Hey everyone, I tried looking for a topic about this but all the posts were referencing MS3s. Where would I connect a generic GM IAC (usually with 4 wires) to my ECU? I don’t see anything referring to IAC on the 26 pin connector on the manual. Thanks.

 

What generation of ECU do you have? On early models, you need to add wires to bring the signals from the MS2 board to pins on the output connector.
page 39 of hardware manual
MS2V30_Hardware-3.3.pdf (msextra.com)

 

I’m currently trying to figure out a similar issue on my own. Thanks a lot for the PDF - I’ll take a look. By the way, for adding notes to PDF manuals, there’s a handy tool called PDF Guru mentioned in that article https://euroweeklynews.com/2024/02/2...tal-documents/ about digital documents. I’ve been using it for about a year now. In my opinion, it’s a very useful feature. Plus, you can use it to convert files if you prefer PDF as much as I do.