A/C not blowing cold air, compressor is not turning on

2003 ACURA MDX
200,000 MILES • V6 • 4WD • AUTOMATIC
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KAITLYNDVOORHEES
  • MEMBER
  • 3 POSTS
My A/C won't cool. the compressor isn't kicking on. The compressor is still good and full on Freon. I have checked all the relays and they are all good. I can't figure out what's wrong. the blower works great. the A/C just won't cool.
Aug 3, 2014 at 2:14 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,992 POSTS
Could be the pressure switch-Try to power the compressor direct and see what happens
Aug 3, 2014 at 6:43 AM
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KAITLYNDVOORHEES
  • MEMBER
  • 3 POSTS
How do I power the compressor directly?
Aug 3, 2014 at 10:31 AM
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KAITLYNDVOORHEES
  • MEMBER
  • 3 POSTS
My husband hooked the compressor straight to the battery and nothing came on.
Aug 3, 2014 at 10:45 AM
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KASEKENNY
  • ✓Experienced Mechanic
  • 18,907 POSTS
We need to confirm that the compressor will not come on. We do this by taking a jumper wire and connect it the battery and then connecting the other end to the power wire of the compressor. I attached the wiring diagram for you to see what this is. There is only one wire going to this clutch so it should be straight forward.

You could also check for voltage at the clutch to see if it has it and if so this would be the same result.

If the clutch does not come on then we need to replace the compressor as this is the cause.

Let me know what you find and we will determine next steps but I suspect the compressor is the issue.

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak
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Apr 17, 2020 at 10:33 AM
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