2398867 - K144 ONE WARNING LIGHT ACTIVATED BY STEERING COLUMN SWITCH UNIT ON CONSTANTLY

When the lights are switched off with the stalk unit, the relevant warning light on the instrument panel does not go out

The warning lights activated from the stalk unit are:

  • Side/number plate lights
  • Main beam headlamps
  • Direction indicators
Results of the tests
0PRELIMINARY CHECKSAll OKProblems metOperation

With the ignition on, switch on and off from the stalk unit all the lights in question, namely:

  • With the ring nut, side/number plate lights
  • With the lever, main beam headlamps (both on permanently and flashing)
  • With the lever, direction indicators (right and left)
and check that they come on/go out
Continue to Step 1The side lights are not workingContinue as instructed See table   I01  SIDE LIGHTS/NO. PLATE LIGHTS NOT WORKING
The main beam headlamps do not workContinue as instructed See table   I06  MAIN BEAM HEADLAMPS NOT WORKING
The direction indicators do not work on both sidesContinue as instructed See table   I10  DIRECTION INDICATORS / HAZARD WARNING LIGHTS
The direction indicators do not work on one sideContinue as instructed See table   I12  TURN SIGNALS RH OR LH SIDE NOT WORKING
1CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Using the Examiner check, in the Instrument Panel Node ambient, that there are no errors and the following parameters are present.Continue to Step 2There are errorsContinue in accordance with the instructions for the diagnostic equipment
2ELECTRICAL POWER SUPPLY CHECKAll OKProblems metOperation
Check that the Instrument Panel Node electrical power supply is correct.Continue to Step 3Positive and/or earth electrical power supply fault. Replace the defective component (if a fuse is involved, search for the cause of the problem).
3CHECK ELECTRICAL CONNECTIONSAll OKProblems metOperation
Check the electrical connections between the Body Computer and the Instrument Panel, in particular that each individual pin is correctly connected. Continue to Step 4Electrical connections not working.Restore damaged electrical connections.
4CHECK WITH ACTIVE DIAGNOSISAll OKProblems metOperation
With the Examiner in the Instrument Panel Node ambient, check, in active diagnosis, that the warning lights in question are correctly activatedContinue to Step 5The warning lights do not flashReplace the instrument panel Op. 5060B11
5CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Using the Examiner, check, in the Body Computer Node ambient, that there are no errors and that the warning light status variesContinue to Step 6Impossible to connect with the Body Computer control unit.Continue to Step 6
Errors present. Continue in accordance with the instructions for the diagnostic equipment.
The parameter values do not changeContinue to Step 8
6ELECTRICAL POWER SUPPLY CHECKAll OKProblems metOperation
Check that the Body Computer Node electrical power supply is correct.Continue to Step 7Positive and/or earth electrical power supply fault. Replace the defective component (if a fuse is involved, search for the cause of the problem).
7CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Using the Examiner, check the possibility of connecting with the Body Computer Node. Continue to Step 5Impossible to connect with the Body Computer control unit.Replace the Body Computer Op.   5505A32 
8CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisThe fault persistsReplace the Body Computer Op.   5505A32