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ac concern

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I need some help with an ac concern on a boxster! The system is charged and comp. works. I put 12v to it and it engages. When I test the relay I get no power to the green/yellow wire. There is also no input from the green/wht wire that comes from the mfi-di control unit. Ac works great if I jump the green/yellow wire.Just looking for a little help. Thanks

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Any work done on the inside temp sensor?

It can stop the AC from coming on.

You might need a PST2 or PIWIS tester to diagnose further.

Thanks Loren, by the way this is Dave Honeycutt I owned the MARS recondition service that did some work on your cars. I sold the buisness and now run another buisness out of our home. Thanks for the info.

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Give me a call if you want to put a PST2 on the car and see what it comes up with.

Thanks, I think I have it pin pointed to the ground control side of the relay. It is the Wht/grn wire that comes from the mfi-di control unit. Can I only see what is going on with that unit with the PST2. I will have to get you contact # you can email me dirctly at monaviebug@gmail.com Thanks again, good to hear from you.

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