Automatic Transmission/Transaxle: Description and Operation: Overview

Fig. 1:

30RH AUTOMATIC TRANSMISSION
The 30RH automatic transmission is used with the 2.5L engine. The 30RH is a three speed transmissions with a lock-up clutch in the torque converter. The torque converter clutch is controlled by the Powertrain Control Module (PCM). The torque converter clutch is hydraulically applied and is released when fluid is vented from the hydraulic circuit by the Torque Converter Control (TCC) solenoid on the valve body. The torque converter clutch engages in third gear when the vehicle is cruising on a level plane after the vehicle has warmed up. The torque converter clutch will disengage when the vehicle begins to go uphill or the accelerator is applied. The torque converter clutch feature increases fuel economy and reduces the transmission fluid temperature. The 30RH transmission is cooled by an integral fluid cooler inside the radiator.