Sounds like there is not trans relay output voltage to the trans. Check to see if pin one of the black 8 way connector on the drivers side of the trans has 12V. Unplug it and check with the engine running. It's usually light blue wire if I remember correctly. If you don't have power check for blown fuse in the PDC, a bad trans control relay, bad wire between IPM and trans controller, or bad trans relay "control" wire between PCM and IPM. The IPM itself could also be faulty. If available, a scan tool would be helpful to actuate the relay. So you can check these aforementioned parts of the trans control system.