Workshop Manuals Factory service & repair Lancia
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Lancia Ypsilon Factory Service Manual (2003-2011)22 · Fault diagnosis
22 · Diagnostics

Fuel level gauge not working

Make
Lancia
Model
Ypsilon Factory Service Manual
Year
2003–2011
Section
Instrument panel › Fuel level gauge not working
Fault diagnosisFuel level gauge not working

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)

the fuel level message is supplied by the 'body computer node' and is made available to the 'instrument panel node' via the B-CAN network; the 'body computer node' also sends the fuel level sensor error message.

Results of the tests
1CHECK WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation

Connect the Examiner to the diagnostic socket

Check that there are no faults in the Body Computer

Continue to Step 2Sensor with broken circuit, sensor short circuited, value inconsistent/implausible in relation to actual fuel level.Continue according to the instructions for the diagnostic equipment
2CHECK WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Keeping the Examiner connected to the diagnostic socket, check the operation of the pointer in active diagnosisContinue to Step 3The pointer does not moveReplace instrument panel Op. 5560B11
3FUEL LEVEL SENSOR CHECKAll OKProblems metOperation
Check the operation of the fuel level sensor.Continue to Step 4Sensor not workingReplace the fuel pump assembly
4ELECTRICAL CIRCUIT CHECKAll OKProblems metOperation
Check the continuity of the cable between the fuel level sensor, the Body Computer and the instrument panel See E4010 INSTRUMENT PANELContinue to Step 5Cables broken/not insulatedRestore cable continuity/insulation: See E4010 INSTRUMENT PANEL
5CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisThe fault persistsReplace the Body Computer Op. 5505A32

Parts & tools for this job Staging For 2003 Lancia Ypsilon

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