194003933 - 1080BF CHECK DIFFERENTIAL PRESSURE SENSOR OPERATION
| STEP | CHECK TO BE PERFORMED | RESOLUTION IF THE CHECK IS NOT OK |
|---|---|---|
| 1 | Check whether error P2455 - Differential pressure sensor - is present using the diagnostic equipment | Replace differential pressure sensor Op. 1080B82 PARTICULATE FILTER DIFFERENTIAL PRESSURE (D.P.F.) SENSOR - R R |
| 2 | Turn the ignition key OFF.Disconnect the wiring harness connector from the FAP differential pressure sensor.Turn the ignition key ON.Check that the voltage across pin 1 and 2 of the sensor See K187 FAP DIFFERENTIAL PRESSURE SENSORis greater than 4.8 V.Move on to Step 4 | Move on to Step 3 |
| 3 | If faults are found, restore the wiring between the engine control unit and the downstream temperature sensor See E5070 PARTICLE FILTER SYSTEMReplace the wiring if necessary.The test can be considered over | Replace the engine management control unit Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - .R |
| 4 | On the diagnostic tester, check whether the differential pressure sensor voltage parameter is between 4.8 and 5.2 V | Move on to Step 3 |
| 5 | Connect a shunt cable with a fuse between sensor Pin 3 See K187 FAP DIFFERENTIAL PRESSURE SENSORand the earth.On the diagnostic tester, check whether the differential pressure sensor voltage parameter is less than 0.3 V | Move on to Step 3 |
| 6 | Replace differential pressure sensor Op. 1080B82 PARTICULATE FILTER DIFFERENTIAL PRESSURE (D.P.F.) SENSOR - R R |