A control system for a vehicle having first and second axles is provided
that includes a coupling apparatus adapted to distribute torque between
the first and second axles and a traction controller for controlling
operation of the differential apparatus from vehicle launch up to a
predetermined vehicle speed. The traction controller is configured to
engage the coupling apparatus in a first operating state according to at
least one vehicle operating parameter indicative of a low traction
operating condition and to further control engagement of the coupling
apparatus in a second vehicle operating state during the low traction
operating condition according to a difference between an actual vehicle
yaw rate and a predetermined target vehicle yaw rate.