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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1959 (Automatic Transmission - Automatic Transaxle/Transmission) >> Description And Operation >> Transaxle Electronic Control System >> Shift Solenoid A (SSA), Shift Solenoid B (SSB), Shift Solenoid C (SSC), Shift Solenoid D (SSD) and Shift Solenoid E (SSE)

Shift Solenoid A (SSA), Shift Solenoid B (SSB), Shift Solenoid C (SSC), Shift Solenoid D (SSD) and Shift Solenoid E (SSE)

WARNING: This page is about a different car, the 2010 Lincoln MKX and 2010 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

Five shift solenoids are used for electronic shift scheduling. The 5 solenoids are located in the solenoid body. SSA  , SSB  , SSC  and SSD  are Variable Force Solenoid (VFS). SSE  is an ON/OFF shift solenoid. Shift solenoids SSA  , SSB  , SSC  , SSD  and SSE  provide selection of 1st through 6th gears and reverse by controlling the pressure of the shift valves. SSA and SSC  are normally low-pressure solenoids. Pressure increases as the PCM activates the solenoid. SSB  and SSD  are normally high-pressure solenoids. Pressure decreases as the PCM activates the solenoid. SSE  is normally closed and opens when the PCM activates the solenoid. The solenoids are activated by the PCM controlling current flow at the solenoid ground circuit, this is known as ground side switching.