2582409 - 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
1CHECK WITH EXAMINER DIAGNOSTIC INSTRUMENTAll OKProblems metOperation
Connect the EXAMINER diagnostic equipment to the diagnostic socket.Check that there are no faults in the Body ComputerContinue to Step 2Main beam headlamps relay short circuit to +V BatteryRestore connections See   E2012  MAIN BEAM HEADLAMPS
2CHECK INDIVIDUAL LIGHTSAll OKProblems metOperation
Check the condition of individual bulbs and light units.Continue to Step 3Bulbs damagedReplace bulbs Op.   5540B22 
Light unit faultyRepair or change the front light unit Op.   5540B79 
3MAIN BEAM HEADLAMPS ELECTRICAL CIRCUIT CHECKAll OKProblems metOperation

Check, in order:

  • left and right main beam headlamp fuses;
  • connection between steering column switch unit and Body Computer;
  • connection between Body Computer and junction unit;
  • connections between junction 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 connections See   E2012  MAIN BEAM HEADLAMPS
Bulb earth faultyRestore the earth to the bulbs See   E2012  MAIN BEAM HEADLAMPS
4CHECK 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 relay Continue to Step 5Incorrect supplyRestore the supply See   E2012  MAIN BEAM HEADLAMPS
Body Computer faultyReplace the Body Computer Op.   5505A32 
5STEERING COLUMN SWITCH UNIT CHECKAll OKProblems metOperation
Check that the stalk unit is working properly; in particular check the side lights switchContinue to Step 6Stalk unit faultyReplace the steering column switch unit Op.   5550A12 
6CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentFault persistsSearch for the fault starting from another symptom'