3rd Gear: 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 3rd gear, SSA is commanded ON by the PCM/TCM to apply the forward (1, 2, 3, 4) clutch. SSB is commanded OFF by the PCM/TCM to apply the direct (3, 5, R) clutch. The forward (1, 2, 3, 4) clutch connects the front carrier to the No. 3 sun gear and the direct (3, 5, R) clutch is applied to transfer power from the front planetary carrier to the No. 2 sun gear, providing a 1.516 to 1 gear ratio.