2398768 - I04 SIDE LIGHTS / NUMBER PLATE LIGHT AND DIPPED BEAMS DO NOT WORK IN AUTO MODE

The side/no. plate lights and dipped headlamps do not work using the ring nut on the left steering column switch unit lever in the AUTO position.
in the AUTO position, the side light/number plate light and dipped beams are turned on automatically by the Body Computer Node that receives a command from the dusk sensor.
The sensitivity of the sensor can be adjusted using the Mode control in the control panel.In case of a fault in the dusk sensor and with the ring nut in the AUTO position, the Body Computer Node turns on the side lights/number plate lights and dipped beams regardless.
Results of the tests
0PRELIMINARY CHECKSAll OKProblems metOperation
Turn the ignition ON, place the steering column switch unit lever in the side lights position and then the dipped beams position and check that the lights come onContinue to Step 1The side/no. plate lights do not come on in the manual positionContinue according to the instructions for the See table   I01  SIDE LIGHTS/NO. PLATE LIGHTS NOT WORKING
The dipped headlamps do not come on in the manual positionContinue according to the instructions for the See table   I02  PARKING LIGHTS NOT WORKING
1DUSK SENSOR ELECTRICAL CIRCUIT CHECKAll OKProblems metOperation
Check that the connections between the Body Computer and the dusk sensor and between the steering column switch unit and the Body Computer are correct See   E2011  DIPPED HEADLAMPS Continue to Step 2Connections faultyRestore the correct electrical connections for the sensor See   E2011  DIPPED HEADLAMPS If necessary, replace the faulty components (if a fuse is involved, search for the cause of the problem first)
2CHECK ON STEERING COLUMN SWITCH UNITAll OKProblems metOperation
Check that the steering column switch unit is working properly in all position, in particular checking the continuity and insulation in all positionsContinue to Step 3Steering column switch unit faultyReplace the stalk unit Op.   5550A12 
3REPLACING DUSK SENSORAll OKProblems metOperation
Replace the rain/dusk sensor Op. 5050B66and check that it works properlyEnd of diagnosisThe fault persistsRestore the original rain/dusk sensor and replace the Body Computer Op.   5505A32