Volkswagen Sharan - Air-conditioning system is not functioning | HELLA
Volkswagen
Sharan
Model year: 1998–2001
Engine: AFN
With Climatronic
Air-conditioning system is not functioning
No error code recorded
If the air conditioning on one of the above vehicles fails, you should first check the fuses and the magnetic clutch. If they are OK you can then check the high and low pressures. If your measurements show that the high-pressure side and the low-pressure side are at the same pressure (around 6bar), this indicates a fault (e.g. contamination, see picture) in the regulating valve integrated into the wobble plate of the compressor.
When the air conditioning is switched on, the pressure on the high-pressure side should be between 8 and 15bar, and on the low-pressure side around 2bar.
Resolution:
The manufacturer makes no provision for a repair, in other words the compressor should be replaced. Before doing this you must flush out the entire air conditioning system and replace the refrigerant dryer and expansion valve.
Important safety notice
The following technical information and tips for practical use have been set up by HELLA in order to offer professional support to automotive workshops in their daily work. The information available here on this website is only to be used by appropriately trained specialist staff.
The reprinting, distribution, reproduction, exploitation in any form and disclosure of the contents of this document, even in part, is prohibited without our express written approval and indication of the source. The schematic illustrations, figures and descriptions are for explanation and presentation of the document text and cannot be used as a basis for installation or design. All rights reserved.
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