312003192 - 1060GQ CHECK OPERATION OF SENSOR DETECTING PRESENCE OF WATER IN DIESEL FILTER
| STEP | CHECK TO BE PERFORMED | RESOLUTION IF THE CHECK IS NOT OK |
|---|---|---|
| 1 | Turn the ignition key OFF.Clean the diesel filter and replace if necessary Op. 1044B10 FUEL FILTER ASSEMBLY - R + R OR REPLACE Turn the ignition key ON.Select the following system on the diagnostic equipment: Marelli Diesel Injection 6F3 EOBD CAN (EP engine 1.3 JTD).Check that error P2264 is "Present" | Water present in diesel filter Check there is no water in the fuel tank. Clean the tank if necessary |
| 2 | Turn the ignition key OFF.Disconnect the wiring harness connector from the diesel filter water sensor and from engine control unit connector A.Turn the ignition key ON.Check that the voltage across pin 1 (wiring side) of the sensorand the earth is greater than 0.3 V. See K101 FUEL TEMPERATURE AND WATER IN FUEL FILTER SENSORMove on to Step 4 | Move on to Step 3 |
| 3 | If faults are present, repair or if necessary replace the electrical wiring between the engine control unit and the water presence sensor See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT The test can be considered over | Replace the engine management control unit Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R |
| 4 | Turn the ignition key OFF.Check that the voltage across pin 1 (wiring side) of the sensor See K101 FUEL TEMPERATURE AND WATER IN FUEL FILTER SENSORand the earth is more than 500 kOhm. | Repair or if necessary replace the electrical wiring between the water presence sensor and the engine control unit See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT |
| 5 | Check that the voltage across pin 1 (wiring side) of the sensor See K101 FUEL TEMPERATURE AND WATER IN FUEL FILTER SENSORand control unit Pin 13 (wiring side) See M010 ENGINE MANAGEMENT ECU is less than 5 Ohms | Repair or if necessary replace the electrical wiring between the water presence sensor and the engine control unit See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT |
| 6 | Connect a shunt cable with a fuse between control unit Pin 80 (wiring side)and the earth. See M010 ENGINE MANAGEMENT ECU Check that the voltage across pin 3 (wiring side) of the sensor See K101 FUEL TEMPERATURE AND WATER IN FUEL FILTER SENSORand the earth is greater than 11 V. | Repair or if necessary replace the electrical wiring between the water presence sensor and the engine compartment junction unit See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT |
| 7 | Check that the voltage across pin 2 (wiring side) of the sensor See K101 FUEL TEMPERATURE AND WATER IN FUEL FILTER SENSORand the earth is greater than 5 Ohms. | Repair or if necessary replace the electrical wiring between the water presence sensor and earth See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT |
| 8 | Replace the water presence sensorOp. 1060G30 | Repair the original sensor and replace the engine control unit Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R |