2888394 - K20 FUEL LEVEL GAUGE NOT WORKING

With the ignition key in the ON position, the fuel gauge indicator is not working properly (it indicates a different level from what is actually in the tank)
Results of the tests
1FUEL GAUGE ELECTRICAL CIRCUIT CHECKAll OKProblems metOperation

Check:

  • the connection between the fuel gauge and the instrument, through the junction unit
  • the instrument supply
  • the instrument earth
( See   E4010  INSTRUMENT PANEL ).
Continue to Step 2Connections brokenRestore the connections
2FUEL GAUGE CHECKAll OKProblems metOperation
Check the operation of the fuel gauge.In particular, check that the drip tray is correctly fitted as it could impede the float.Continue to Step 3Sender unit defectiveReplace the sender unit inside the fuel pump Op.   1040A70 
3CHECK INSTRUMENTAll OKProblems metOperation
Check the instrument is working properly, particularly the fuel level signal check device see DESCRIPTION AND OPERATION: 5560 INSTRUMENT PANELContinue to Step 4Instrument not workingChange the instrument Op.   5560B10 
4CHECKING CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisFault persistsSearch for the fault starting from another symptom'