Other information:
Removal
Turn the ignition switch to the OFF position and apply the parking brake.
Remove the air cleaner assembly.
Refer to: Air Cleaner (303-12D Intake Air Distribution and Filtering - 2.7L EcoBoost (238kW/324PS), Removal and Installation).
Refer to: Air Cleaner (303-12C Intake Air Distribution and Filtering - 2.5L Duratec (125kW/170PS), Removal and Instal..
The AWD system consists of the following:
Power transfer unit (PTU)
Front and rear halfshafts
Rear axle and driveshaft
AWD relay module
Rear axle with coupling device
Torque
from the engine is transferred through the transmission to the Power
Transfer Unit (PTU). This torque is transferred from the driveshaft to
the rear axle, which drives the rear halfshafts. Th..