Just helped a buddy figure out a high idle issue on his 97, running MS Labs MS3 Basic. The AC was always being registered as ~on~. Turns out the tune had tableswitch mapped to the AC input pin, but digital in was the actual input that toggled with turning the AC on and off.

I don't have an MS3 Basic basemap, so I do not know if this is how it is there or not.

v1.40FW

 

"Datalog in" is the A/C input on the Basic MS3. Table switching is off by default but assigned to the "Tableswitch" input. Second hand unit?

 

Not sure if it is second hand or not. If your basemap has Datalog In assigned to AC In, my guess is that this unit had a DIY tune loaded at some point or something.

Not a big deal, My Google-Fu did not get me a MS3 Basic pin map for pins in the car harness, I was a little surprised by that. Maybe I didn't look hard enough.