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Home >> Lincoln >> 2012 >> MKZ Base, AWD >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Automatic Transaxle (AISIN Aw21) >> Description And Operation >> Transaxle Electronic Control System >> Shift Control Solenoids (SSC, SSD, SSE, SSF)

Shift Control Solenoids (SSC, SSD, SSE, SSF)

Fig 1: Identifying Shift Control Solenoids (SSC, SSD, SSE And SSF)
G06263883Courtesy of FORD MOTOR CO.
Item Description
1 Shift Solenoid C (SSC)
2 Shift Solenoid D (SSD)
3 Shift Solenoid E (SSE)
4 Shift Solenoid F (SSF)

The shift control solenoid assembly (Shift Solenoid C (SSC), Shift Solenoid D (SSD), Shift Solenoid E (SSE), Shift Solenoid F (SSF)) is installed on the front valve body. The solenoids linearly control hydraulic pressure in response to signals, output from the TCM. Through this, it controls hydraulic pressure to the clutch (C1, C2, C3) and brakes (B1) for smooth shifting. According to the combination of ON or OFF status of the shift control solenoid assembly, the transaxle shifts from 1st gear into 6th gear and vice versa. As a fail-safe function, if any shift control solenoid assembly abnormality occurs, the TCM will disable the current to the shift control solenoids.