Power Transfer Unit (PTU)

Power Transfer Unit (PTU) 

The AWD system consists of the following:

• PTU
• Rear driveshaft
• AWD module
• Rear axle with coupling device

The PTU is a mechanical device attached to the transmission. The PTU supplies torque to the rear axle through the rear driveshaft. The AWD module is an electronic device that sends an electronic signal to the active torque control coupling solenoid which controls the rear axle coupling to apply the torque generated from the PTU to the rear wheels when required.