Shift Overlap Control
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.
The electro-hydraulic shift action is obtained by means of various valves including pressure regulators in the main control valve body controlled by the PCM or Transmission Control Module (TCM). They engage or disengage the relevant clutches or brakes at the correct moments.