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ACC II Pin out compressor power which one?
Posted by Shane (more from Shane) on Sat, 24 Jun 2006 14:35:19
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Hi,
I posted an earlier message, and thought I should clarify myself. I am looking for the pin number on the back of the ACC unit which outputs power when the airconditioning turns on? ie sends the signal to turn the compressor on. I have a 1993 2.3 CSE. The A/C system is the ACC II, and the Saab part number is 4071742.
I just want to connect a meter up with the system in either Econ or Off mode, then turn the Auto on at a low temp to make it send the signal to the compressor, but I want to check it's actually doing this. Pin number from anyone would be great... My problem is that the compressor is fine, works if directy fed power, the idle changes when the compressor should be running and all the fans, etc. change, but the compressor doesnt come on. I have checked the relays and they're all fine, so I am trying to work back from the ACC unit itself, but cannot until I know the pin which should output 12v only when the compressor is needed.
Thank You
Shane
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