2398795 - J21 HEATED REAR WINDSCREEN NOT WORKING

With the ignition on, when the appropriate button in the climate control system control panel is pressed, the heated rear window does not warm up properly.
Results of the tests
0PRELIMINARY CHECKSAll OKProblems metOperation
Check that the door mirrors defrost properlyContinue to Step 1The door mirrors do not defrostSee table   J20 
1HEATED REAR WINDSCREEN ELECTRICAL CIRCUIT CHECKAll OKProblems metOperation
Check that the heated rear window is connected to earth properly See   E3030  HEATED REAR WINDSCREEN AND DOOR MIRROR DEFROSTING Check that the heated rear window is supplied properly: with the ignition ON and the defrosting button activated, the battery voltage should be at the supply cableContinue to Step 2No power supply from the battery Restore the correct power supply to the relay. If necessary, replace the faulty components (if a fuse is involved, search for the causes of the problem first)
Connections faultyRestore the correct connections. See   E3030  HEATED REAR WINDSCREEN AND DOOR MIRROR DEFROSTING
2RESISTANCE CHECKAll OKProblems metOperation
Check the continuity of the heated rear window demisting heating elementContinue to Step 3Heating element brokenReplace the rearscreen Op.   7035B14 
3CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisFault persistsSearch for the fault starting from another symptom'