| STEP | CHECK TO BE PERFORMED | REMEDIAL ACTION IF THE CHECK IS NOT OK |
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| 1 | With the engine idling and warm, with all users off and the accelerator pedal not operated, the target Diesel Pressure and the measured Diesel Pressure must be in a range between 200 and 500 bars | Move on to Step 3 |
| 2 | When the accelerator pedal is pumped several times, the measured Diesel Pressure must be in a range between 200 and 1500 bar. The test can be considered over. | Move on to Step 3 |
| 3 | Sensor supply check. Turn the ignition key to the OFF position.Disconnect the cable loom connector from the fuel pressure sensor. See K083 FUEL PRESSURE SENSOR Turn the ignition key ON.Measure the voltage between sensor Pin 3 See K083 FUEL PRESSURE SENSOR and earth. Ensure that it is in a range between 4.8 and 5.2 V.Move on to Step 4 | Repair or, if necessary, replace the electrical wiring between the engine management control unit and the pressure sensor See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT - If the wiring is okay and the voltage signal is interrupted at the control unit outlet, replace the engine management control unit Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R |
| 4 | Sensor power supply checkMeasure the voltage between sensor Pins 1 and 3 See K083 FUEL PRESSURE SENSOR Ensure that it is in a range of between 4.8 and 5.2 V.Move on to Step 5 | Repair or, if necessary, replace the electrical wiring between the engine management control unit and the pressure sensor See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT - If the wiring is okay and the voltage signal is interrupted at the control unit outlet, replace the engine management control unit Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R |
| 5 | Voltage signal checkMeasure the voltage between sensor Pin 2 See K083 FUEL PRESSURE SENSOR and earth. Ensure that it is in a range between 4.8 and 5.2 V. Move on to Step 6 | Repair or, if necessary, replace the electrical wiring between the engine management control unit and the pressure sensor See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT - If the wiring is okay and the voltage signal is interrupted at the control unit outlet, replace the engine management control unit Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R |
| 6 | Pressure signal check- Connect the connect to the sensor- Connect the voltmeter between pin 2 and earth- Start the engine- Check that there is a voltage of between 1.3 and 1.5 Volt with the engine idlingReplace the pressure sensor Op. 1060G28 FUEL PRESSURE SENSOR ON FUEL MANIFOLD TO INJECTORS - R.R and check the fault has disappeared | Replace the pressure sensor Op. 1060G28 FUEL PRESSURE SENSOR ON FUEL MANIFOLD TO INJECTORS - R.R and check the fault has disappeared |