Discontinued Throttle Body

I have been a long time lurker on the forum and you guys have saved me a bunch. My ‘01 Tacoma 2.7 4x4 manual transmission needed a new throttle body. Unfortunately, the exact throttle body has been discontinued. The original throttle body is 22210-75250. The new throttle body is 22210-75210. I swapped out the old throttle body with the new one and now it is kicking out a P0505 code. It is idling at 435 rpm after it has been warmed up. Any thoughts?

 

https://www.carparts.com/blog/p0505-code-idle-control-system/

 

I found that link but thank you though. I have the factory service manual and will give that a go tonight

 

I managed to get the idle right at 750 but the P0505 code is still there. It is puzzling since the unit is brand new

 

Did you ever solve this?