244000471 - I20 FOG LIGHTS NOT WORKING

The fog light does not work when the button on the relevant switch unit is operated with the key ON and the side lights - 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. 5540D14 L/H OR R/H FOG LAMP BULB (ONE) - R+R
2.Front light cluster fault2. Repair or change the front light cluster    Op. 5540D13 RIGHT FOG LIGHT - R.R.
2FOG LIGHT ELECTRICAL CIRCUIT CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the following, in order:

  • Fog light fuses;
  • Connections between battery, engine bay control unit, fog light relay and bulbs;
  • 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 E2030 FOG LIGHTS
3FOG LIGHT ELECTRICAL CIRCUIT CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the following, in order:

  • Connections between battery, ignition switch, facia control unit, engine bay control unit, fog light relay and switch control unit
  • Connections between stalk unit and switch control unit
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 E2030 FOG LIGHTS
4STEERING COLUMN SWITCH UNIT CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check that the stalk unit is working properly: particularly the side light activation data output    See E2030 FOG LIGHTSMove on to StepStalk unit not working properlyReplace the steering column switch unit    Op. 5550A12 COMPLETE STALK UNIT - R+R FOR VERSIONS WITH AIR BAG
5FOG LIGHT RELAY CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the fog light relay is working properly    See E2030 FOG LIGHTSMove on to StepFog light relay not working properlyChange the dipped beam relay    Op. 5550A12 COMPLETE STALK UNIT - R+R FOR VERSIONS WITH AIR BAG
6IGNITION SWITCH CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the ignition switch is operating correctly: particularly the fog lamp relay power supply    See E2030 FOG LIGHTSMove on to StepIgnition switch faultRepair or replace the ignition switch    Op. 5520A12 IGNITION SWITCH ASSEMBLY - R R FOR VERSIONS WITH AIR BAG
7SWITCH CONTROL UNIT CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the following, in order:

  • Correct power supply to switch control unit
  • Check that side light activation output data is present when the stalk switch wheel is turned
  • Check that an earth signal is generated to control the fog light relay when the fog light button is activated
Move on to Step1. Connections interrupted1. Repair the connections    See E2030 FOG LIGHTS
2. Switch control unit fault2. Change the switch control unit
8ENGINE BAY CONTROL UNIT CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the following, in order:

  • Correct power supply to the engine bay control unit;
  • Check that an earth signal is generated to control the dipped beam relay when the fog light button is activated
Move on to Step1. Connections interrupted1. Repair the connections    See E2030 FOG LIGHTS
2. Engine bay control unit fault2. Change the engine bay control unit    Op. 5505A13 SUPPLEMENTARY JUNCTION CONTROL UNIT IN ENGINE BAY - R R
9CHECK ON CORRECT OPERATIONALL OKPROBLEMS ENCOUNTEREDACTION
Check that the fault is no longer present