Hello. I measured the voltage to mass like ok. The flow meter was from Mercedes so I decided to buy a new one. On the new one the same mistake. I checked exactly according to this: https://obrazki.elektroda.pl/7157574400_1307541852.jpg
2 to 12V and 2 to 3 2.2V, i.e. brown-blue cable. There is cable continuity to the ECU plug, but there is no transition between 4 and 1 and 27 (ground) in the ECU itself. Someone will tell me before I dismantle the ECU, is terminal 4 of the controller a clean mass and look for cold solder or something else fell?
2 to 12V and 2 to 3 2.2V, i.e. brown-blue cable. There is cable continuity to the ECU plug, but there is no transition between 4 and 1 and 27 (ground) in the ECU itself. Someone will tell me before I dismantle the ECU, is terminal 4 of the controller a clean mass and look for cold solder or something else fell?
