I would think its pretty easy to test the BIRD. Just apply 13+ V to either input and see if the coil energizes after 2 or so minutes (of course see that the coil isn't energized to begin with).
I know there has been a lot of discussion about the trombetta/BIRD circuit on here (one thread comes to mind that is pages long--perhaps someone involved can find that thread and post a link here).
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