Transmission Solenoid Body Assembly

WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

The PCM controls the transmission operation through:

seven VFS.
a TFT sensor.
a manual valve.
an over-pressurization relief valve.

All of the above components are located on the solenoid body.

There is a solenoid dedicated to the function of each clutch. Line pressure and TCC each have their own solenoid. Four solenoids are directly proportional; the pressure output is directly proportional to the applied direct current. Three solenoids are inversely proportional; the pressure output is inversely proportional to the applied direct current.

Solenoids are keyed to prevent misassembly. There are separate connectors for the TFT sensor and the TR switch. The 24-pin connector completes the serviceable harness assembly and has serviceable O-rings.

All of the solenoids except the line pressure solenoid can be serviced without removing the solenoid assembly from the transmission case. The solenoid assembly, which holds the solenoids, is aligned to the transmission case with permanent dowel pins. There is a filter-type gasket between the solenoid assembly and the transmission case.