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My diagram is showing you have a variable speed motor which is high voltage powered but low voltage controlled.Can you verify this? Or did your furnace have a psc motor?
This is the diagram from Trane on the model you provided. It shows the YL/BK jumper between #1 and #2. Do you internet when you are on site? And do you have a plastic connector between board and motor as well as the White Black and Green power wires?
Here is a link to the entire furnace manual. You will find wiring on page 15
The tud080r936a1 shows to be the XV 80.
Take a look at this one and tell me if it looks more like your furnace.This id for the TUD2 series