312000596 - J002 WINDSCREEN WIPERS NOT WORKING

With the ignition ON, when the lever on the right of the steering wheel is operated, the windscreen wipers do not work properly
Test results
0PRELIMINARY CHECKSAll OKProblems encounteredOperation
With the panel off, lift up the wiper blades and check that the pins are correctly fastened to the arm holders.Move on to Step 1The arms are not correctly fastened (nut defective or not correctly tightened).Replace and/or tighten the retaining nut to torque.
1WINDSCREEN WIPER FUSE CHECKAll OKProblems encounteredOperation
Check the condition of the windscreen wiper fuseMove on to Step 2The fuse is blownReplace the fuse (and find out what could have caused it to blow)
2VEHICLE WIRING CONNECTIONS CHECKAll OKProblems encounteredOperation
Following the    Op. 5050B34 WINDSCREEN WIPER ARM/S COMPLETE WITH BLADE - R+R remove the wiper arms and trim and check the condition of the vehicle wiring connector and make sure it is correctly inserted in the windscreen wiper socketMove on to Step 31.Connector damaged.2.Connector not correctly inserted.1. Replace the connector.2. Restore correct connection.
3VOLTAGE AT WIRING TERMINALS CHECKAll OKProblems encounteredOperation
Disconnect the connector from the windscreen wiper, switch on the panel and select the various functions using the steering column switch unit, checking the voltage at the wiring terminals (correct voltage at battery terminals 13.5 V).End of diagnosis1. The voltage measured is not correct (the wiring is broken or the steering column switch unit is not working properly).2. The voltage measured is the same as that of the battery (windscreen wiper defective)1. Restore the correct connections and/or replace the steering column switch unit.    Op. 5550A10 STALK UNIT ASSEMBLY - R+R 2. Move on to Step 4.
4WINDSCREEN WIPER MOTOR POWER SUPPLY CHECKAll OKProblems encounteredOperation
Check the following, in order:- Motor connection to earth;- Motor power supply line    See E3020 WINDSCREEN WASH/WIPE Move on to Step 5Connection brokenRestore the correct connections
5WINDSCREEN WIPER MOTOR CHECKAll OKProblems encounteredOperation
Check that the windscreen wiper motor is working properly and, in particular, check the internal electronic device.End of diagnosis1. Motor intermittent electronic device faulty.2. Windscreen wiper motor faulty1.Replace the windscreen wiper motor    Op. 5050B42 WINDSCREEN WIPER MOTOR - R+R 2.Replace the windscreen wiper motor    Op. 5050B42 WINDSCREEN WIPER MOTOR - R+R