Electrical Post your questions about electrical issues here!

Howdy! A/C Clutch not engaging [Partially Solved]

Old Feb 27, 2021
  #1  
ernest64xp's Avatar
Thread Starter
Registered!!
 
Joined: Feb 2019
Posts: 19
Likes: 1
Rep Power: 0
ernest64xp is an unknown quantity at this point
Question Howdy! A/C Clutch not engaging [Partially Solved]

Hey Guys, hope you're all doing great!

So i have this situation with my 2004 Honda Civic EX, it was having overheating issues related to a bad/cracked radiator so I went ahead and took my vehicle to a repairshop near my house, they changed the radiator and fixed the overheating issue, However, another issue just showed up, my A/C unit is not engaging at all. I was there while the repair man was doing his thing, although when he was removing the old radiator he missed to disconnect a terminal (Picture below) with 3 Red wires on one side, and a Red/Blue, Red/White, and Blue/White cable attach to it but since he was careless the pins were ripped from the terminal. He then proceded to remount the Pins on the terminal, but mot likely didn't set them in the right order. When he placed the new radiator we noticed that none of the fan were actually working, so we took another look at the cables he disconnected and he changed their possition and fans started working again, Yay!!! But... The A/C Stopped working like, at all. I researched online (https://www.civicforums.com/forums/3...essor-cut.html) and found the right order using an Ohm Meter, the 3-5 Ohms is the one that goes on the Red/Blue Cable which we call The Clutch Cable, and the other two were for the thermal protectors and it didnt matter the order they were connected as long as the Clutch Cable its connected on the right side.

As so we tried, but there is no engage at all. We still tried with the Bridge on the Relay to the Negative Terminal and it does engage the AC to power on (Meaning its working and it has freon), however we don't really know how to, and why ground is not going were it needs to be to engage.



Can someone help me out here, I really don't know what else to troubleshoot.

Last edited by ernest64xp; Mar 1, 2021 at 02:55 PM. Reason: [SOLVED], Well Kind of..
Reply
Old Mar 1, 2021
  #2  
BrotatoChip's Avatar
Super Moderator
 
Joined: Jun 2012
Posts: 5,073
Likes: 2,096
From: Ohio
Rep Power: 224
BrotatoChip has much to be proud ofBrotatoChip has much to be proud ofBrotatoChip has much to be proud ofBrotatoChip has much to be proud ofBrotatoChip has much to be proud ofBrotatoChip has much to be proud ofBrotatoChip has much to be proud ofBrotatoChip has much to be proud ofBrotatoChip has much to be proud ofBrotatoChip has much to be proud ofBrotatoChip has much to be proud of
Re: Howdy! A/C Clutch not engaging

If the repair shop broke the A/C then why are you troubleshooting? Shouldn't they be fixing it for free?

Originally Posted by ernest64xp
We still tried with the Bridge on the Relay to the Negative Terminal and it does engage the AC to power on (Meaning its working and it has freon)
Not quite. If you jumped the compressor relay you bypassed the pressure sensor. Hook a set of manifold gauges up to verify it's not low/empty. You can also check for continuity through the pressure sensor (located on top of the drier, next to the radiator on the driver side). If the pressure is above 28 psi you should have continuity through it.
Reply
Old Mar 1, 2021
  #3  
ernest64xp's Avatar
Thread Starter
Registered!!
 
Joined: Feb 2019
Posts: 19
Likes: 1
Rep Power: 0
ernest64xp is an unknown quantity at this point
Red face Re: Howdy! A/C Clutch not engaging

Originally Posted by BrotatoChip
If the repair shop broke the A/C then why are you troubleshooting? Shouldn't they be fixing it for free?



Not quite. If you jumped the compressor relay you bypassed the pressure sensor. Hook a set of manifold gauges up to verify it's not low/empty. You can also check for continuity through the pressure sensor (located on top of the drier, next to the radiator on the driver side). If the pressure is above 28 psi you should have continuity through it.

Thank you very much for all of your help, it seems that the repairman found the culprit of the issue, which apparently was the AC Activator button (The one with the green light below the head unit) It seems that we have to replace the whole button set as it cannot be repaired just on one button, also, what could cause that the signal for the AC is sent went it says its off but as soon as you turn press the AC to On, stops sending the signal? Anyways... As a temporary fix we disabled the Window defogger and replaced that button so the AC can turn on using the Window Defogger button, sure i have to manually turn the AC On every time I turn my car on, but at least its working...
Reply
Related Topics
Thread
Thread Starter
Honda Civic Forum
Replies
Last Post
AangAirbender
Electrical
3
Mar 22, 2020 01:04 PM
ob.sebastien
Air Conditioning
3
Sep 28, 2018 08:00 PM
kaipederson
Mechanical Problems/Vehicle Issues and Fix-it Forum
9
Jun 6, 2014 08:21 PM
johndeerebones
Mechanical Problems/Vehicle Issues and Fix-it Forum
21
Sep 8, 2012 10:31 PM
speedy25
Mechanical Problems/Vehicle Issues and Fix-it Forum
17
Jul 31, 2012 09:37 PM


Thread Tools
Search this Thread

All times are GMT -5. The time now is 02:43 PM.