2888387 - J20 REARSCREEN AND DOOR MIRROR DEFROSTING NOT WORKING

With the ignition key in the ON position, when the button in the control panel in the centre of the dashboard is pressed, neither the heated rear windscreen nor the rear view mirrors warm up properly.
Results of the tests
1DEMISTING ELECTRICAL CIRCUIT CHECKAll OKProblems metOperation

Check, in order:

  • heated rear windscreen fuse
  • heated rear windscreen relay
  • connection between heated rear windscreen relay and control panel
  • control panel power supply
( See   E3030  HEATED REAR WINDSCREEN AND DOOR MIRROR DEFROSTING ).		Continue to Step 2Connections not correctRestore the connections
Component defectiveReplace the component involved (if a fuse is involved, search for the cause of the problem)
2HEATED REAR WINDSCREEN SWITCH CHECKAll OKProblems metOperation
Check the operation of the heated rear windscreen switch in the control panel in the centre of the dashboard See   E3030  HEATED REAR WINDSCREEN AND DOOR MIRROR DEFROSTING
The actual switch is inside an electronic control device which manages the operating logic of the demisting function.
Continue to Step 3Heated rear windscreen switch faultyRenew the heated rear windscreen switch or replace the control panel Op.   7065C10 
3CHECKING CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisFault persistsSearch for the fault starting from another symptom'