Shift Solenoid: Description and Operation

Chart #701:

SS-1 and SS-2
Two ON/OFF shift solenoids are used for electronic shift scheduling. One unit containing the two shift solenoids is located in the main control valve body. The shift solenoids are two-way, normally closed style. Shift solenoids (SS-1 and SS-2) provide gear selection of first through fourth gears by controlling the pressure to the three shift valves.

TORQUE CONVERTER CLUTCH SOLENOID
The torque converter clutch solenoid is used to control the apply and release of the torque converter clutch.

ELECTRONIC PRESSURE CONTROL (EPC)
The Electronic Pressure Control (EPC) solenoid regulates transmission EPC pressure. EPC valve pressure is used to control line pressure and the 2-3 backout valve function.