Abstract: A method and an assembly 40 for determining the axial and rotational position of a shift member 14. The assembly includes a pair of substantially identical and signal producing sensors 42, 44 which are respectively coupled to first and second members 50, 52. The member 14 is made to include projections 60, 62 which respectively engage members 50, 52 when the member 14 is respectively moved in an axial and rotational manner. In this manner, sensors 42, 44 produce signals which respectively indicate the amount by which the shift rail member 14 has been moved in an axial and a rotational manner and these signals are used to compute the current axial and rotational position of the shift rail member 14.

Abstract: An automatic transmission mechanism having multiple ratio gearing and clutch and brake elements operated by fluid pressure operated servos for changing speed ratio in the transmission and a controller for actuating and releasing the clutches and brakes in response to operating demands determined by sensed variables such as vehicle speed, engine torque, manual valve position, transmission turbine speed, and engine temperature, and means for achieving improved control of a synchronous downshift event by electronically regulating the exhaust pressure from an off-going friction element of the clutch and brake structure, thus controlling the torque-carrying capacity of that off-going element during the downshift interval.