Operation - Vehicles Without Active Driveline
The Power Transfer Unit (PTU) is driven via the differential carrier in the front differential in the main transmission and supplies drive to the rear differential via the driveshaft. The torque transferred is then determined via the active on-demand coupling on the rear differential.
The front left and right halfshafts are connected to the side gears in the transmission front differential. No drive from the PTU is passed to the front halfshafts.