Neg of multimeter to ground.Voltage in VCDS? It is seems static. Try back probing the middle (yellow) wire on the potentiometer.
Neg of multimeter to ground.
Mac.
No. Just remove the air duct out of the way. The top of the pug will clip off. Get a thin nail or pin and push in next to the wire until it stops.I'll give it a go when I can get in there. It looks like I need to remove the high pressure fuel rail to get access is that correct? Presume it is pull the fuse on the high pressure pump and run the car until pressure is nominal on measuring block 140?
Here is a pic
View attachment 59673
Might be worth using the Tippex method to check how much actuator movement you're getting, when engine starts.Top idea, thanks for that. I'll do this and then run through the motion.
Im at the car now. Ive got a camera on the rod so I will record any motion etc.. I may live stream it if there is interest?
Yep, the back of the connector should just pop off with a small screw driver.The middle wire on my connector is Yellow/Red, is this correct?
Great! The sucking tip from @PlasticMac is invaluable. It saves us from needlessly removing the lower intake manifold.I have now tested the actuator with some piping that I got from Halfords this evening and I can confirm the actuator works exactly as expected when subjected to suction!!! So this is a win! I'll get on with testing the pot now and then I'm left with the solenoid I believe, and the vacuum hoses themselves.