The control system includes: pump, valve block, solenoid valves (solenoids), hydraulic accumulators, clutches and brakes.
The main pressure in the system is created by a pump, it is regulated depending on the load and vehicle speed, and ensures the operation of the torque converter, lock-up clutches and brakes.
Shift valves control fluid flow to the torque converter and planetary gearbox.
The valve block contains three solenoids #1, #2 used for shifting and #3 which controls the torque converter lock-up clutch. The A245E valve block has an additional torque converter lockup quality control solenoid.