312000239 - I059 INTERIOR LIGHTS DO NOT GO OFF / COME ON GRADUALLY

The dimming of the door open internal light does not work.
When one of the side doors is opened, the courtesy light timer comes on for 3 minutes and light activation/deactivation is gradual (dimmed). When the vehicle is unlocked after operating the remote control, the courtesy light comes on for 15 seconds, which is interrupted by the key MAR signal. If the MAR signal is present continuously when opening a door, the courtesy lights come on.
Test results
1INDIVIDUAL BULB CHECKAll OKProblems encounteredOperation
Check courtesy light switch condition and operationMove on to Step 21. Courtesy light contacts defective2. Switch incorrectly positioned1. Repair or replace the courtesy light    Op. 7040E10 FRONT COURTESY LIGHT - R+R 2. Restore the correct position for the switch
2INTERIOR LIGHTS ELECTRICAL CIRCUIT CHECKAll OKProblems encounteredOperation
Check:

  • Body Computer power supply;
  • connections between the switches on the lock and Body Computer;
  • connections between courtesy lights and Body Computer;
  • connection to courtesy light + 30;
  • courtesy light earth connection
    See E2510 COURTESY LIGHTS
Move on to Step 31. Connections not correct2. Body Computer earth defective3. Body Computer power supply defective1. Restore the correct connections    See E2510 COURTESY LIGHTS 2. Restore correct earth connection    See E2510 COURTESY LIGHTS 3. Restore correct power supply    See E2510 COURTESY LIGHTS
3CORRECT OPERATION CHECKAll OKProblems encounteredOperation
Check that the fault is no longer presentEnd of diagnosisDimmer function not workingReplace Body Computer    Op. 5505A32 BODY COMPUTER - R.R