Test results

Check the cleanliness of the fan and spiral

Go to Step 2

Dirty fan or spiral

Clean the fan and the spiral

Check for the presence of foreign bodies, deposits of dust on the fan vanes and/or on the spiral.

Do not spray any kind of lubricant to eliminate the noise

Go to Step 3

Foreign bodies present

Remove the foreign bodies found and restore correct operation

Check all the components of the passenger compartment near the climate control system that may cause noise/vibration such as ducts, air distribution vents, which might be clogged, and the instrument panel

End of diagnosis

Noisy component found

Eliminate the noise securing or replacing the faulty component