3360271 - K21 FUEL RESERVE WARNING LIGHT NOT WORKING

With the ignition ON, the fuel reserve warning light in the instrument panel does not come on when the tank is empty;
the warning light on message is sent by the 'body computer node' to the 'instrument panel node' via the B-CAN network.
Results of the tests
1CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation

Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket and check:

  • the operation of the warning light through active diagnosis.
Continue to Step 2The warning light does not come onReplace instrument panel Op. 5560B11
2CHECKING CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentFault persistsReplace the Body Computer Op. 5505A32Search for the fault starting from another symptom'
3FUEL LEVEL SENSOR CHECKAll OKProblems metOperation
Check the operation of the fuel level sensor, see test ---Continue to Step 4Sensor not workingReplace the fuel pump assembly Op.   1040A70 
4CHECKING ELECTRICAL CIRCUITAll OKProblems metOperation
Check the continuity/insulation of the cable between the fuel level sensor and the Body Computer : See   E4010  INSTRUMENT PANEL Continue to Step 5Cables broken or not insulatedRestore continuity or insulation: See   E4010  INSTRUMENT PANEL
5CHECKING CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentFault presentSearch for the fault starting from another symptom'