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No power to AC

Tiny
PROTEGE22
  • MEMBER
  • 1998 MAZDA PROTEGE
At first my ac compressor was not getting any power, so I check the fuse and replaced it and it started working again. The next day it stopped working again, I checked the fuse again, but its fine. Then I check the power and there is no power to the compressor, the ac fan, or to what I assume is the low pressure switch. My only guess is it the relay? If it is the relay, can the relay kill all the power to all these parts? Any help or suggestion is appreciated, thank you.
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Friday, August 5th, 2011 AT 3:05 AM

4 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the pressure switch and the AC relay
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Friday, August 5th, 2011 AT 3:07 AM
Tiny
PROTEGE22
  • MEMBER
  • 3 POSTS
I checked the power line to the pressure switch and it doesnt get any power. As for the AC relay, I dont have any similar relays, so I wasnt able to check it. Whats the easiest way to check if the relay is bad?
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Friday, August 5th, 2011 AT 3:49 AM
Tiny
PROTEGE22
  • MEMBER
  • 3 POSTS
Well I only see two relay in the fuse box, one is fuel injection, the other one is cooling fan.I check them if they were making a clicking noise and both of them were clicking. So does that mean it is not the relay?
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Friday, August 5th, 2011 AT 7:32 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
You need to make a continuity checks on the relays -coil and switch side using a multimeter DVOM-unable to do the test bring here in
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Friday, August 5th, 2011 AT 9:29 PM

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