Method and system for controlling rear wheel anti-lock brake control on four-wheel drive vehicles braking on high mu surfaces

摘要

A method and system for detecting a braking event on a high mu surface while in four-wheel drive and modifying the anti-lock brake control accordingly. The method includes determining whether the vehicle is braking on a high mu surface and inhibiting brake pressure application to the rear wheels until it is determined the vehicle is braking on a high mu surface. The system includes wheel speed sensors, an electronic control unit and control valves for carrying out the method.