| | Results of the tests |
| 0 | PRELIMINARY CHECKS | All OK | Problems met | Operation |
|---|
| Check that all the windscreen wash/wipe steering column switch unit functions are working | End of diagnosis | Only the windscreen wipers are not working | Continue according to the instructions inSee table See table J02 WINDSCREEN WIPERS NOT WORKING |
| The windscreen washer is not working | Continue according to the instructions inSee table See table J03 SCREEN WASHER NOT WORKING |
| Nothing is working | Continue to Step 1 |
| 1 | STEERING COLUMN SWITCH UNIT RELAY CHECK (POWER CIRCUIT) | All OK | Problems met | Operation |
|---|
| With the ignition ON, check that the additional current socket in the dashboard is working properly. The socket is located on the tunnel, opposite the centre rear seat.It is possible, for example, to insert the cigar lighter and check that it heats up | Continue to Step 5 | The additional current socket in the dashboard is also not working | Continue to Step 2 |
| 2 | STEERING COLUMN SWITCH UNIT RELAY CHECK (POWER CIRCUIT) | All OK | Problems met | Operation |
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| Swap the steering column switch unit relay (in the junction unit under the dashboard) with the heated rear windscreen relay (they are next to one another) and check that the windscreen wipers and the rearscreen wiper are working properly after the swap | Continue to Step 3 | The two devices are still not working even after the swap | Continue to Step 4 |
| 3 | REPLACING HEATED REAR WINDSCREEN RELAY (POWER CIRCUIT) | All OK | Problems met | Operation |
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| Replace the heated rear windscreen relay (which, in reality, was the one for the steering column switch unit) and check that the heated rear windscreen is working properly | End of diagnosis | . | |
| 4 | STEERING COLUMN SWITCH UNIT RELAY POWER SUPPLY CHECK (POWER CIRCUIT) | All OK | Problems met | Operation |
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| Refit the two relays in their original positions.With the ignition ON, check that the steering column switch unit relay is correctly supplied by the battery.Also check that the electrical connections between the battery and the relay are not faulty See See E3020 WINDSCREEN WASH/WIPE | Do not connect the relay |
| Continue to Step 5 | No supply from battery | Restore the correct supply to the relay. If necessary replace the faulty components (if a fuse is involved, search for the cause of the problem) |
| Connections faulty | Restore the correct connections. See See E3020 WINDSCREEN WASH/WIPE |
| 5 | CHECK WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
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| Connect the diagnostic equipment (Examiner Plus or Smart) to the Body Computer and check that there are no errors | Continue to Step 6 | Faults detected | Continue according to the instructions for the diagnostic equipment |
| 6 | CHECK ON STEERING COLUMN SWITCH UNIT | All OK | Problems met | Operation |
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| Check that the steering column switch unit is correctly supplied both by the battery and by the Body Computer See See E3020 WINDSCREEN WASH/WIPE | Continue to Step 7 | Connections faulty | Restore correct connections. If necessary replace the faulty components (if a fuse is involved, search for the cause of the problem) |
| No power supply from the Body Computer | Replace the Body Computer Op. Op. 5505A32 BODY COMPUTER - R R |
| 7 | REPLACING STEERING COLUMN SWITCH UNIT | All OK | Problems met | Operation |
|---|
| Replace the stalk unit Op. Op. 5550A12 COMPLETE STALK UNIT - R+R FOR VERSIONS WITH AIR BAG | End of diagnosis | . | |