I did some more checking this morning...
The interlock I mentioned earlier - It was refering to the front door switch, which does have a switched 24v line to it. The voltages were good and wired correctly, so that ruled that out.
From there, everything pointed back to the TD sensor, so I pulled it and the service history on the machine and found that it was a used part. When I removed the part, I found that the sensor was not properly installed with the double sided foam tape. Rather it was installed with foam still on the underside of the sensor and SuperGlued to the dev unit.
This of course damaged the sensor and slightly disfigured the mount on the dev unit. I was able to salvage the unit, I have a new TD sensor on order. As soon as it comes in, one day next week, I will update everyone.
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