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Reged: 10/09/2010
Posts: 282
Loc: Costa del Poole
Re: Aircon- compressor clutch not being activated [re: Georg A.]
      15/09/2014 13:14

I checked the relay plate.

Pin 31 is ground. No problem there.

Pin 30 is the signal from the low pressure switch. Currently, 0v, due no system pressure.
I've bridged the switch to give a hi signal, 30v. This is also connected to the Ac control head.
Pin 87 is the output to the compressor clutch.
Pin 87a is going to the Motronic(kick down?) (idle control?)
Pin T is getting nothing



85 WR quattro
90 V8 Silver, 91 V8 Black, 93 V8 Lago
93 100e quattro V6. Titan, i think

Edited by Mark Hanman (15/09/2014 13:18)

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Entire thread
Subject Posted by Posted on
* Aircon- compressor clutch not being activated Mark Hanman 14/09/2014 10:47
. * Re: Aircon- compressor clutch not being activated Tim A.   14/09/2014 11:45
. * Re: Aircon- compressor clutch not being activated Mark Hanman   14/09/2014 12:32
. * Re: Aircon- compressor clutch not being activated Tim A.   14/09/2014 13:00
. * Re: Aircon- compressor clutch not being activated Mark Hanman   14/09/2014 13:13
. * Re: Aircon- compressor clutch not being activated Georg A.   14/09/2014 13:28
. * Re: Aircon- compressor clutch not being activated Mark Hanman   14/09/2014 13:34
. * Re: Aircon- compressor clutch not being activated Georg A.   14/09/2014 17:48
. * Re: Aircon- compressor clutch not being activated Mark Hanman   14/09/2014 17:58
. * Re: Aircon- compressor clutch not being activated Georg A.   14/09/2014 20:20
. * Re: Aircon- compressor clutch not being activated Mark Hanman   15/09/2014 13:14
. * Re: Aircon- compressor clutch not being activated Georg A.   15/09/2014 13:51
. * Re: Aircon- compressor clutch not being activated Mark Hanman   15/09/2014 15:26
. * Re: Aircon- compressor clutch not being activated Jackie Smith   04/06/2015 04:49
. * Re: Aircon- compressor clutch not being activated Mark Hanman   04/06/2015 10:17
. * Re: Aircon- compressor clutch not being activated Roy F   04/06/2015 11:39
. * Re: Aircon- compressor clutch not being activated Mark Hanman   09/06/2016 23:07
. * Re: Aircon- compressor clutch not being activated Mark Hanman   06/08/2016 16:18
. * Re: Aircon- compressor clutch not being activated Mark Hanman   15/09/2017 11:02

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