Common rail pressure sensor abnormal (low voltage anomaly) how to do?
Working principle of common rail pressure sensor:When the common rail pressure leads to the silicon diaphragm shape changes (similar to 150MPa 1mm), the resistance layer resistance is connected to the diaphragm will also change, change the resistance value will be caused by the 5V bridge (Wheatstone bridge) output voltage changes, through the amplifying circuit, the voltage signal output changes between 0 - 5V, ECU according to the voltage even if the current rail pressure.
Check that the wiring is out of order and replace if there is no problem. Are you talking about the pressure sensor, the inlet pressure sensor, or the pressure sensor on the common rail? If the sensor on the track is really broken, it needs to be replaced together with the track.
There is a mistake upstairs. Now there is a rail pressure sensor that can be replaced
