Check the climate control system fan

In particular, ascertain:

• there are no foreign bodies inside the fan casing
• there are no vibrations at the various speeds (causing operation with the fan switched off, but the electrical connection engaged)

Move onto step 2

• Clean the fan casing and all the ducts

End of diagnosis

• Replace the fan Op. 5040C30

End of diagnosis

Using diagnostic equipmen t (Examiner or other instruments), carry out active diagnosis of the fan at the different speeds (in climate control system control unit mode)

Move onto step 3

• Replace fan Op. 5040C30

End of diagnosis

Check for the presence of foreign bodies and damaged parts inside the distributor duct assembly

Move onto step 4

• Overhaul the duct distributor assembly Op. 5040C10

End of diagnosis

Check that the air ducts inside the dashboard and the vents are intact and that there are no foreign bodies which could cause noise

Move onto step 5

• Repair the ducts and vents

End of diagnosis

Check that the fault is no longer present

Incorrect selection of diagnostic procedure

Incorrect selection of diagnostic procedure