3022626 - I50 INTERIOR LIGHTS NOT WORKING / UNDER NO CIRCUMSTANCES

The interior lights do not work when the relevant controls are operated (including the boot light).
Results of the tests
1CHECKING INDIVIDUAL LIGHTSAll OKProblems metOperation

Verify:

  • condition of individual bulbs
  • condition of the relevant bulb holders
  • condition and operation of courtesy light switches.
Continue to Step 2Faulty bulb or front courtesy light Restore or replace the courtesy light Op.   7040E40 
Faulty bulb or rear courtesy light.Restore or replace the courtesy light Op.   7040E16 
Faulty boot bulb or bulb holderRestore or replace the bulb holder Op.   7040G30 
2CHECK ON INTERIOR LIGHTING ELECTRICAL CIRCUITAll OKProblems metOperation

Check, in order:

  • Body Computer supply;
  • connections between courtesy lights and Body Computer;
  • connection to +30 courtesy lights;
  • courtesy light earth connection: See   E2510  COURTESY LIGHTS ,
Continue to Step 3Connections not correctRestore correct connections See   E2510  COURTESY LIGHTS
Body Computer earth faultyRestore earth connection: See   E2510  COURTESY LIGHTS
Faulty Body Computer supplyRestore connection: See   E2510  COURTESY LIGHTS
3CHECK ON SIGNALAll OKProblems metOperation
Check that when one of the side doors is opened, an earth signal is sent from the Body Computer to the courtesy lightContinue to Step 4No earth signal from Body ComputerRestore the correct supply to the Body Computer. If necessary, replace the Body Computer Op.   5505A32 
4CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentFault persistsSearch for the fault starting from another symptom'