Solenoid Hydraulic Circuits
WARNING: This page is about a different car, the 2013 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
LINE pressure from the pump is directed to the individual shift, TCC and LPC solenoids by the solenoid regulator valve on the SOL FEED circuit. The solenoids, controlled by the PCM, direct the fluid to the valves that they control.
The LPC solenoid sends varying pressure to the line pressure regulator valve to control line pressure.