198001778 - I057 INTERIOR LIGHTS NOT WORKING WITH DOORS UNLOCKED BY REMOTE CONTROL

The timed interior lights work if they are switched on manually and when the doors are opened, but the timer does not activate when using the remote control (the doors lock/unlock normally)
When one of the side doors is opened, the timed courtesy light comes on for 3 minutes. When the vehicle is unlocked after operating the remote control, the courtesy light comes on for 15 seconds, which is interrupted by the key on signal.If the key ON signal is present continuously when opening a door, the courtesy lights come on.
Test results
1COURTESY LIGHTS CHECKAll OKProblems encounteredOperation
Check the condition and operation of the switches on the courtesy lightsMove on to Step 2Courtesy light bulb faultReplace the bulb
Front courtesy light faultRepair or replace the courtesy light. Op.  
Rear courtesy light faultyRepair or replace the courtesy light Op.  
2INTERIOR LIGHTS ELECTRICAL CIRCUIT CHECKAll OKProblems encounteredOperation

Check the following, in order:

  • connections between courtesy lights and Body Computer;
  • connection to courtesy light + 30;
  • courtesy light earth connection
    See E2510 COURTESY LIGHTS 		Move on to Step 3Connections not correctRepair the connections    See E2510 COURTESY LIGHTS
Earth on courtesy lights defectiveRestore the correct earth connection    See E2510 COURTESY LIGHTS
3CHECK USING DIAGNOSTIC EQUIPMENTAll OKProblems encounteredOperation
Connect the diagnostic test equipment (Examiner or other instruments) to the tester input.Check that there are no errors at the Body Computer (e.g. remote control receiver not recognized)Move on to Step 4Errors present in the Body ComputerRestore correct operation. If necessary, replace the Body Computer    Op. 5505A35 MAIN BODY COMPUTER/JUNCTION UNIT - R.R.
4CORRECT OPERATION CHECKAll OKProblems encounteredOperation
Check that the fault is no longer presentEnd of diagnosis.