2427507 - I06 MAIN BEAM HEADLAMPS NOT WORKING

With the dipped headlamps switched on (stable position) or in the flashing mode, when the stalk unit ring nut is operated, the main beam headlamps do not work
Results of the tests
1CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Connect the Examiner to the diagnostic socket

Check:

  • that there are no faults in the Body Computer
  • the operation of the lights in active diagnosis.
Continue to Step 3Error - (main beam headlamps relay)Check - main beam headlamps relay/main beam headlamps electrical circuit.Continue to Step 3
Lights not activated Check the individual lights. Continue to Step 2
2CHECK ON INDIVIDUAL LIGHTSAll OKProblems metOperation
Check the condition of individual bulbs and light units.Continue to Step 3Bulbs damagedReplace bulbs
Bulbs damagedRepair or replace front lights cluster
Bulbs damagedRepair or replace front lights cluster
3MAIN BEAM HEADLAMPS ELECTRICAL CIRCUIT CHECKAll OKProblems metOperation

Check, in order:

  • left and right main beam headlamp fuses
  • main beam headlamps relay;
  • connection between steering column switch unit and Body Computer;
  • connection between Body Computer and engine compartment control unit;
  • connections between engine bay control unit and bulbs;
  • bulb earth: See   E2012  MAIN BEAM HEADLAMPS
Continue to Step 4Blown fusesReplace the fuses, then search for the cause of the problem
Connections not correctRestore the connections: See   E2012  MAIN BEAM HEADLAMPS
Lamps earth defectiveRestore the earth to the bulbs : See   E2012  MAIN BEAM HEADLAMPS
4CHECK ON STEERING COLUMN SWITCH UNITAll OKProblems metOperation
Check that the steering column switch unit is working properly: See   E2012  MAIN BEAM HEADLAMPS Continue to Step 5Stalk unit faultyReplace the stalk unit
5CHECK ON BODY COMPUTERAll OKProblems metOperation
Check that the Body Computer is supplied properlyCheck that when an earth signal from stalk unit to Body is activated, an earth signal is emitted from the Body to drive the dipped beam headlamps relayContinue to Step 6Incorrect supplyRestore the supply : See   E2012  MAIN BEAM HEADLAMPS
Body Computer defectiveReplace the Body Computer
6CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosis