Pressure Regulating Solenoid: Description and Operation

Force motor: The force motor is an electronic pressure regulator controlled by the TCM to produce a hydraulic "torque signal pressure" that is primarily an indication of throttle opening. The duty cycle (percent time energized) of the force motor is regulated by TCM control of supply current. No current flow applies maximum torque signal pressure, maximum current flow applies minimum torque signal pressure. Torque signal pressure controls transmission main line pressure at the pressure regulator valve accordingly.