|  |  | Results of the tests | 
| 0 | PRELIMINARY CHECK | All OK | Problems met | Operation | 
|---|
|  | Check
that the electrical connector on the two-way pump for windscreen
and rear window washer and the electrical connector on the windscreen
wiper motor are properly inserted. | Continue to Step 1 | Electrical connectors
not fitted properly. | Connect the electrical connectors, making sure
they are properly fitted into their seats. | 
| 1 | FUSE CHECK | All OK | Problems met | Operation | 
|---|
|  | Check
the condition of the windscreen wiper supply fuse | Continue to Step 2 | Fuse blown | Change the windscreen wiper
motor supply fuse | 
| 2 | CHECKING RELAY | All OK | Problems met | Operation | 
|---|
|  | Check
operation of the windscreen wiper motor supply control relay | Continue to Step 3 | Relay faulty | Change the windscreen wiper
motor supply control relay | 
| 3 | CHECKING STEERING COLUMN SWITCH
UNIT | All
OK | Problems
met | Operation | 
|---|
|  | Check
the stalk unit is properly supplied See   E3020  WINDSCREEN WASH/WIPE | Continue to Step 4 | Stalk unit not properly supplied:
electrical connection between body computer Node and stalk unit broken
or not insulated. | Restore connection/insulation of electrical connection
between body computer node and stalk unit See   E3020  WINDSCREEN WASH/WIPE | 
| 4 | CHECKING CORRECT OPERATION | All OK | Problems met | Operation | 
|---|
|  | Check
that the fault is no longer present | End of diagnosis | The fault persists | Change stalk unit Op. 5550A10Search
for the fault starting from another symptom' |