2427505 - I04 SIDE LIGHTS / NUMBER PLATE LIGHT AND DIPPED BEAMS DO NOT WORK IN AUTO MODE

The side light/number plate light and dipped beams do not work with the exterior light switch on the stalk unit in AUTO position. N.B.: with the AUTO function the side / no. plate lights and dipped headlamps are automatically switched on by the Body Computer Node which receives the command from the dusk sensor (CPS). The sensitivity of the CPS can be adjusted using the 'Mode' control in the centre control panel. If the dusk sensor is faulty and with the C.L.E. on AUTO, the Body Computer switches on the side/no. plate lights and the dipped headlamps.
Results of the tests
0PRELIMINARY CHECKAll OKProblems metOperation
Check whether the lights come on following a manual control and with Park control Continue to Step 1The lights do not come on or come on incorrectly.Test for dipped beams not working/side lights not working
1CHECK WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation

Connect the Examiner to the tester input and check the body computer for:

  • that there are no faults
Continue to Step 2Presence of faultsContinue according to the instructions for the diagnostic equipment
2ELECTRICAL CIRCUIT CHECKAll OKProblems metOperation

Check, in order:

Continue to Step 3Connection s.c. or o.c. Renew the electrical connections See   E2010  SIDE LIGHTS / NO. PLATE LIGHTS See   E2011  DIPPED HEADLAMPS
3CHECK ON STEERING COLUMN SWITCH UNITAll OKProblems metOperation
Check the operation of the steering column switch unit, in particular the AUTO lights enablement on the stalk unitContinue to Step 4Control not workingReplace the steering column switch unit
4CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer present End of diagnosis