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When I place an MTH PS2 engine on my track #1 or a special Z4K track, the engine starts up and runs normally.  All functions work.  I can add an engine or find one.  When I place the same engine on my track #2, I can not add it (I get a "no engine to add or an engine not found" message if it is not in the remote),  if I try to select it and start it up, I get an "engine not on track" message and then the engine goes into conventional mode.  All of the engines have BCR's.

I am suspecting a wiring issue of some sort.  I think it may be a faulty or non existent ground.  I have been troubleshooting for two days now and have been unable to find the problem.  I have tried alternative wiring without success.  I know I am missing something.   This issue is driving me nuts since the engines will operate correctly on two of my three tracks and the Z4k track, so I know the engines are OK.

I have checked out the TIU and all ports are on and it appears to be working correctly.  I have even reset it and tried resetting an engine so that does not appear to be the problem.  Any thought on what else I can try appreciated.

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Does track 2 have power getting to it? Is it connected to fixed #2? Are you powering the TIU with the Aux in? If so,....

So you need to be methodical in your steps. 

You would start right at the TIU channels and one by one, make sure they work with a short test piece of track. Don't take it for granted, check it!

If they do, move on. Look at the track connections. You would swap out the wires going to track 1, and connect to track 2 for example. If track 2 now works, it's the old wires going to it. 

You have to find out where you're losing the signal. Once you narrow down where it is by troubleshooting like that, you can fix it.

I have removed my TIU from the layout and in a rush, swapped one pair of input leads so they were out of phase. That caused all kinds of problems.

Solved.  Did what Engineeer-Joe said,  TIU channels all working correctly.  Switched wires from track #1 to track #2 and that worked.  So that isolated the problem to wiring between TIU and track.   Finally found an extraneous wire that had somehow got connected to the wrong place.  Everything seems to be working as it should now.  Thanks again for the help.

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