Moin moin, Auto: 850 T5 Kombi, Schalter, Bauj. 10-1995. am just a little bit at the end. I found with the SuFu nix more than the exchange of the gear. Since there is also the error with other Tachos I had looked there first. That was definitely broken. This VDO Tacho does not want to count partout. I tried at the three soldering points of the coil at the counter to measure what. Likewise with the mounted counter on the board, looks as if there were everything there i.o. My questions now: Is the impulse s, which stimulates the speed, the same as that which makes the counter run? Does the pulse generator therefore have two tasks? Where does it sit in the switchcar? On the gearbox? Or does the signal come from the ABS block? Can I measure an impulse at the green plugs of the AI’s and thus limit the error? Can the coil at the counter be operated manually for testing in the developed state? With how much volt? Greeting Joe