Check that the fuel cut off has not been activated

Check that there is enough fuel in the tank.

Turn the ignition switch ON for 2 seconds and then OFF.

Check that the fuel pipe feels the pressure with the ignition ON.

Check:

• Check the condition of the air filter;
• Check the condition of the air intake circuit;
• Check that there are no obstructions in the exhaust pipe

1. Activation of fuel cut off

2. Not enough fuel in the tank

3. No pressure in the fuel circuit

4. Obstruction in the air intake circuit

5. Air intake via the inlet manifold/throttle body seal

6. Exhaust pipe blocked

1. Restore correct operation by carrying out the

See Test

2. Top up the fuel with the correct amount.

3. Move on to Step 2.

4. Eliminate the problem, if necessary, replace the filter element

Op. 1048A14 AIR CLEANER FILTER ELEMENT - REPLACE.

5. Restore the correct seal

6. Restore the operation of the exhaust pipe.

Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket and check:

• no faults in the engine management control unit;
• parameter plausibility

1. Error detected in the control unit

2. Parameter not consistent

1. Continue following the instructions on the diagnostic equipment.

2. Continue following the instructions on the diagnostic equipment.

Check that the ignition switch is working correctly by carrying out the

See Test 5520AA IGNITION SWITCH EFFICIENCY CHECK

Replace the ignition switch

Op. 5520A10 IGNITION SWITCH ASSEMBLY - R+R

Check the operation of the rpm sensor by carrying out the

See Test 5510CD RPM SENSOR AND COIL OPERATION CHECK

See Test 5510CF RPM SIGNAL CHECK

1. Sensor defective

2. Wiring defective

1. Replace the rpm sensor

Op. 5510C26 ENGINE RPM SENSOR - R+R

2. Restore the correct wiring.

Check the fuel supply pressure by carrying out the

See Test 1056BY FUEL SYSTEM SUPPLY PRESSURE CHECK

Check the continuity of the wiring between the pump and the junction unit.

Check that the submerged pump is working properly by carrying out the

See Test 1040AB SUBMERGED FUEL PUMP CHECK

Check the continuity of the wiring between the junction unit and the engine control unit

See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT

1. Fuel pressure too low: pipes obstructed

2. Fuel pressure too low: pump defective

3. Wiring broken

1. Eliminate the constrictions

2. Replace the pump assembly

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

3. Restore the correct wiring.

Inspect the spark plugs and check their operation

Check for any defects in the high voltage leads

Check for the ignition control signal by carrying out the

See Test 5510CE IGNITION CONTROL SIGNAL CHECK

Check that the ignition coils are working by carrying out the

See Test 5510CI IGNITION COIL OPERATION CHECK

1. Spark plugs defective

2. High voltage cable connection leaking

3. High voltage cable connection slack

4. Ignition signal interrupted

5. Coils defective

1. Replace spark plugs

Op. 5510D10 SPARK PLUGS - R+R

2. Replace HT leads.

3. Tighten HT lead correctly.

5. Restore the ignition signal.

4. Replace coils

Op. 5510C14 IGNITION COIL/S - R.R.

Using the Examiner in active diagnosis, check that the injectors are working properly

Check that the injector opening is correct

Check the continuity of the injection wiring

Check the operation of the main relay

1. Injectors stuck

2. Wiring broken

3. Main relay defective

1. Replace the injectors.

Op. 1056B70 INJECTOR (ONE) - R + R WITH FUEL MANIFOLD PIPE REMOVED - INCLUDES SEAL REPLACEMNT

2. Restore correct wiring

See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT

3. Replace the relay

Carry out the cylinder compression check

Op. 0520G15 COMPRESSION TEST - CHECK WITH EXAMINER WITH SPARK PLUGS/INJECTORS REMOVED

R & R head to check valve seal

Check condition of cylinders/piston rings

1. Valve seal insufficient

2. Cylinders/piston rings worn

1. Restore the correct seal.

2. Overhaul the head.

Replace the engine management control unit

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

Turn the key ON and check that the initial check on the MIL and VEHICLE PROTECTION 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 FUEL CUT OFF activated message is not present in the instrument panel
• presence of fuel in the tank;
• air intake circuit;
• correct operation of the exhaust manifolds.

1. The VEHICLE PROTECTION warning light stays on

2. The MIL warning light does not carry out the initial test

3. Presence of FUEL CUT OFF activated message

4. Lack of fuel

5. Filter dirty or partly blocked

6. Exhaust blocked

1. Continue following the instructions in the Table

See K052 ENGINE OIL LEVEL AND TEMPERATURE SENSOR

2. Continue following the instructions in the Table

See K053 LPG PRESSURE SENSOR

3. Carry out the

See Test

4. Add fuel to the tank

5. Replace the filter element

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

6. Restore exhaust manifolds to working order

Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket.

Check:

• that there are no errors in the control unit;
• parameter plausibility

1. Error detected in the control unit

2. Parameters not plausible

3. No communication with the control unit

1. Continue following the instructions on the diagnostic equipment

2. Continue following the instructions on the diagnostic equipment

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

Check correct operation of the rpm sensor by carrying out the

See Test 1060GI ENGINE SPEED CHECK

Check the continuity/insulation of the wiring between the sensor and the engine control unit

See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT

Check that the sensor is correctly positioned

1. Rpm sensor defective

2. Wiring defective

3. Rpm sensor not correctly positioned

1. Replace the sensor

Op. 1060G20 ENGINE RPM SENSOR - R.R.

2. Restore correct wiring

3. Position the sensor correctly

Check correct operation of the timing sensor by carrying out the

See Test 1060GC TIMING SENSOR OPERATION CHECK

Check the continuity/insulation of the wiring between the sensor and the engine control unit

See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT

Check that the sensor is correctly positioned

1. Timing sensor defective

2. Wiring defective

1. Replace the timing sensor

Op. 1060G22 CAM ANGLE SENSOR - R.R

2. Restore correct wiring

Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket.

Check that the diesel pressure parameter is correct by carrying out the

See Test 1060OD HIGH PRESSURE FUEL CIRCUIT CHECK

Check that the diesel pressure is correct by carrying out the

See Test 1060OB LOW FUEL DELIVERY PRESSURE CIRCUIT CHECK

1. Electric pump defective

2. Pump wiring broken

1. Replace the electric pump

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

2. Restore correct wiring

See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT

Check that the electrical connection between the engine management control unit and the injectors is correct

See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT

With the Examiner in active diagnosis check that the injectors are working properly by carrying out the

See Test 1060FA INJECTOR OPERATION CHECK

Replace the injectors

Op. 1060F10 FUEL INJECTORS - R.R.

Check that the injectors are not leaking by carrying out the

See Test 1060OC INJECTOR SEAL TEST

Replace the injectors

Op. 1060F10

Replace the engine management control unit

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

Replace the high pressure pump

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