Turn the key ON and check that the initial check on the MIL and CODE warning lights takes place.

The MIL warning light should come on and then go out when the engine is started up, whilst the CODE warning light should come on for about 4 seconds and then go out

Then check:

- that the inertia switch has not been operated;

- presence of fuel in the tank;

- air intake circuit;

- correct operation of the flow modification valve;

- correct operation of the exhaust manifolds.

- that there are no leaks or seepage from the high and low pressure fuel pipes

Proceed as instructed

See table K052 VEHICLE PROTECTION WARNING LIGHT ON (ENGINE DOES NOT START)

Proceed as instructed

See table K100 MIL WARNING LIGHT NOT WORKING (REMAINS OFF BEFORE STARTING)

Proceed as instructed

See table K136 VEHICLE PROTECTION SYSTEM WARNING LIGHT OFF (INITIAL TEST NOT CARRIED OUT)

Replace the filter element

Op. 1048A14 AIR CLEANER FILTER ELEMENT - REPLACE.

Check that the engine starting electric circuit is working properly

See Test 5520BA ENGINE IGNITION SYSTEM CHECK

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

Check the saturation level of the dust in the particle filter

See Test 1080BE PARTICULATE FILTER SATURATION CHECK

Check the wiring continuity

See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT

Replace the solenoid valve if necessary

Replace electro-pneumatically controlled throttle body

Op. 1060G50 THROTTLE BODY - R.R

Connect the diagnotsic equipment to the diagnostic socket.

Check:

- no errors in control unit

- parameter plausibility

Restore the connection between the engine control unit and the diagnostic connector

See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT

Check

See Test 1060OD INSPECTION OF THE HIGH PRESSURE FUEL CIRCUIT

that the diesel pressure parameter is correct.

Check,

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,

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

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 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

See Test 1044B16 FUEL SUPPLY/RETURN REGULATION VALVE ON FUEL FILTER - R.R.

Replace the fuel filter cartridge

See Test 1044B20 FUEL FILTER FILTERING ELEMENT - REPLACE

Check

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 regulating valve

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

and check that the fault is no longer present.

Replace the pressure pump

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

and check that the fault is no longer present

Replace the engine management control unit

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

and check that the fault is no longer present

Turn the key ON and check that the initial check on the MIL and CODE warning lights takes place.

The MIL warning light should come on and then go out when the engine is started up, whilst the CODE warning light should come on for about 4 seconds and then go out

Then check:

• that the inertia switch has not been operated;
• status of spark plugs and leads;
• no obstructions in the catalytic converter;
• that there is no water in the fuel Move on to Step 11. The CODE warning light remains on

1. Proceed as instructed in the

See table K052 VEHICLE PROTECTION WARNING LIGHT ON (ENGINE DOES NOT START)

2. Proceed as instructed in the

See table K100 MIL WARNING LIGHT NOT WORKING (REMAINS OFF BEFORE STARTING)

3. Proceed as instructed in the

See table K136 VEHICLE PROTECTION SYSTEM WARNING LIGHT OFF (INITIAL TEST NOT CARRIED OUT)

5. Replace the spark plugs

Op. 5510D10 SPARK PLUGS - R+R

6. Replace the leads

Op. 5510D14 SPARK PLUG WIRING LOOM - R+R

7. Replace catalytic converter

Op. 1080B62 CATALYTIC CONVERTER - R + R

8. Clean the tank

See Test 5505AD CHECK ON ENGINE POWER SUPPLY FUSE

Select the following control unit at the diagnostic equipment:

Petrol electronic injection control unit L850 MPFI.

Check the value of the following parameters:

• Battery voltage
• Immobilizer status

See Test 5520BA ENGINE IGNITION SYSTEM CHECK

Search for the cause of the problem by carrying out the

See Test 5505AE CHECK ON ENGINE MANAGEMENT CONTROL UNIT POWER SUPPLY FUSE CIRCUIT

Check there are no faults in the engine starting circuit by performing the

See Test 5520BA ENGINE IGNITION SYSTEM CHECK

Check petrol pump supply and earth

See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT

1. Repair the connections

See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT

Check that the fuel pressure is correct

Op. 0510C10 FUEL SYSTEM - CHECK DELIVERY PRESSURE

Replace the control unit

Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R