I've done a fair few ZS controller installs now... I've done, I think over 7, and have managed to do one on every type of TT loom. I've had CEL's in past, and all you do is check it, "oh look, such and such sensor is not getting to the ECU". Simply check the wiring, and sure enough, it's usually a wrong wire, or something silly.
Well, I isntalled one on glens BE (Omegah) the other day, and got a CEL. 'Sweet, this has happend before, no worries', so we looked it up, and it's the differential pressure sensor. I checked the wiring, all good. Checked ALL of the wiring again, and all good. Had someone else check all my wiring, and it was all good... Random...
I did some more digging around, and it turns out I had lent the soldering iron on the controller loom, and melted 3 wires, one of which was the diff px sensor... So I fixed that thinking it'd do the trick, but no, even after that, it still was getting the CEL. WTF.
Here's where it gets tricky. We prodded around with a multi meter, and the sensor is talking to the controller fine, and the controller is talking to the ECU fine, the wiring is all mint. We test drove the car, and everything performs beautifully, it drives fine, the controller works, and does it's thing! Yet, the CEL remains!!!
I'm stumped, how can everything be fine, and working, but have a CEL anyway. I've done an installer on the 3-plug BE before, and didn't get this issue, and i've installed on ALL other types of TT, and did not get the issue. WTF.
Idea's people?
2 ideas we have had is to get another controller and check that, and get another sensor, and check that. I don't think glens had a chance to do anything though.