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Test results |
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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 cleaner; check the condition of the air intake circuit; check that there are no obstructions in the exhaust pipe |
Go to Step 1 |
Not enough fuel in the tank |
Top up the fuel with the correct amount. |
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No pressure in the fuel circuit |
Go to Step 2 |
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Obstruction in the air intake circuit |
Eliminate the problem, if necessary, replace the filter element Op. 1048A14 AIR FILTER FILTER ELEMENT - REPLACE |
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Air intake via intake manifold/throttle body seal |
Restore the correct seal |
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Exhaust pipe blocked |
Restore the operation of the exhaust pipe. |
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Connect the diagnosis equipment (Examiner or other instruments) to the diagnosis socket and check: - no faults in the engine management control unit; - parameter plausibility |
End of diagnosis |
Error detected in the control unit |
Continue following the instructions on the diagnosis equipment. |
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Key not recognised by the Body Computer |
Go to Step 2 |
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CAN faulty |
Restore CAN |
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Impossible to establish a dialogue with the engine management control unit |
Restore the correct engine management control unit power supply See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT |
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Try to use the emergency key and check if the system recognises it correctly See E7010 CODE |
Go to Step 3 |
Key not recognised |
Go to Step 2 |
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Key recognised |
Replace the key with transponder and record it in the Body Computer memory |
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Check the condition of the code aerial Check that it is correctly connected to the Body Computer See E7010 CODE |
Go to Step 4 |
Aerial defective |
Replace code aerial |
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CODE aerial wiring interrupted |
Restore wiring continuity |
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Check that the Body Computer recognises the key correctly |
Go to Step 5 |
Fault persists |
Replace the body computer Op. 5505A35 MAIN BODY COMPUTER/JUNCTION UNIT - R.R. |
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Check the fuel supply pressure by carrying out See Test 1056BY FUEL SYSTEM SUPPLY PRESSURE CHECK See Test 1056BI FUEL SYSTEM RETURN PRESSURE CHECK See Test 1040AA CHECK ON POWER SUPPLY VOLTAGE AND CURRENT UPTAKE Check the continuity of the wiring between the pump and the junction unit. Check that the pump relay switch is working properly Check the continuity of the wiring between the junction unit and the engine management control unit See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT |
Go to Step 6 |
Fuel pressure too low: pipes obstructed |
Eliminate the constrictions |
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Fuel pressure too low: pump defective |
Replace the pump assembly Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GAUGE CONTROL - R + R |
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Wiring interrupted |
Restore the correct wiring. |
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Inspect the spark plugs and check their operation Check for any defects in the high voltage leads Check for an ignition control signal See Test 5510CE IGNITION CONTROL SIGNAL CHECK Check the operation of the ignition coils by carrying out See Test 5510CI CHECK ON OPERATION OF IGNITION COILS See Test 5510OB IGNITION COIL RESISTANCE CHECK |
Go to Step 7 |
Spark plugs defective |
Replace spark plugs Op. 5510D10 SPARK PLUGS - R+R |
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High voltage cable connection leaking |
Replace HV cables |
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High voltage cable connection slack |
Tighten HV cable correctly |
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Ignition signal interrupted |
Restore the ignition signal |
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Coils defective |
Replace coils Op. 5510C14 IGNITION COIL/S - R.R. |
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Using the Examiner in active diagnosis, check that the injectors are working properly Check that the injector needle seal is correct Check the continuity of the injection wiring See Test 1056BA INJECTOR OPERATION CHECK Check the operation of the main relay switch |
Go to Step 8 |
Injectors stuck/incorrectly adjusted |
Replace the injector Op. 1056B70 INJECTOR (ONE) - R + R WITH FUEL MANIFOLD PIPE REMOVED - INCLUDES SEAL REPLACEMNT |
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Connections not correct |
Restore the correct connections See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT |
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Main relay switch defective |
Replace the relay switch |
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Carry out the cylinder compression test Op. 0510A10 CYLINDER COMPRESSION - CHECK FOR LOOSE SPARK PLUGS OR INJECTORS |
Go to Step 10 |
Cylinder compression insufficient |
Go to Step 9 |
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- R & R head for valve seal test - Check condition of cylinders/piston rings |
Go to Step 10 |
Valve seal insufficient |
Restore the correct seal |
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Cylinders/piston rings worn |
Overhaul the head |
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Check that the engine control unit is working properly. |
End of diagnosis |
Engine management control unit defective |
Replace the engine management control unit Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R |
