Check that the engine oil level is correct

Op. 0010T11 ENGINE OIL - CHECK LEVEL AND TOP UP, IF NECESSARY

Check that the air intake/vacuum circuit is working properly by carrying out the

See Test 1048OA AIR INTAKE/VACUUM CIRCUIT CHECK

Check the condition of the fuel supply circuit and make sure that it is working properly carrying out the

See Test 1040OA FUEL SUPPLY CIRCUIT CHECK

Also check

1. wiring on engine correctly fastened to earth;

2. battery correctly fastened to earth;

3. positive battery pole and all leads connected to it correctly fastened

Restore the correct engine oil level

Op. 0010T11 ENGINE OIL - CHECK LEVEL AND TOP UP, IF NECESSARY

Restore correct fastenings

See E1010 POWER SUPPLY

Restore correct fastenings

See E1010 POWER SUPPLY

Select the following control unit at the diagnostic equipment: EDC16C39 Diesel electronic injection control unit.

Check the value of the following parameters:

. Battery voltage

See Test 5530BB BATTERY VOLTAGE CHECK

. Engine rpm

See Test 1060GI ENGINE SPEED CHECK

. Target Diesel pressure

. Measured Diesel pressure

See Test 1060GH DIESEL FUEL PRESSURE CHECK

Check that the DPF system is working properly, carrying out the

See Test 1080BE PARTICULATE FILTER SATURATION CHECK

Carry out the active diagnosis for the preheating relay, checking that the result is positive.

The check on the following system is only necessary if the outside temperature is below 0 °C.

Check that the heater plugs are working properly, by carrying out the

See Test 5520CA GLOW PLUGS FUNCTIONAL TEST

Restore the connections or, if necessary, replace the junction unit in the engine compartment

Op. 5505A13 ADDITIONAL JUNCTION UNIT IN ENGINE COMPARTMENT - R.R.

Check the circuit for the protective fuse for the diesel preheating relay, carrying out the

See Test 5505AB CHECK DIESEL PREHEATING RELAY PROTECTIVE FUSE

Check the diesel preheating relay circuit, carrying out the

See Test 5505AC CHECK DIESEL PREHEATING RELAY

Check as described in the

See Test 1060OC INJECTORS SEAL TEST

that the diesel leaks from the injector recirculation connections are small (seepage) and roughly equal to one another.

Replace the injector

Op. 1060F10 FUEL INJECTORS - R.R.

Check as described in the

See Test 1060OD INSPECTION OF THE HIGH PRESSURE FUEL CIRCUIT

that the diesel pressure parameter is correct.

Check as described in the

See Test 1060OA CHECK ON RETURN LOW PRESSURE FUEL CIRCUIT

that the pressure in the return pipe to the tank is less than 1 bar

Check as described in the

See Test 1060OB CHECK ON SUPPLY LOW PRESSURE FUEL CIRCUIT

that the diesel pressure between the filter and the pressure pump is between 2 and 3 bar

Constrict the return pipe downstream of the valve and carry out the test once again

See Test 1060OB CHECK ON SUPPLY LOW PRESSURE FUEL CIRCUIT

with the pipe constricted checking that the filter outlet pressure remains below 2 bar

Replace the valve

Op. 1044B10 FUEL FILTER ASSEMBLY - R + R OR REPLACE

Replace the fuel filter cartridge

Op. 1044B20 FUEL FILTER FILTERING ELEMENT - REPLACE

Check as described in the

See Test 1040AA SUPPLY VOLTAGE AND ABSORPTION CURRENT CHECKS

that the pump supply voltage is equal to 12V and that the current uptake is between 2 and 10 A

Renew electrical wiring

See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT

Replace the fuel pump

Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GAUGE CONTROL - R + R

Replace the fuel pump

Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GAUGE CONTROL - R + R

and clean the fuel tank

Replace the DRV high pressure regulation valve and check that the fault is no longer present.

Op. 1060E50 PRESSURE REGULATOR ON PRESSURE PUMP - R.R.

Replace the engine management control unit and check that the fault is no longer present

Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - .R