Not working sensor circuits (Euro Truck Simulator 2)

Tell me please... I downloaded ETS2 v [v 1.30.0.12 s + DLC 54] and faced with this problem, I have called my own KAMAZ-5410 (5511) and noticed such a joke... the fact that all the gauges work except the air sensor 2 circuit (not upper,not lower) as they were at 0 and are all the air out of the system,sounded the buzzer.... I started (to pump air),the beeper stopped beeping,and the contours are still at 0... I thought that I pictures and not prescribed script... bought a standard MAN and here's the catch.... everything works,except the sensor is the air... what could be the problem ? tell me... and without contours I XS Lope I KG pumped into the receivers... maybe not current at me such problem ?