22 · Diagnostics

Fuel level gauge not working

Make: Alfa Romeo
Model: 147 Factory Service Manual
Year: 2000–2004
Section: Instrument panel › Fuel level gauge not working

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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)

1	CHECKING WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
		Results of the tests
	Connect an Examiner to the diagnostic socket Verify: that there are no faults in the Body Computer	Continue to Step 2	Sensor with broken circuit, sensor short circuited, value inconsistent/implausible in relation to actual fuel level.	Continue to Step 2
2	CHECKING WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Keeping the Examiner connected to the diagnostic socket. Check, by active diagnosis, that the pointer is working	Continue to Step 3	The pointer does not move	Panel defective, replace the instrument panel Op. 5560B11
3	FUEL LEVEL SENSOR CHECK	All OK	Problems met	Operation
	Check the operation of the fuel level sensor.	Continue to Step 4	Sensor not working	Replace the fuel pump assembly Op. 1040A70
4	CHECKING ELECTRICAL CIRCUIT	All OK	Problems met	Operation
	Check the continuity/insulation of the cable between the fuel level sensor and the Body Computer: See E4010 INSTRUMENT PANEL	Continue to Step 5	Wires broken/not insulated	Restore cable continuity/insulation: See E4010 INSTRUMENT PANEL
5	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present		Body Computer faulty	Replace the Body Computer Op. 5505A32 Search for the fault starting from another symptom'

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Parts & tools for this job For 2000 Alfa Romeo 147

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