22 · Diagnostics

Fuel level gauge not working

Fault diagnosisFuel level gauge not working

FUEL LEVEL GAUGE NOT WORKING

1.2 8v, 1.3 Multijet, 1.4 16v

With the ignition ON, the fuel level gauge in the instrument panel does not work (level indicated is not actual tank level).

N.B: The fuel level message is provided by the Body Computer Node and made available to the Instrument Panel Node via the B-CAN.

The Body Computer Node also sends the fuel level sensor error message

1	CHECK USING DIAGNOSTIC EQUIPMENT	All OK	Problems encountered	Operation
		Test results
	Connect the Examiner diagnostic equipment to the diagnostic socket. Check that there are no faults in the Body Computer	Move on to Step 2	Sensor with broken circuit, sensor short circuited, value implausible/not consistent with actual fuel level	Continue as instructed by the diagnostic equipment
2	CHECK USING DIAGNOSTIC EQUIPMENT	All OK	Problems encountered	Operation
	Keeping the Examiner equipment connected to the diagnostic socket, check the operation of the fuel gauge bar LED in active diagnosis	Move on to Step 3	The bar LED does not move	Replace the Instrument Panel Op. 5560B10 CONTROL PANEL - R+R
3	CHECK FUEL LEVEL SENSOR	All OK	Problems encountered	Operation
	Check that the fuel level sensor is working properly	Move on to Step 4	Sensor not working	Replace the fuel level sensor Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GAUGE CONTROL - R + R
4	ELECTRICAL CIRCUIT CHECK	All OK	Problems encountered	Operation
	Check the continuity/insulation of the lead between fuel level sensor and Body Computer See E4010 INSTRUMENT PANEL	Move on to Step 5	Lead broken	Restore the correct continuity for the cable.
5	CORRECT OPERATION CHECK	All OK	Problems encountered	Operation
	Check that the fault is no longer present	End of diagnosis	The fault persists	Replace Body Computer Op. 5505A32 BODY COMPUTER - R.R

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