If the air-conditioning compressor should fail or noises be produced on the above mentioned vehicles, a possible cause is a faulty solenoid coil on the compressor coupling. Prior to replacing the solenoid coil, check the main A/C fuse (10A), which is sometimes blown by an electrical short-circuit in the coupling. A resistance measurement is also to be made on the coupling. The nominal value is: approx. 3 - 4 Ohm. If the value is in this range, the coupling is in order and the surrounding area is to be checked. If the value is zero Ohm, a short-circuit can be assumed. The faulty solenoid coil or the compressor should be replaced. On the replacement of the solenoid coil the following is to be noted:
connection (to make the removal of the retaining fitting easier, a tool is included with the repair kit that is fitted to the head of the retaining screw to undo it)
Important safety note
Technical information and practical tips have been compiled by HELLA in order to provide professional support to vehicle workshops in their day-to-day work. The information provided on this website is intended for use by suitably qualified personnel only.
Reprinting, distribution, reproduction, exploitation in any form or 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, pictures and descriptions serve only for the purposes of explanation and representation of the instructions and cannot be used as a basis for installation or assembly work. All rights reserved.
Not helpful at all
Very helpful