I am still figuring it out. I wish there was somewhere that had the menu trees to look at. I would like to control the IAC solenoid on my 2000 Cadillac DeVille. I was going to suggest to the OP that mine had not connected to the iDiag on my phone. I looked at the bluetooth settings and then I watched it connect. Bluetooth can be a bit odd at times.
I think idiag menu is just like tech2. I have tech2 and menu is very similar. idiag is missing some stuff tech2 has, but idiag does a lot for the $. Actually I think it is too good for the money