2427508 - I07 DIPPED BEAM (ONE) RH OR LH NOT WORKING/

When the steering column switch unit ring nut is operated with the ignition ON, one of the dipped headlamps does not work.
Results of the tests
1CHECK ON INDIVIDUAL LIGHTSAll OKProblems metOperation
Check the condition of individual bulbs and light units.Continue to Step 3Bulbs damagedReplace bulbs
Front right light cluster faultyRepair or replace front lights cluster
Front left light cluster faultyRepair or replace front lights cluster
2CHECKING BRAKE HYDRAULIC SYSTEMAll OKProblems metOperation

Check, in order:

  • left or right dipped headlamp fuses;
  • connections between dashboard control unit and bulbs;
  • bulb earth: See   E2011  DIPPED HEADLAMPS
Continue to Step 3Defective componentReplace the component involved (if a fuse is involved, search for the cause of the problem)
Defective componentRestore the connections: See   E2011  DIPPED HEADLAMPS
Defective componentRestore the earth to the bulbs : See   E2011  DIPPED HEADLAMPS
3CHECKING FACIA CONTROL UNITAll OKProblems metOperation
Check the continuity of the facia control unit internal circuit See   E2021  BRAKE LIGHTS Continue to Step 4Facia control unit circuit brokenChange the facia junction unit
4CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer present End of diagnosis