Control Cycle (One Wheel)
WARNING: This page is about a different car, the 1993 Mercedes-Benz 190E. However, it is still accessible from the selected car via links, so may be relevant.
Wheel speed measured by speed sensor provides wheel deceleration and acceleration for electronic control unit. Linking individual wheel speed provides approximate vehicle reference speed.
Comparison of wheel speed with reference speed supplies slip signals. If wheel locks from too much pressure in caliper, a condition recognized by wheel speed sequence (wheel slip), pressure is held constant with no additional increase possible.