I cleared out the TMCC # for the engine using the LCS, and then ran it across the sensor. It's seen going either direction, the CAB2 screen backlight pops on as it crosses, and it plays the programmed sequence, but no information gets filled into the base.
I can only assume there's a problem with the engine, just need to find out what the possibilities are. It would be nice if we had more service information on the later Legacy stuff...