The sensor measures the instantaneous fuel pressure in the high pressure accumulator and sends a signal to the ECM.
Pressurized fuel through the hole acts on the sensor diaphragm, on which the sensor element is installed (semiconductor device). converting pressure into an electrical signal. Through the connector pins and the electrical circuit, the generated and amplified signal is transmitted to the ECU.
Sensor replacement
1. If the RPS output voltage is not correct, replace the sensor.
2. Replace the sensor according to the following requirements.
- if the sensor is reinstalled, replace the sealing washer made of soft metal;
- when removing the seal, do not damage the sealing surface;
- when installing the sensor, apply a little lubricant to the sealing washer;
- tightening torque: 35±2 Nm.