Jaguar XF, XJ, XK - Insufficient cooling | HELLA
Jaguar
XF-Type (X250)
/ Model year: from 2010 onwards / Chassis no.: R59504 and onwardsXJ-Type (X351)
/ Model year: from 2010 onwards / Chassis no.: V00325-XK-Type
/ Model year: 2010 - 2015 / Chassis no.: B32753 – B56794Insufficient cooling from air-conditioning system
If the customer complains that the cooling power of the air-conditioning system in one of the aforementioned vehicles is insufficient, this may be due to a faulty pressure control valve in the compressor.
A faulty pressure control valve can often be identified by unusual high and low pressure: high pressure too low; low pressure too high.
However, before the electronically actuated valve is replaced, the controller, other system components and the coolant level should be checked.
To replace the compressor pressure control valve, proceed as follows:
- Drain off refrigerant
- Remove compressor (usually required)
- Clean area around control valve
- Remove circlip from valve
- Carefully remove control valve
- Check the area of the compressor into which the new valve is going to be inserted for damage and soiling
- Moisten the seal rings on the new valve with compressor oil, and insert the new control valve
- Fit circlip
- Fit compressor
- Carry out leak test
- Fill air-conditioning system and perform a functional test
The figure shows an example of an electronically actuated pressure control 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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