Solenoid/Pressure Switch Assembly: Description
The Solenoid/Pressure Switch Assembly is inside the transaxle and mounted to the valve body assembly. See Fig 1. The assembly consists of four solenoids that control hydraulic pressure to the L/R, 2/4, OD, and UD friction elements (transaxle clutches), and the torque converter clutch. The reverse clutch is controlled by line pressure from the manual valve in the valve body. The solenoids are contained within the Solenoid/Pressure Switch Assembly, and can only be serviced by replacing the assembly.
The solenoid assembly also contains pressure switches that monitor and send hydraulic circuit information to the PCM. Likewise, the pressure switches can only be service by replacing the assembly.