312000780 - S051 CLIMATE CONTROL SYSTEM NOISY / (IN PASSENGER COMPARTMENT)

Whilst driving, a noise comes from the fan. This diagnosis can only be made after the.    See table S015 NOISE WHILST DRIVINGCarry out the latter first.
The climate control is working normally but there is excessive noise coming from the passenger compartment fan.
Test results
0PRELIMINARY CHECKSAll OKProblems encounteredOperation
Having carried out the road test, during the    See table S015 NOISE WHILST DRIVING, there was a noise from the front identified as coming from the passenger compartment heater fan.Move on to Step 1
1FAN CHECKAll OKProblems encounteredOperation
Check the climate control fan.

In particular, check:

  • that the fan and spiral is clean, if there are any foreign bodies, deposits of dust on the vanes and/or leaves remove them/blow through moving the fan from the engine support;
  • that there are no breaks or cracks in the fan;
  • there are no vibrations or noise at low speed (check the operation with the fan detached from the assembly but the electrical connection fitted).
"The operation for determining vibrations should be carried out with great care to avoid fragments of the fan being expelled into the surrounding area. Protective goggles must also be worn".
Move on to Step 21. Fan dirty.2. Presence of breaks/cracks in the fan.3. Electric motor noisy, fan not balanced or blades.1. Clean the fan casing and all the ducts.2. Replace the fan    Op. 5040C30 AIR CONDITIONING FAN - R.R. 3. Replace the fan    Op. 5040C30 AIR CONDITIONING FAN - R.R.
2AIR DUCT CHECKAll OKProblems encounteredOperation
Check for foreign bodies and damaged components inside the air ducts.Move on to Step 3Presence of foreign bodies or damaged components inside the air ducts.Eliminate the obstructions from the dashboard ducts.
3AIR VENT CHECKAll OKProblems encounteredOperation
Check that the vents are intact and that there are no foreign bodies that could create noise.Move on to Step 4Vents obstructed.Restore the operation of the vents.
4POLLEN FILTER CHECKAll OKProblems encounteredOperation
Check that the pollen filter is not blocked and that the recirculation air intake is not blocked with foreign bodies or parts (e.g. wiring) that are not correctly fitted.Move on to Step 51. Filter obstructed.2. Air intake blocked by foreign bodies.1. Replace the filter element    Op. 5010B08 CLIMATE CONTROL OUTSIDE AIR PURIFYING (POLLEN) FILTER - R.R. 2. Eliminate the obstructions and restore correct operation.
5FAN INTAKE CHECKAll OKProblems encounteredOperation
Check that the fan intake in the air intake chamber is not blocked by the presence of foreign bodies.End of diagnosisPresence of foreign bodies in the air intake chamber.Eliminate the obstructions and restore correct operation.