312000230 - I029 FOG LIGHTS AND REAR FOG LAMPS NOT WORKING

Test results
N.B: The fog lights and rear fog lights are controlled by the Body Computer Node. The lights can be switched on/off only by the button in the centre control panel on the dashboard
1BULB CONDITION CHECKAll OKProblems encounteredOperation
Check the condition of the fog light bulbsCheck the condition of the rear fog light bulbMove on to Step 21. Fog light bulbs fault2. Rear fog light bulbs fault1. Replace fog light bulbs    Op. 5540D14 L/H OR R/H FOG LIGHT BULB (ONE) - R+R 2. Replace rear fog light bulbsOp. 5540E14
2CHECK USING DIAGNOSTIC EQUIPMENT.All OKProblems encounteredOperation
Connect the Examiner and check the following at the Body Computer Node:

  • that there is no fault
  • the plausibility of the fog lights/rear fog lights on/off parameter
Move on to Step 31. Presence of dipped headlights relay fault2. The fog lights/rear fog lights do not come on3. The fog lights/rear fog lights come on1. Continue following the instructions for the diagnostic equipment2. Move on to Step 43. Move on to Step 3
3ELECTRICAL SYSTEM CHECKAll OKProblems encounteredOperation
Check the continuity of the wiring between the button and the Body ComputerCheck that the fog lights/rear fog lights control button is working    See E2030 FOG LIGHTS     See E2031 REAR FOG LAMPS Move on to Step 4Wiring interruptedRestore the correct wiring continuity.
4ELECTRICAL SYSTEM CHECKAll OKProblems encounteredOperation
Check the continuity of the wiring between the Body Computer and the engine compartment control unitCheck the continuity of the wiring between the engine compartment control unit and the fog lightsCheck the continuity of the wiring between the Body Computer and the rear fog lightsCheck the condition of the engine compartment control unitCheck that the fog light relay is working properly    See E2030 FOG LIGHTS     See E2031 REAR FOG LAMPS Move on to Step 51. Wiring interrupted2. Fog light relay defective3. Engine compartment control unit defective1.Renew the correct wiring.2.Replace relay3.Replace the engine compartment junction unitOp. 5505A13 ADDITIONAL JUNCTION UNIT IN ENGINE COMPARTMENT - R.R.
5FOG LIGHTS / REAR FOG LIGHTS CONTROL CHECKAll OKProblems encounteredOperation
Check that the fog lights/rear fog lights control button is workingMove on to Step 6Fog lights/rear fog lights activation control button faultyReplace fog lights/ rear fog lights control panel    Op. 7040A56 SWITCH UNIT IN DASHBOARD - R.R.
6CORRECT OPERATION CHECKAll OKProblems encounteredOperation
Check that the fault is no longer presentEnd of diagnosisThe fault persistsReplace body computer    Op. 5505A32 BODY COMPUTER - R.R