connect the reverse gear 39 to the output shaft fig3 shows the arrangement of an electronic system for controlling the actuation of clutches 22 and 24 through operation the clutch actuators 50 52 and for actuating the synchronizers 42 44 46 48 through operation on the synchronizer actuators 54 56 a transmission control unit tcu 60 which is accessible to electronically stored coded algorithms responds to the various inputs executes the control algorithms and produces electronic command signal to the actuators 50 52 54 56 the position or displacement of the actuators is carried back as input to the tcu 60 the position of a transmission shift lever 62 is communicated on can 64 to the tcu input and communications among various sensors the tcu and actuators is carried on the can speed sensors 66 67 68 produce electronic signals representing the speed of output 32 the speed of input 12 and speed of input 14 other tcu inputs include state of a transmission park switch 70 the position or state 71 of clutch 22 and the engaged or disengaged state 72 of clutch 24 the magnitude of displacement of an accelerator pedal 102 is another tcu input fig4 is a logic flow diagram illustrating the steps for controlling engagement and disengagement of the clutches 22 24 and for controlling the connections made by the synchronizers or couplers 42 44 46 48 during a sequence of displacements of the accelerator pedal 102 by the vehicle operator that sequence called a u201c change of mind u201d event begins with an abrupt release or tip out.