TEST OF A FUNCTION FOR CONTROLLING THE TRAJECTORY OF A VEHICLE USING THE BRAKES WITHOUT CONTROLLING THE STEERING WHEEL

Method for testing a trajectory control function of a motor vehicle in the absence of steering control of that vehicle, using a driving assistance system performing trajectory control based on individual action on wheel brakes, the vehicle's steering system comprising an assistance that can control that steering, this method being remarkable in that during vehicle rolling it applies braking of a front wheel (40, 42), and depending on its effect on steering deflection it controls the steering assistance to deliver an inverse torque opposing that deflection in order to maintain the steering in that state, and it records values of that assistance control depending on the braking applied.