I need to know where is the Air conditioner relay

  • 4 CYL
  • 2WD
  • 85,000 MILES
Hi.I'm Danny.I have a 2000 Accord. The AC stop working, I checked the power to the compressor, and it's missing.I also checked the high pressure switch and it's working and it has 4.66 V. The AC light inside it's on. I need to know where is located the Ac relay, or if someone has a repair manual. What I have to do to diagnose the system.

The compressor does not engage. A friend of mine told me do not jump the compressor directly from the battery, because I can burn the compressor, some of the cars are using less than 12v for the compressor. He said.

Thanks in advance
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have the same problem?
Friday, August 28th, 2009 AT 9:27 PM

1 Reply

Hello Danysony,

The location for the air conditioner relay is under the hood, the diagram below will show you where.

Here is how you test the relay


If the compressor does not engage when you turn on the A/C, see if it will run by jumping the compressor clutch wire directly to the battery (use a fused jumper wire). If the compressor works when you jump it, and the A/C blows cold air, the system contains refrigerant and the fault is likely a bad A/C compressor clutch relay or a bad clutch cycling switch or pressure switch.

If the compressor does not engage when you jump it, the problem is a bad compressor clutch.

If the clutch engages but the compressor does not turn (the belt will start to slip and squeal), the compressor is locked up and you need a new compressor.

Here is how you replace a compressor


If the compressor clutch engages and turns the compressor, but the A/C still does not blow cold air, the system is probably low on refrigerant and needs to be recharged. If you Have an A/C gauge set, hook it up and see if the system has any pressure.


If it is out of refrigerant or is low, check for leaks, then have the A/C system vacuum purged to remove air. After the air is out, it can be recharged with the specified amount of refrigerant. It is important to get any air out as this will reduce cooling efficiency and may make the compressor noisy.

Here is how you check for leaks


Please let us know happens so it will help others.

Best, Ken
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Friday, December 2nd, 2016 AT 4:28 PM

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