2398780 - I50 INTERIOR LIGHTS NOT WORKING / UNDER NO CIRCUMSTANCES

The interior lights do not work when the relevant controls are operated.
Results of the tests
1CHECK ON INDIVIDUAL LIGHTSAll OKProblems metOperation

check

  • condition of individual bulbs
  • condition of the relevant bulb holders
  • state and operation of courtesy light switches
Continue to Step 2Courtesy light bulb faulty Change the bulb Op. 7040E80
Front courtesy light faultyRestore or replace the courtesy light Op.   7040E10 
Rear courtesy light faultyRestore or replace the courtesy light Op. 7040E16
Daylight sensor

check

  • condition of individual bulbs
  • condition of the relevant bulb holders
  • state and operation of courtesy light switches
Continue to Step 2Courtesy light bulb faulty Change the bulb Op. 7040E80
Front courtesy light faultyRestore or replace the courtesy light Op.   7040E10 
Rear courtesy light faultyRestore or replace the courtesy light Op. 7040E14
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 the correct connections See   E2510  COURTESY LIGHTS
Body Computer earth faultyRestore the 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 presentEnd of diagnosis.