3360235 - I15 (SIDE) BRAKE LIGHTS NOT WORKING

Brake lights do not work The third brake light works normally
The RH and LH brake lights are controlled directly from the Body Computer Node on the basis of information from the Brake Light switch.
Results of the tests
1CHECK WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation

Connect and Examiner to the tester input and check the Body Computer Node for:

  • faults in the Brake Lights
  • Brake Light operation by means of active diagnosis
  • plausibility of Brake Light On/Off parameter
Continue to Step 6Presence of error in Brake Light bulbsContinue as suggested by the tester
Lights do not come on during active diagnosis Continue to Step 3
The Brake Light on/off parameter does not change Continue to Step 2
2CHECKING FACIA CONTROL UNITAll OKProblems metOperation
Remove the facia control unit, separate it from the Body Computer Node and check internal continuity of the Brake Light switch positive control input to the Body Computer Node Continue to Step 6Facia control unit interior switch Change the facia control unit Op. 5505A10
3CHECKING ELECTRICAL EQUIPMENTAll OKProblems metOperation
Check continuity/insulation between Body Computer Node and tail-lights See   E2021  BRAKE LIGHTS Continue to Step 4Wiring faulty Renew the electrical connections See   E2021  BRAKE LIGHTS
4CHECKING BRAKE LIGHTSAll OKProblems metOperation
Check light efficiencyContinue to Step 5Brake light faultsChange brake lights
5CHECK TAIL-LIGHTSAll OKProblems metOperation
Check condition of the tail-lightsContinue to Step 6Fault in tail-lightsRestore operation and change lights if necessary
6CHECK CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer present Fault persistsReplace the Body Computer Op. 5505A32Search for the fault starting from another symptom'