I did that and got nothing..zip, nada, etc, is it broken?
I think that a new duo valve is about 100 Euros.Thank you Malcolm, any idea how much they cost? my old W124 has a good one, the pipe work is slightly different, on the SLK all 3 pipes come out on 1 side, and on the W124 there is 2 on one side and 1 on the other.
But if they are reasonably priced I will buy one.
If no resistance are between pins that means that your solenoid are broken.
You can repair them all that you need is to repect the topic linked in malcolm's reply.
I have me too problems with my duo valve but they aren't broken because the resistance between pins are the same 0.20 Ohms