I'm sure this has been covered a million times but I could not find the help I needed in a search. After two months of sitting idle, the layout was fired back up today. All TMCC engines acted properly except one. That one was my 6-11903 F3 A-B-A ACL from 1996. The sound in the B unit was ragged starting up and shutting down, but fixed by re-seating a circuit board. The A unit, however, was a different story. It instantly starts up in conventional when I use the Cab1L to start to turn the voltage up to 18v on the ZW-L. I put the darn thing in Program mode and when the power comes on the headlight lights, but "reassigning" the engine ID, or going through the steps to reset TMCC functions (Eng ID, Set, Engine ID, Aux 1 then 6 ) accomplishes nothing. It just sits there during programming and the headlight never blinks, so I assumed it's not getting any command signal. I verified antenna wire continuity from strip to the board thinking it may have been pinched or something previously, but it was okay. I don't know what to do next. Any suggestion would be appreciated.
On the same subject, but two different questions. You have to input the engine ID to do a TMCC reset. What if you didn't know what an engine's ID was? It would then be impossible to do a reset. Correct?
The Lionel service drawings list a 610-8123-126 LCRU in the diesel. The instructions to Restore TMCC Functions I followed are for an LCRU 2. What's the difference between an LCRU and an LCRU 2? Thanks.
