3022637 - J04 BACK WINDOW WIPER NOT WORKING
With the ignition key in the ON position, when the lever on the right of the steering wheel is operated, the rearscreen wiper does not work properly, but the rearscreeen washer works| Results of the tests | ||||
| 1 | REARSCREEN WIPER MOTOR SUPPLY CHECK | All OK | Problems met | Operation |
|---|---|---|---|---|
Check, in order:
| Continue to Step 2 | Connection broken | Restore the connections: See E3021 REAR WINDOW WASH/WIPE | |
| 2 | REARSCREEN WIPER MOTOR CHECK | All OK | Problems met | Operation |
| Check that the rearscreen wiper motor is working properly | Continue to Step 3 | Motor faulty | Replace the rearscreen wiper motor Op. 5050C42 | |
| 3 | CONTROL UNIT CHECK | All OK | Problems met | Operation |
| Check that the electronic control device is working properly and, in particular, that the pins are not oxidized or distorted | Continue to Step 4 | Control unit faulty | Replace the windscreen wiper control unit Op. 5050B38 | |
| 4 | CHECKING STEERING COLUMN SWITCH UNIT | All OK | Problems met | Operation |
| Check that the steering column switch unit is working properly: in particular, the rearscreen wiper switch: Characteristic of working principle 5050 SCREEN WASHERS AND HEADLAMP WASH/WIPE | Continue to Step 5 | Steering column switch unit not working properly | Replace the steering column switch unit Op. 5550A12 | |
| 5 | CHECK ON CORRECT OPERATION | All OK | Problems met | Operation |
| Check that the fault is no longer present | Fault persists | Search for the fault starting from another symptom' | ||