Carrier TM1000 rear evaporator fan not working

I have a Carrier TM1000 rear evaporator fan in a trailer. Replaced micro and fan relay board. I have no power to the fan relay board. I have power out of my generator, power down to my high current box, but no signal to the power wire for the fan relay at the board (splice J16?) Any suggestions would be helpful, thanks!

Are the belts tight?, you should move your post / repost it in the transport section.

Thanks, moved to transport section.