| 1 | PRELIMINARY CHECKS | All OK | Problems encountered | Operation | 
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|  | Check that the fuel level is not in the reserve condition | Move on to Step 2 | Fuel level gauge on reserve | Restore the correct level | 
| 2 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation | 
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|  | Check using the Examiner in active diagnosis that the fuel reserve warning light is correctly activated | Move on to Step 3 | The warning light does not flash | Replace the instrument panel    Op. 5560B10  CONTROL PANEL - R+R | 
| 3 | FUEL LEVEL GAUGE CHECK | All OK | Problems encountered | Operation | 
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|  | - Check the insulation of the wiring to the fuel gauge earth- Check the fuel level gauge is working properly | Move on to Step 3 | The wiring is short circuited | Restore wiring insulation | 
| Fuel gauge defective | Change the level gauge    Op. 1040A70  SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GAUGE CONTROL - R + R | 
| 4 | CORRECT OPERATION CHECK | All OK | Problems encountered | Operation | 
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|  | Check that the body computer is working properly | End of diagnosis | Body Computer defective | Replace Body Computer    Op. 5505A35 MAIN BODY COMPUTER/JUNCTION UNIT - R.R. |