There is a real easy way to check and see if the remote is reading the TIU. You do not need any engine on the track to do this. Proceed as follows: From the menu go to: System, TIU setup, TIU version: If you get (?) the remote is not in communication with the TIU and your transceiver in the remote is not seated properly. WARNING - do NOT take the cover off the remote unless you know how to do it. Proper removal instruction is covered in Barry's book, Remote section.
Bruce