Sensor, Fuel Pressure, Low Pressure Side
The sensor is a piezoresistive sensor that is powered with 5 V by the engine control module (ECM). The signal to the engine control module (ECM) is an analogue voltage signal between 0.5 - 4.5 V. The signal is a feedback to the engine control module (ECM) stating that control of the fuel pump via the fuel pump module is correct. The pressure to the high pressure pump is approx. 300-620 kPa (3 to 6.2 bar) relative pressure, depending on driving conditions and fuel temperature.