| 0 | PRELIMINARY CHECKS | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
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| With the panel off, check that the pin is correctly fastened to the arm carrier by lifting the wiper blades up. | Move on to Step 1 | The arm is not correctly secured (nut defective or not correctly tightened). | Replace and/or tighten the nut to torque. |
| 1 | REARSCREEN WIPER FUSE CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
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| Check the condition of the rearscreen wiper fuse | Move on to Step 2 | The rearscreen wiper fuse is broken. | Replace the rearscreen wiper fuse (and find out what could have caused it to blow). |
| 2 | VEHICLE WIRING CONNECTIONS CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
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| Following the procedure, Op. 7015A04 TAILGATE INTERIOR PANEL - R+Rremove the protective panel on the rear tailgate and check the condition of the vehicle wiring connector and make sure it is correctly fitted in the rearscreen wiper socket. | Move on to Step 3 | 1.Connector damaged. | 1. Replace the connector. |
| 2.Connector not correctly inserted. | 2. Restore correct connection. |
| 3 | CHECK ON TENSION AT WIRING TERMINALS | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
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| Disconnect the connector from the rearscreen wiper and access the panel and select the various functions using the steering column switch unit checking the voltage at the wiring termiansl (correct voltage is the battery voltage 13.5 V). | Move on to Step 4 | 1. The voltage measured is not correct (the wiring is broken) | 1. Restore the correct connections or replace the steering column switch unit. |
| 2. The voltage measured is the same as that of the battery (rearscreen wiper defective) | 2. Move on to Step 5. |
| 3. Stalk unit not working properly. | 3. Move on to Step 7. |
| 4 | REARSCREEN WIPER MOTOR POWER SUPPLY CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
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| Check the following, in order:- motor earth connection;
- motor connection with steering column switch unit
See E3021 REAR WINDOW WASH/WIPE | Move on to Step 5 | Electrical connection interrupted. | Repair the connections See E3021 REAR WINDOW WASH/WIPE |
| 5 | REARSCREEN WIPER MOTOR CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
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| Check that the rearscreen wiper motor is working properly. | Move on to Step 6 | Rearscreen wiper motor faulty. | Replace the rearscreen wiper motor Op. 5050C42 REAR WIPER MOTOR - R+R |
| 6 | SCREEN WIPER CONTROL UNIT CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
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| Check that the electronic control device is working properly and, in particular, that the pins are not oxidized or distorted. | Move on to Step 7 | Screen wiper control unit faulty. | Replace the screen wiper control unit |
| 7 | CHECK ON STEERING COLUMN SWITCH UNIT CORRECT OPERATION | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
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| Check that the stalk unit is working properly: in particular the rearscreen wiper switch See descriptions 5550 WARNING AND MANOEUVRING INDICATORS | End of diagnosis | Stalk unit not working properly. | Replace the steering column switch unit Op. 5550A10 STALK UNIT ASSEMBLY - R+R |
