An electronic-hydraulic controller for an automatic transmission includes a transmission control module (TCM) which is disposed outside the transmission housing and is connected to the actuators, sensors and switches within the transmission by a serial data link such as the car area network (CAN). Electrical power is also provided to the components within the transmission resulting in a connector requiring only five or six terminals. Each of the actuators, sensors and switches includes its own integrated electronic circuitry which receives, stores and provides data and allows it to communicate through the serial data link with the externally mounted control module. The electronic circuitry of each actuator stores data regarding its input signal to output pressure and flow characteristics which facilitates replacement of the transmission control module.