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2002 civic EX A/C troubleshooting

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Old 06-14-2011, 10:02 AM   #1
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Default 2002 civic EX A/C troubleshooting

2002 civic ex,automatic.1.7L vtec. 4 door.
A/C blow air but no cold.got a bottle at walmart and charged the ac,still no cold air.inside car a/c button/switch turns on.engine and a/c fans run ok.compressor clutch does not turns.tested clutch relay and is good. tested No2 on relay fuse box socket terminal and it has voltage.jump wire number 1 and 2 and clutch does click...any idea?
one thing got me thinking and is that i charged the a/c to 45psi and next day it was 35psi.i don not see any leak on the system.is it easy to see any leak bu just looking?unless i need to remove the compressor to look for leak?.....thanks for any help
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Old 06-14-2011, 01:05 PM   #2
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Default Re: 2002 civic EX A/C troubleshooting

If you suspect a leak, take it to a shop and have them check it.

Does the clutch on the compressor engage, or does it only click?
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Old 06-14-2011, 06:06 PM   #3
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Default Re: 2002 civic EX A/C troubleshooting

Connect the No. 1 and No. 2 terminals of the compressor clutch relay 4P socket with a jumper wire.

COMPRESSOR CLUTCH RELAY 4P SOCKET



Does the compressor clutch click ?

YES - Go to step 6.

NO - Go to step 14.

Disconnect the jumper wire.
Turn the ignition switch ON (II).
Measure the voltage between the No. 3 terminal of the compressor clutch relay 4P socket and body ground.
COMPRESSOR CLUTCH RELAY 4P SOCKET



Is there battery voltage?

YES - Go to step 9.

NO - Repair open in the wire between the No. 14 fuse in the under-dash fuse/relay box and the compressor clutch relay.

thanks" IT wasn't me" for answering..

"This is what i did...and the compressor did click..did not engage at all...this test is done with car engine off"
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Old 06-14-2011, 07:24 PM   #4
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Default Re: 2002 civic EX A/C troubleshooting

How would you know if the clutch actually engaged unless the engine was running?
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Old 06-15-2011, 11:33 AM   #5
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Default Re: 2002 civic EX A/C troubleshooting

tanks....
I just following the manual,it show that to test the compressor the terminal 1 and 2 jump is with car off .
however i think your point make sense.i am going to jump terminal 1 an 2 and see what may be.
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Old 06-15-2011, 09:02 PM   #6
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Default Re: 2002 civic EX A/C troubleshooting

So if you test terminals 1 and 2 and the clutch does NOT click or engage with the car on what would the fuse box be the problem?
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Old 06-16-2011, 05:03 PM   #7
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Default Re: 2002 civic EX A/C troubleshooting

Quote:
Originally Posted by silron View Post
tanks....
I just following the manual,it show that to test the compressor the terminal 1 and 2 jump is with car off .
however i think your point make sense.i am going to jump terminal 1 an 2 and see what may be.

Pfft! You have a manual, and you can't figure this out?!


You should be able to sort this out on your own. Follow the procedures, rule out the possibilities, find the culprit, fix it.
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Old 06-21-2011, 01:02 PM   #8
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Default Re: 2002 civic EX A/C troubleshooting

thanks guys...i have the honda civic computer,search-able 2001-2005.3,4,5 door manual.i did all the testing ,so far can't find the problem.going to go over again and see

delsol.......testes fuse box and all good
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