244000472 - I21 REAR FOG LAMPS NOT WORKING

The rear fog lights do not work when the button on the relevant switch unit is operated with the key ON and the dipped beams on.
STEPOPERATIONS TO BE CARRIED OUTTEST RESULTS
1INDIVIDUAL LIGHT CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the condition of the bulbs and associated bulb holder;Move on to Step1. Bulbs damaged1. Change the bulbs    Op. 5540A74 BULB OF A SIDELIGHT OR FOG LAMP OR REVERSING LIGHT IN A TAIL-LIGHT, LH OR RH R R
2. Tail-light cluster fault2. Replace or change the tail-light cluster    Op. 5540A44 L/H OR R/H TAIL LIGHT (ONE) - R+R
2REAR FOG LIGHT ELECTRICAL CIRCUIT CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the following, in order:

  • Connections between battery, ignition switch, facia control unit, switch control unit;
  • Connections between stalk unit and switch control unit;
  • Connections between switch control unit and bulbs;
  • Stalk unit earth;
  • Bulb earth
Move on to Step1. Component defective1. Replace defective component (in the case of a fuse, find out what caused it to blow).
2. Connections interrupted2. Repair the connections    See E2031 REAR FOG LAMPS
3STEERING COLUMN SWITCH UNIT CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check that an earth signal output is generated to the switch control unit when the stalk switch wheel is turned to dipped/main beam    See E2031 REAR FOG LAMPSMove on to StepStalk unit not working properlyReplace the steering column switch unit    Op. 5550A12 COMPLETE STALK UNIT - R+R FOR VERSIONS WITH AIR BAG
4SWITCH CONTROL UNIT CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the following, in order:

  • Correct power supply to switch control unit
  • Check that an battery voltage output is generated to control the rear fog light bulbs when the rear fog light button is activated
Move on to Step1. Power supply incorrect1. Switch control unit fault
2. Restore correct power supply    See E2031 REAR FOG LAMPS2. Change switch control unit
5CHECK ON CORRECT OPERATIONALL OKPROBLEMS ENCOUNTEREDACTION
Check that the fault is no longer present