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Q: under hood and above brake petal on 2004 Honda Civic

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ive done a multitude of tests and replaced the compressor on my 2004 Honda civic lx. I have narrowed it down to the relay switch not getting power at the 30 pin (compressor relay under hood). I have a 2003 civic lx (AC Works) and compared all of the tests with the 04 and #30 isn't getting power. I don't know the exact verbiage of the numbers but that is the number on the relay. on the #30 with keys out of the car, it shows zero volts, but when I start the car and call for AC, 12 volts show up on #30. This doesn't happen on my 04. #30 feeds the compressor and since it is dead, the compressor never kicks on. Can you tell me what else to troubleshoot. I am a novice and pretty pleased I got to this point. Thank you
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Hello! I appreciate you're trying hard to figure out what's going on with your air conditioning. You concern likely lies in a concern within the clutch or coil of the air conditioning compressor. OR --
if the air conditioning system is out of refrigerant due to some kind of leak, it won't allow the compressor to kick on either. Honda's don't usually have "odd" issues -- sticking with the basics, if you have power to the compressor and it doesn't engage, the compressor clutch / coil is likely the culprit...or more likely, a lack of refrigerant in the system. I'd totally suggest confirming your findings with a local trained tech near you, here are some suggestions...and good luck! http://repairpal.com/honda-within-10-miles-of-pickerington-ohio-43147
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