198001764 - I021 REAR FOG LAMPS NOT WORKING

When the switch is activated with the dipped headlamps or fog lights on, the rear fog lamp does not work and this fault is signalled by the lights failure warning light. If the rear fog lamp is not working and the Instrument Panel Node does not signal it, also see Table I30 LIGHTS CHECK NOT WORKING. If the dipped headlamps are not working either, firstly see Table I05
Test results
1CHECK USING DIAGNOSTIC EQUIPMENTAll OKProblems encounteredOperation
Connect the Examiner equipment to the diagnostic socket.Check that there are no faults in the body computer.Check the operation of the lights through active diagnosis.Move on to Step 2Rear fog lamp errorRear fog lamp not activatedMove on to Step 2
2INDIVIDUAL LIGHT CHECKAll OKProblems encounteredOperation
Check the condition of the bulb and associated bulb holder;Move on to Step 3Bulb damagedReplace the bulb
Bulb damagedRepair or replace the tail-light
3REAR FOG LAMP ELECTRICAL CIRCUIT CHECKAll OKProblems encounteredOperation

Check the following, in order:

  • connections between centre control panel and Body Computer;
  • connections between Body Computer and rear fog lamp;
  • bulb earth;
  • centre control panel earth: See
Move on to Step 4Connections interruptedRepair the connections: See    See E2031 REAR FOG LAMPS
Connections interruptedRestore the earth: See    See E2031 REAR FOG LAMPS
4REAR FOG LAMP SWITCH CHECKAll OKProblems encounteredOperation
Check the operation of the rear fog lamp switch in the centre control panel: See    See E2031 REAR FOG LAMPS Move on to Step 5Rear fog lamp switch faultyReplace the centre control panel
5CORRECT OPERATION CHECKAll OKProblems encounteredOperation
Check that the fault is no longer presentEnd of diagnosis