocity joint in each front hub. The rear exciter ring is inside the axle adjacent to the wheel bearing assembly.
NOTE: Road speed information from the ECU is transmitted to the Body Electrical Control Module (BECM) to drive the speedometer and all systems requiring speed information, except the transfer box ECU.