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| 0 | PRELIMINARY CHECKS | All OK | Problems encountered | Operation | 
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|  | Bleed the air and check the fault does not recur. | End of diagnosis | The fault recurs | Move on to Step 1 | 
| 1 | CHECK ON THE EFFICIENCY OF THE EXPANSION TANK CAP | All OK | Problems encountered | Operation | 
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|  | Check the efficiency of the expansion tank cap. | Move on to Step 2 | Cap inefficient. | Replace the cap. | 
| 2 | COOLING SYSTEM LEAKAGE TEST | All OK | Problems encountered | Operation | 
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|  | Check the seal of the cooling system    Op. 0510C30  ENGINE COOLING SYSTEM - LEAKAGE TEST | Move on to Step 3 | There are engine cooling system leaks. | Proceed as instructed in the    See table X10  ENGINE COOLANT LEAKS | 
| 3 | CHECK FOR GURGLING | All OK | Problems encountered | Operation | 
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|  | Check that no gurgling or oil is present in the coolant reservoir. | Move on to Step 4 | Presence of fluid or air bubbles: head gasket damaged. | Replace the damaged gasket. | 
| 4 | CHECK CYILNDER HEAD HYDRAULIC SEAL | All OK | Problems encountered | Operation | 
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|  | Check the hydraulic seal of the cylinder head. | Move on to Step 5 | Seal not efficient. | (only for 3.2 V6 version)Remove the cylinder head    Op. 1016C10  SINGLE CYLINDER HEAD - R.R. AND REPLACE GASKET (only for 3.2 V6 version) Replace the head    Op. 1016D10 CYLINDER HEAD – R.R. AND REPLACE GASKETS | 
| 5 | CHECK ENGINE MONOBLOC HYDRAULIC SEAL | All OK | Problems encountered | Operation | 
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|  | Check the hydraulic seal of the monobloc | Move on to Step 6 | Seal not efficient. | Replace the monobloc | 
| 6 | CHECK ON CORRECT OPERATION | All OK | Problems encountered | Operation | 
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|  | Check that the fault is no longer present. | End of diagnosis | The fault persists. | Contact Technical Service for further information on the problem. |