System Operation: Reverse: Mechanical: Powerflow
WARNING: This page is about a different car, the 2012 Ford Pickup, 2012 Ford F550 Super Duty, 2012 Ford F450 Super Duty, and 2012 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
In the REVERSE position, Shift Solenoid B (SSB) is commanded OFF by the PCM/TCM to apply the direct (3, 5, R) clutch. SSD is commanded ON by the PCM/TCM to apply the (1, R) clutch. The low/reverse (1, R) clutch is applied to hold the rear planetary carrier and the direct (3, 5, R) clutch is applied to transfer power from the front planetary carrier to the No. 2 sun gear. With the rear carrier held stationary by the low/reverse (1, R) clutch, the input to the No. 2 sun gear causes the rear ring to rotate in the opposite direction at a 3.128 to 1 ratio, providing reverse.