| | Results of the tests |
| 0 | PRELIMINARY CHECKS | All OK | Problems met | Operation |
|---|
| Turn the key to the ON position, turn the ring nut for the steering column switch unit lever activating the side lights and check that they come on.Place the steering column switch unit lever for the windscreen wipers in a position other than the intermittent one and check that the windscreen wipers are activated | Continue to Step 1 | Not even the side lights come on | Restore the correct electrical connections for the sensor See E3020 WINDSCREEN WASH/WIPE . If necessary, replace the faulty components (if a fuse is involved, search for the causes of the problem first) |
| The windscreen wipers are not activated under any circumstances | See table J02 |
| 1 | RAIN SENSOR ELECTRICAL CIRCUIT CHECK | All OK | Problems met | Operation |
|---|
| Check that the connections between the Body Computer and the rain sensor and between the steering column switch unit and the Body Computer are correct See E3020 WINDSCREEN WASH/WIPE | Continue to Step 2 | Connections faulty | Restore the correct electrical connections for the sensor See E3020 WINDSCREEN WASH/WIPE . If necessary, replace the faulty components (if a fuse is involved, search for the causes of the problem first) |
| 2 | CHECK ON STEERING COLUMN SWITCH UNIT | All OK | Problems met | Operation |
|---|
| Check that the steering column switch unit is working properly in the bi-stable position, checking the continuity and the insulation in particular | Continue to Step 3 | Steering column switch unit faulty | Replace the stalk unit Op. 5550A12 |
| 3 | REPLACING RAIN SENSOR | All OK | Problems met | Operation |
|---|
| Replace the rain/dusk sensor Op. 5050B66and check that the fault disappears | End of diagnosis | The fault persists | Repair the original rain/dusk sensor or replace the Body Computer Op. 5505A32 Search for the fault starting from another symptom' |
