|  |  | Results of the tests | 
| 1 | POLLEN FILTER CHECK | All OK | Problems met | Operation | 
|---|
|  | Check
the condition of the pollen filter |  | It should be rememebered that
the pollen filter should be replaced regularly, at least once a
year. | 
 | Continue to Step 2 | Filter obstructed | Replace the pollen filter  Op.   5010B09 | 
| 2 | CHECKING THE AIR DUCTS | All OK | Problems met | Operation | 
|---|
|  | Check
that the air ducts inside the dashboard and the vents are intact
and there are no obstructions | Continue to Step 3 | Ducts obstructed or damaged | Restore the operation of
the ducts and the vents (see Assembly 5010B) | 
| 3 | CHECKING CORRECT OPERATION | All OK | Problems met | Operation | 
|---|
|  | Check
that the fault is no longer present | End of diagnosis | Fault persists | Search for the
fault starting from another symptom' |