So, now I'm done with the cruise control. Yesterday I changed everything, which was exchangeable (except the ECU, I didn't get that needed), and it doesn't work. I'm not sure I can. and switches all measured.
I also measured all the lines, according to the plan, everything practically 0-Ohm, only the line from the tacho to the control unit was high-ohmic (4-6 kOhm) - great, I thought, I did, nuuur: Between signal wire for the radio (and YES, there is a connection between the radio and the cruise control !) and the control unit I have 0 Ohm, and these two lines are on the same distributor as the Klimatronic. And that's where the speed indicator is!
So if I have 6kOhm between speedometer unit and cruise control unit, but 0 Ohm between radio wire and cruise control unit, but the Klimatronic again shows the correct speed, it can only be that
- I have a measurement error
- or, and this is more interesting, the air conditioning speed sensor is much less sensitive than the GRA control unit.
Of course, the ECU can still be gone, but that's obviously never happened to anyone before, right? Anyway, he's not leaving, and I'm giving up. I guess I can't do more than try anything.
Do you still have an idea what it can only be (it only goes very rarely and then only for max. 1 minute) ? Any more flashes of mind?
Thank you for your help! I had hoped the replacement parts would fix the problem
Greetings!
Bastian
... wie hat sich das denn bemerkbar gemacht ? Ging er gar nicht mehr ? Oder nur sehr selten ? Das wär wichtig.