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

Check the operation of the low pressure supply circuit by carrying out the

See Test 1060OB CHECK ON SUPPLY LOW PRESSURE FUEL CIRCUIT

Restore the correct engine oil level

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

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

. Accelerator pedal

. Accelerator position 1 AD/C

. Accelerator position 2 AD/C

See Test 1068AC ACCELERATOR PEDAL CHECKS

. Atmospheric pressure

See Test 1060GD ATMOSPHERIC PRESSURE CHECK

. Supercharging pressure Objective

. Supercharging pressure Measured

See Test 1060GF SUPERCHARGING PRESSURE CHECK

. Measured air mass

See Test 1060GG MEASURED AIR MASS CHECK

. Air temperature in the intake manifold

See Test 1064BD SUPERCHARGING TEMPERATURE CHECK

. Engine coolant temperature

See Test 1060OE CHECK ON OPERATION OF COOLANT TEMPERATURE SENSOR

. Diesel temperature

See Test 1060EA DIESEL FUEL TEMPERATURE CHECK

. Target Diesel pressure

. Measured Diesel pressure

See Test 1060GH DIESEL FUEL PRESSURE CHECK

. Engine rpm

See Test 1060GI ENGINE SPEED CHECK

Check that the fuses F1 (the last one at the bottom of the vertical row) and F20 (the first one on the right of the lower row) have not blown.

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

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

Using the diagnostic equipment carry out the active diagnosis for the turbocharger regulating solenoid valve.

Check the operation of the variable geometry control actuator

See Test 1064BC VARIABLE GEOMETRY TURBOCHARGER ACTUATOR SEAL TEST

Restore the wiring continuity

See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT

Replace the solenoid valve if necessary

Op. 1064B42 SOLENOID CONTROLLING TURBOCHARGER VANE POSITION ACTUATOR - R.R

Restore the wiring continuity

See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT

Replace the solenoid valve if necessary

Op. 1080C24 E.G.R. SYSTEM SOLENOID - R + R

Replace the switch

Op. 1060G38 BRAKE PEDAL SWITCH - R.R

Restore the correct connection

See E2021 BRAKE LIGHTS

Check as described in the

See Test 1064BA SUPRECHARGING PRESSURE CHECK

the operation of the turbocharger

Replace the turbocharger

Op. 1064A27 TURBOCHARGER UNIT AND EXHAUST MANIFOLD - R.R.

Connect the diagnotsic equipment to the diagnostic socket.

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 from the pressure relief valve and carry out the test 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

Check 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 high pressure DRV valve

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

and check that the fault is no longer present

Replace the high pressure pump

Op. 1060E10 DIESEL INJECTION PRESSURE PUMP - R.R.

and check that the fault is no longer present

Restore the correct valve gear timing

Op. 1032B10 TOOTHED TIMING BELT - R + R FOR TIMING ADJUSTMENT OR REPLACEMENT

Check that the tappet clearance is correct

Op. 1036H10 VALVE TAPPETS - CHECK AND ADJUST CLEARANCE, IF NECESSARY

Carry out the cylinder compression check

Op. 0510A10 CYLINDER COMPRESSION - CHECK FOR LOOSE SPARK PLUGS OR INJECTORS

Carry out

Op. 1016C10 SINGLE CYLINDER HEAD - R.R. AND REPLACE GASKET

to check the valve seal.

Check condition of cylinders/piston rings

Overhaul the head

Op. 1016E10 SINGLE CYLINDER HEAD, REMOVED - OVERHAUL

Replace the engine management control unit

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