Sure thing, sorry been busy with other projects, I'll get back on this soon and will definitely report back what I find. I'm pretty sure the Actuator is ok, it is likely the feed to the solonoid that is fault, but I'll continue with the test and post what I find.It would be interesting to know what you observe on your current one, (with a suspect N316 valve), when running the Output Test.
From what I observed, as long as the vacuum can be physically maintained i.e dependent on the leak rate. I didn't have the patience to wait but there is nothing that purges it within a few minutes of the engine stopping. When the ignition is switched on, it is purged and you can hear the "FSI click". It is music to my ears everytime I sit in my FSI. It means the vaccum is good, my flaps are moving and most importantly I am in an FSI.That's what I read in your Rosstech post. Just wondering how long the residual vacum remained after the engine was switched off.
Can't decide if the non-return valve is in the vacum circuit, or the vent side. Looking at those self study notes, I think it's the vent side ...
First of all welcome.When the MIL is off, it appears that it is working fine, so why doesn't it like being switched off? Any clues?