System Operation: Park: Powerflow
WARNING: This page is about a different car, the 2011 Ford Pickup, 2011 Ford F550 Super Duty, 2011 Ford F450 Super Duty, and 2011 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
In the PARK position, Shift Solenoid D (SSD) is commanded ON by the PCM/Transmission Control Module (TCM) to apply the low/reverse (1,R) clutch. The low/reverse (1,R) clutch is applied to hold the rear planetary carrier. In PARK, power is not transferred from the input shaft to the rear planetary gearset. The output shaft is held stationary to the transmission case by the park pawl.