2013 Tundra, no function from ac actuators. Replaced driver side servo assembly, still nothing

Hello, im hopeing someone has some insight on what could be the problem. Originally the truck came in and had no function with any of the dash controls, hot/cold all the modes were dead. It was stuck on medium temp face only.

I replaced the entire servo assembly with both actuators on the driver side, everything was timed accordingly and still no difference. Pn:
87106-0C140

On my scanner, i can see the values change when switching the modes and the temperature so i know the computer is reading the signal from the dash knobs and trying to respond.

It does however have a code that when i clear it, comes back immediately for a communication error in the bus network for the ac system and supposedly there is a fault in either the ac system wiring harness or the ac amplifier is shot.

Has anyone had this problem or know if replacing the ac amplifier is the likliest culprit? I looked at the wiring inside the cab and nothing sticks out to me which makes me think the amplifier is the culprit. Thanks in advace to anyone willing to give me some insight. I will post the trouble code tomorrow for reference.

 

Official welcome.

 

It's probably worth trying a used AC amp to see if the code persists.

If it's not the AC amp, you're going to have to chase wires and look for rub throughs or breaks, which is a total PITA.

 

Put a scope on it and find the issue. That would be the best bet.