323000840 - K144 ONE WARNING LIGHT ACTIVATED BY STEERING COLUMN SWITCH UNIT ON CONSTANTLY

When the lights are deactivated using the steering wheel interface, the associated warning light on the instrument panel does not switch off
The warning lights activated when the steering wheel interface is operated are:- Side lights/number plate lights- Main beam headlamps- Direction indicators
Test results
0PRELIMINARY CHECKSAll OKProblems encounteredOperation
With the key to MAR, turn all the lights on and off from the steering wheel interface, i.e.:- using the wheel, side lights/number plate lights;- with the stalk, main beams (both fixed and flashing positions);- with the stalk, direction indicators (right and left) and check they turn on/offMove on to Step 11. The side lights do not work2. The full beam headlamps do not work3. The direction indicators do not operate on both sides4. The direction indicators do not operate on one side1. Continue as indicated    See table I001 SIDE LIGHTS/NO. PLATE LIGHTS NOT WORKING 2. Continue as indicated    See table I006 MAIN BEAM HEADLAMPS NOT WORKING 3. Continue as indicated    See table I010 DIRECTION INDICATORS / HAZARD WARNING LIGHTS NOT WORKING 4. Continue as indicated    See table I012 LEFT OR RIGHT DIRECTION INDICATORS NOT WORKING
1CHECK USING DIAGNOSTIC EQUIPMENTAll OKProblems encounteredOperation
Using an Examiner in Instrument Panel Node mode, check that there are no errors and that the parameters are presentMove on to Step 2Presence of errorsContinue following the instructions on the diagnostic instrument
2ELECTRICAL POWER SUPPLY CHECKAll OKProblems encounteredOperation
Check the electrical power supply to the Instrument Panel Node is correctMove on to Step 3Fault in positive electrical supply and/or earthReplace defective component (in the case of a fuse, find out what caused it to blow)
3ELECTRICAL CONNECTIONS CHECKAll OKProblems encounteredOperation
Check the electrical connections between the Body Computer and the Instrument Panel. In particular, check that each individual pin is properly connectedMove on to Step 4Electrical connections not operationalRenew the damaged electrical connections
4ACTIVE DIAGNOSIS CHECKAll OKProblems encounteredOperation
Using an Examiner in Instrument Panel Node mode, check that the warning lights in question activate correctly in Active DiagnosisMove on to Step 5The warning lights do not flashReplace the Instrument Panel    Op. 5560B10 CONTROL PANEL - R+R
5CHECK USING DIAGNOSTIC EQUIPMENTAll OKProblems encounteredOperation
Using an Examiner in Body Computer Node mode, check that there are no errors and that the warning light changes stateMove on to Step 61. Impossible to connect to the Body Computer control unit2. Presence of errors3. The parameters do not change1. Move on to Step 62. Continue by following the instructions on the diagnostic instrument3. Move on to Step 7
6ELECTRICAL POWER SUPPLY CHECKAll OKProblems encounteredOperation
Check the electrical power supply to the Body Computer Node is correctMove on to Step 7Fault in positive electrical supply and/or earthReplace defective component (in the case of a fuse, find out what caused it to blow)
7CHECK USING DIAGNOSTIC EQUIPMENTAll OKProblems encounteredOperation
Use an Examiner to check the possibility of connecting to the Body Computer NodeEnd of diagnosisImpossible to connect to the Body Computer control unitReplace Body Computer    Op. 5505A35 MAIN BODY COMPUTER/JUNCTION UNIT - R.R.