Circuit Operation
- A toothed wheel speed rotor generates a voltage pulse as it moves across the pickup field of each wheel speed sensor.
- The amount of voltage generated at each wheel is determined by the clearance between the wheel speed rotor teeth and the wheel speed sensor, and by the speed of rotation.
- Sends alternating current signals at frequencies which are proportional to the rotation speeds of each wheel to the ABS/TCL electronic control unit (ABS/TCL-ECU).
- The ABS hydraulic unit modulates the amount of braking force to front wheel cylinders individually to activate the TCL system.