125000566 - J30 WHEN IT RAINS, THE WINDSCREEN IS NOT CLEANED AUTOMATICALLY

With the ignition on, when the stalk unit lever is set to automatic, the windscreen wiper does not work when there is water on the windscreen.
Results of the tests
1WIRING CHECKAll OKProblems metOperation

Check connections between:

Continue to Step 2Wiring brokenRenew the wiring See    See E3020 WINDSCREEN WASH/WIPE
Fuse blownReplace fuse and search for the cause of the problem
Faulty earthRestore earth
2CHECK RAIN SENSORAll OKProblems metOperation
Check the operation of the rain sensorContinue to Step 3The windscreen wiper still follows the sequence as if the intermittent mode had been setReplace rain sensor Op.    Op. 5050B64 RAIN SENSOR ELECTRONIC UNIT R R
3CHECK ON WINDSCREEN WIPER MOTORAll OKProblems metOperation
Check that the windscreen wiper motor is working properly See    See E3020 WINDSCREEN WASH/WIPEContinue to Step 4Windscreen wiper motor damagedReplace the windscreen wiper motor Op.    Op. 5050B38 WINDSCREEN WIPER ASSEMBLY - R+R OR REPAIR
4CHECK WIPER CONTROL UNITAll OKProblems metOperation
Check that the wiper control unit is working properlyContinue to Step 5Windscreen wiper control unit not workingReplace the windscreen wiper motor control unit Op.    Op. 5050B38 WINDSCREEN WIPER ASSEMBLY - R+R OR REPAIR
5CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosis.