3022624 - I21 REAR FOG LAMPS NOT WORKING

When the rear fog lamp switch is operated with the dipped beam headlamps on (or front fog lamps on), the rear fog lamp does not work, and this fault is indicated by the relevant warning light.If the rear fog lamp does not work and the check on the Body Computer does not indicate this  See table I30  LIGHTS CHECK NOT WORKING.If the dipped beam headlamps do not work either, first see  See table I05  DIPPED HEADLAMPS NOT WORKING
Results of the tests
1CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Connect the Examiner diagnostic equipment to the diagnostic socket.Check that there are no faults in the Body ComputerCheck light operation while in active diagnosis mode.Continue to Step 2Rear fog lamp errorRear fog lamp does not activateContinue to Step 2
2CHECKING INDIVIDUAL LIGHTAll OKProblems metOperation
Check the condition of the individual bulbs and the bulb holder assemblyContinue to Step 3Bulbs damagedReplace bulbs
Bulb holder assembly faultyRenew or replace the tail light cluster Op.   5540E10 
3CHECK REAR FOG LAMP ELECTRICAL CIRCUITAll OKProblems metOperation

Check, in order:

  • connections between rear fog lamp switch and Body Computer
  • connections between Body Computer and bulbs
  • bulb earth
  • rear fog lamp switch earth: See   E2031  REAR FOG LAMPS
Continue to Step 4Connections brokenRestore the connections: See   E2031  REAR FOG LAMPS
Faulty earthRepair the earth: See   E2031  REAR FOG LAMPS
4CHECKING REAR FOG LAMP SWITCHAll OKProblems metOperation
Check rear fog lamp switch operation See   E2031  REAR FOG LAMPS Continue to Step 5Rear fog lamp switch faultyReplace the control panel Op.   5505A24 
5CHECKING CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentFault persistsSearch for the fault starting from another symptom'