You saved my ass! I was pulling my hair out trying to figure the issue out with just the wiring diagram, but it obviously does not tell you the testing as you did. Props to you and thank you very much for taking your time and effort to make this video to help fellow mechanics!
Bro you are the man. Ive been on a civic for 2 wks looking for info this exact diagnosis. No clutch no fans. I grounded the the wire like you showed abd bingo we had lift off. Fans and compressor. Thanks 100 sr. You really broke down the diagnosis. Thks again
Awesome man, thank you! My car is doing exactly the same thing. I have a 2008 honda civic ex-l and I tested my fans and by themselves they both work. When I probe the wires going to the ac compressor up by the alternator and add a ground the ac compressor comes on and the fans. I checked the fuses (all of them) and checked the relays and I had a bad one and replaced it but it's doing exactly what the car in the video was doing. I'm looking now to get a new ac head unit. That's the last thing for me to check and that has to be it. This video gives me confidence that that's my problem with my car. I really appreciate the video!!
Bro!! I have the same exact problem with a 2010 manual civic.. which also was in an accident by the way.. i changed the pressure switch, checked thermal protector, relays, ac compressor, fans and what not.. Thanks for your video, im getting on it to check the switch. Hopefully thats my problem also.. Keep up with this type of videos!
Thank you for sharing your knowledge and experience. I see several posted about this generation of Honda Civic no compressor clutch because of failed control panels or failed clutch relay or low or high levels of refrigerant that have to be sorted. My 2007 Honda Civic LX had intermittent clutch operation. I began with bypass of the a/c clutch relay using a jumper wire to add a pound of refrigerant and validate refrigerant levels are normal. I began looking at the Honda triple function a/c pressure sensor but so far not found a video that shows volt ohm meter validations for the Honda triple function a/c pressure sensor yet. I swapped the a/c clutch relay and drove around some and appears the relay swap solved my vehicle problem but I am not done yet because I have not seen the compressor fan come on yet so I may have moved my problem from the clutch relay to the fan so I need to do more. I would love to see a future video that explains how to validate and test the Honda triple function a/c pressure sensor because the videos I found so far are unclear how the Honda triple function a/c pressure sensor works and how to validate it has good outputs for high and low and normal refrigerant levels. Again thanks I am impressed with your understanding of this system and how to troubleshoot and thanks for you taking your time to help other people.
The failure is internal... A patch job would essentially be the old-school straight wiring😂😂. Basically emulate the signal required. The video tells what's needed to achieve this. Goodluck
Man you're the best. I have 2006 honda civic ex coupe 5 speed. I have the same problem. I checked the climate control unit and your 100% right I followed you're instructions and I troubleshoot the problem. My ac climate control switch is bad. Thanks for the video... 👍
Well done troubleshooting and diagnosis did you find any test procedures for the manual climate control I have the opposite problem fans come on high when key on and compressor stays engaged .when engine is running .turning off the ac switch doesn't open the circuit I can see it onmy scan tool I'm getting similar results as you when you replaced the control any information appreciated thanks
Thanks for the video, very informative. I just put a compressor, condenser, expansion valve and pressure switch in my 2011 civic. Cant get the clutch to engage, when I first put some refrigerant in it it seemed to have engaged for about 3 seconds and hasn't come back on since. Condenser fan spinning, and the system seems to want to be running, but there is something keeping the clutch from engaging. Not locked up, has oil, checked relay, checked fuses. Going to troubleshoot some more tomorrow. Thanks.
the 07 Civic SI coupe im working on has me in circles. 435,000 miles. I replaced the engine thanks to the radiator, 1 owner. customer said AC quit years ago. Compressor was junk. I did compressor, condenser, evap, relays and tried another control panel. No fans and no clutch. im a professional tech but no access to the wiring diagrams and the wires, and colors are different from what you show. I'm hearing it goes through the PCM also?
I have the same problem in my 08 civic lx that I just changed brand new ac compressor with relay and fuses but the ac clutch still not engaging whiling pressing the ac button. Would you said I have the same bad ac control panel too?
I got a 2011 TSX with no a/c. A/c compressor isn’t coming on and the condenser fan isn’t coming on. I bypassed and jumped the a/c relay and the compressor came on but when I swapped it with another same sized relay it turned back off. What do you think it can be
Good Video, I had a 09 Civic Hybrid, compressor wouldnt engage. It had a full charge. I checked for codes and it had a code for thermo sensor circuit open. I checked the thermo sensor it was .7 ohms at the sensor connector, but was open at the 3 pin connector. After much diag I found the ac clutch was open. Odd they send current thru the thermo sensor,then back thru the compressor clutch then to the 3 pin connector and up to the BCM. So replacing the compressor clutch took care of the open circuit. AC blows cold and works great now. ....Tom S. Chevrolet Master Tech 25 Years.
thanks for your video, I was diagnosing the ac clutch conector and when I was pulling the connector from the compressor side the wire terminals came out from the plastic connector. I manage to reinstall them and now it's working. The only thing that has me scratching my head is why the a/c clutch continues to be engaged even when I disconnect the AC pressure sensor?
I can't remember everything but it maybe it's because the pressure switch"open" the contact when there's adequate freon pressure. Just a conjecture. Will really need to look at service data to know for sure.
I'd imagine so. Because typically the primary connectors should be the same, it'll just be de-pinned where the option maybe available. Don't hold me to that though!
I have another problem, when my airco is filled with freon, it works for 5 minutes, than there is a pop and a horrible smell comes in the car. The outside fan does not turn on when the AC is switched on. I tested the fan with 12V and it is working. Where must i search the problem?
There is no power to the compressor clutch. I already checked the relays but everything is fine. The clutch only turns on manually. could it be the controller?
Thanks for sharing having a similar problem. My a/c just stopped working so I checked the obvious, it's fully charged, replaced the relay just in case and nothing. The blower turns on but nothing else happens. Compressor won't engage and the cooling fans do not come on.
Thanks for the video. Where did you get the wiring diagrams? I've been trying to find a place where I could get them and... no luck so far. My AC problem is that, sometimes, it goes off even when the AC switch in the panel is off. As I start the car I can hear the AC fan on, and once the car is on, sure enough the AC clutch is engaged. I took the connector off the control climate panel, and the AC does not care... still running! I also checked and swap the AC clutch and fan relays but there seems to be no issues with them. Anyway, just going a little crazy trying to diagnose this :(
I just experienced similar problems on my 07 civic but I tried to hit the clutch face with a bar and it started running. After a few days it did the same thing, tried to hit it again but no luck. Is it just the magnetic part that pull in the clutch went bad?
Well, now I feel I’m stupid. I checked the wiring but I did not reach all the way down next to the compressor. It turned out that the clutch ground wire was hanging there by a thread and with bumps on the road it turns back on. By looking down there you can really see it connected but it was not. I just butt connected it with a longer wire and grounded it somewhere else. Thanks for the replies though 😇
The scan tool doesn't do much in the "diagnostic" aspect alone, but provide data from the pcm or whatever control the module you're desiring access to, which cover steps in diagnosing that'll progress you in the discovery phase. Some are faster than others and have minute capabilities over others. If you want to expand your knowledge, get a more expensive tool with more options with additional accessory hookups. Such as oscilloscope and camera. If you just want BIDIRECTIONAL capability, all autel bidirectional tools have this ability. You can go to their site or check Amazon for tool comparison. You have to know what you're looking at in the data and have service information to understand the operation. So alone, the tool doesn't diagnose a thing but gives a hint to direction. As long as the tool you're looking for can scan ALL MODULES and BIDIRECTIONAL, you'll be ok regardless of cost and brand, for what you're trying to do with your car only and not a buisness thing
Okay I'm have questions what if you change all the fan and Compressor AC Condenser to still not working, anything can you tell anything wrong was this else please.
First check all relays and fuses that work for the ac, if all is good than check evap core, check to see if the ac pressure switch works, and expansion valve.
Watchimg from France and I have the same problem on my Honda Jazz 2005..How to change the switch and where to buy it Sir..Merci beaucoup..Hope to have a good explanation with you..Thanks
Question please. My thermal switch seems good: 1. Shows continuity 2. Passed the “ice cube” test and tapping test (ac wont come on when I apply cold and tap the switch). I cannot get the fan to come on when I made an open circuit with either of the pins going to the thermal unit. I did as you showed in the video: 1. Key on 2. Ran a wire from each pin at a time etc a ground with the power on In the video when you did that the fan would start to run. What do you think that means that mine won’t ? BTW mine is a 2013 with only about 80x k miles, but everything looks the same as the one you worked on. My fuses are fine, I both checked the power at the relay (had bith ground and power) and even bought a new relay to replace the old one but that had no effect either.
Hi Hope you're doing well. I really need your help on this. I'm also having A/C problem with my 08 Civic. I already replaced a new A/c Compressor on it, recharged with freon and the A/C still blowing warm air. I noticed that the new compressor works only if I jumped it on the fuse box A/C relay port but stops when I remove the jumping wire. Mechanic told me that the Climate Control unit is defective so I end up getting a new used one on my own at Pick n Pull, put it on the vehicle but still no luck and still doing the same thing which means that isn't the problem. Now I'm thinking that this video could be the solution to my problem. Now, I want to do this myself as I already spent alot getting my Ac running again and wife isn't happy about it. Now, my question is, is it tough to remove and pull out this A/C Switch line under the hood and to replace it with a new one? Do you have an instructional video on it? I already know how to remove the panels on the dash and I don't have signal tester so I can't test my wires with the tester but I think it's worth a shot swithing the A/C Switch which could solve the issue. I want to have it fixed before the heat wave comes. I would really appreciate your help. Thanks in advance.
Please understand this system has to be satisfied to operate. If there codes within the ac climate control module (climate control unit) the system will not operate. This will require a bidirectional tool to attain this info. However, I'll try and help. Go to the thermo switch, unplug and check for 12 with a test meter. If there isn't 12v there or anything lower, the climate control unit you replaced is a bad one, and should be replaced again. Please note that because it's replaced, it doesn't mean it's a good working component. I do have another video of replacing climate control unit and it being defective, needed to replace 3! For it to work. I'll put the video down below. Although this other video is a hybrid civic, same rules apply
@@partsshooter Hello. I did not test the thermo switch as I don't have an ohmmeter tester so I followed what you said. I went back to Pick n Pull to have the Climate Control exchanged for a different one. Got the new one plugged in the car and everything worked. Turns out the one I previously put on was also defective and you're absolutely right. Now the fans and new AC compressor were finally all working and in sync when I press the AC button on the controls but still blowing warm air after that. So I thought about it that it must be low on refrigerant so I took it to the mechanic who did my compressor and sure enough it needs more Freon so he added some free of charge. I'm so happy A/C is blowing cold now and most importantly was able to gain new knowledge and experience on this repair without spending more to it. Car is ready for the summer heat! I really appreciate your help man and I hope you continue helping people in need especially the ones who can't afford to have costly repairs. God bless you and your family man. Much love from Canada!❤️
Hey! I have a 07 civic, the clutch and compressor seems to work, fans also works properly. But it only blows cold when the engine is cold, when the car is hot then it blows hot air.´(when i start driving its cold, when i drive little bit it gets hot) Any idea? Thanks alot!
Low freon likely, check your low side pressure. Make sure it's close to 40psi when active. What happens is, the amount of freon that's in there is only effective at idle, once the engine Rev and pressure increase, the little freon that's in there is no longer conducive for reducing cabin temperature. Rev the engine to 2500 while the Guage is hooked up, if it drop below 20psi on low side, you're low on freon [typically... like 90 percent the time] There other things that cause this issue also. Inefficient compressor, possible obstruction on high side, bad pressure switch, expansion valve, condenser or bad evaporator
I was just going this test on my 09 civic si seems that im not getting any ground coming from that bluewyt/greenred on si when i turn on ac on but when i jump ground power on that line my ac works and does get cool any idea which of should i fix is it the micu box under dadh that i needed to check
@@partsshooter on the si wiring its it has 3 wired greenred and red black for the thermal switch for the ac and a redwhite for the ac clutch.. if i put ground directly on the redblack wires i get power on the ac comp and radiator fans and does get cold
Am having the same issue with same car,ac comes on for one second and will cat off permanently even when climate switch is off,it’s does same again when you off engine and start it again
@@Soulflwr1 honestly sounds like a blower motor. On a day it doesn't blow, turn the blower motor high, go to under the glove box and firmly, not aggressively, hit a flat spot or hit the base of the glove box.if it start blowing then the blower motors the problem. Air not blowing out the vents is a sign the blower motor has failed or related circuit. Try TH-cam the location, it may help. But that's what it sound like
I have 2008 Honda Civic and what happens is that the a/c compressor is Allways on so the fan.I change the the pressure switch and the expansion valve and the controls switch and still both a/c and fan stays on the compressor is not a gagging and disengaging
Try disconnecting the AC pressure switch and see if the fans shutdown. If so, possibility you got a bad pressure switch. Swap the fan relays, and see if this changes the condition, possibility you have a stuck relay
@@partsshooter my friend I replace the pressure switch a few days ago..I unplug it within 20 seconds the A/c and compressor shouts off the relay are goods
@@partsshooter yeah so the thermo switch from micu to compressor or whereever it comes from has no power, won't activate fans if u ground it or whatever
@@partsshooter well I didn't put freon in it cause have no power to it anyways, and bottom coolant temp read 1 degrees Celsius, and the guy who supposedly fixed my car took shit and never put it back, and ac tubes where loose, I figured if there's no power to it to wait on the freon
I don’t share knowledge on TH-cam.. I work too hard to figure things out myself. Then somebody else gonna copy what I just posted and get credit for it. Let them figure it out themselves
You saved my ass! I was pulling my hair out trying to figure the issue out with just the wiring diagram, but it obviously does not tell you the testing as you did. Props to you and thank you very much for taking your time and effort to make this video to help fellow mechanics!
Thanks Sam wood, that's very encouraging
Bro you are the man. Ive been on a civic for 2 wks looking for info this exact diagnosis. No clutch no fans. I grounded the the wire like you showed abd bingo we had lift off. Fans and compressor. Thanks 100 sr. You really broke down the diagnosis. Thks again
Hey Brother I am a shop owner and I wanted to compliment you on your videos. Great job My Man👍
Thanks
Absolutely excellent video, I could not figure out why my AC compressor was not engaging, I know why thanks to your video!!!
Great video and explanation! I was needing some clarity and this video provided me with the info I needed. Thanks bro!
Awesome man, thank you! My car is doing exactly the same thing. I have a 2008 honda civic ex-l and I tested my fans and by themselves they both work. When I probe the wires going to the ac compressor up by the alternator and add a ground the ac compressor comes on and the fans. I checked the fuses (all of them) and checked the relays and I had a bad one and replaced it but it's doing exactly what the car in the video was doing. I'm looking now to get a new ac head unit. That's the last thing for me to check and that has to be it. This video gives me confidence that that's my problem with my car. I really appreciate the video!!
Just got my ac working!! Thanks man!! I really appreciate this video!!
Bro!! I have the same exact problem with a 2010 manual civic.. which also was in an accident by the way.. i changed the pressure switch, checked thermal protector, relays, ac compressor, fans and what not.. Thanks for your video, im getting on it to check the switch. Hopefully thats my problem also.. Keep up with this type of videos!
Thank you for sharing your knowledge and experience. I see several posted about this generation of Honda Civic no compressor clutch because of failed control panels or failed clutch relay or low or high levels of refrigerant that have to be sorted. My 2007 Honda Civic LX had intermittent clutch operation. I began with bypass of the a/c clutch relay using a jumper wire to add a pound of refrigerant and validate refrigerant levels are normal. I began looking at the Honda triple function a/c pressure sensor but so far not found a video that shows volt ohm meter validations for the Honda triple function a/c pressure sensor yet. I swapped the a/c clutch relay and drove around some and appears the relay swap solved my vehicle problem but I am not done yet because I have not seen the compressor fan come on yet so I may have moved my problem from the clutch relay to the fan so I need to do more. I would love to see a future video that explains how to validate and test the Honda triple function a/c pressure sensor because the videos I found so far are unclear how the Honda triple function a/c pressure sensor works and how to validate it has good outputs for high and low and normal refrigerant levels. Again thanks I am impressed with your understanding of this system and how to troubleshoot and thanks for you taking your time to help other people.
Thank you. Very detailed. I needed this info. Pretty sure my problem is the switch panel and this will help confirm
I'll be working on mine tomorrow. This has to be the problem because nothing else has worked. Excellent video!
Anyway to use another button while waiting for the part to arrive. The Texas heat is brutal. Great video.
The failure is internal... A patch job would essentially be the old-school straight wiring😂😂. Basically emulate the signal required. The video tells what's needed to achieve this. Goodluck
Man you're the best. I have 2006 honda civic ex coupe 5 speed. I have the same problem. I checked the climate control unit and your 100% right I followed you're instructions and I troubleshoot the problem. My ac climate control switch is bad. Thanks for the video... 👍
GREAT, DEATIL VIDEO MAN , MAJOR PROPS !!
thanks bro, these helps alot!!
Good troubleshooting video. Thank you and God Bless.
Good job GOD bless you
Well done troubleshooting and diagnosis did you find any test procedures for the manual climate control I have the opposite problem fans come on high when key on and compressor stays engaged .when engine is running .turning off the ac switch doesn't open the circuit I can see it onmy scan tool I'm getting similar results as you when you replaced the control any information appreciated thanks
i spent whole day figuring it out once i was done i saw your video here. damn....
Youre a pro man
Thanks for the video, very informative. I just put a compressor, condenser, expansion valve and pressure switch in my 2011 civic. Cant get the clutch to engage, when I first put some refrigerant in it it seemed to have engaged for about 3 seconds and hasn't come back on since. Condenser fan spinning, and the system seems to want to be running, but there is something keeping the clutch from engaging. Not locked up, has oil, checked relay, checked fuses. Going to troubleshoot some more tomorrow. Thanks.
Check your relay and fuse... this video should have that info. If I recall.
Honda civic its a good car .thanks daddy for sharing .
so smart dude! thank you for this!
the 07 Civic SI coupe im working on has me in circles. 435,000 miles. I replaced the engine thanks to the radiator, 1 owner. customer said AC quit years ago. Compressor was junk. I did compressor, condenser, evap, relays and tried another control panel. No fans and no clutch. im a professional tech but no access to the wiring diagrams and the wires, and colors are different from what you show. I'm hearing it goes through the PCM also?
I’m trying to find that AC switch for my 2006 Honda civic? Do you have a link or a proper name to find this switch?
I have the same problem in my 08 civic lx that I just changed brand new ac compressor with relay and fuses but the ac clutch still not engaging whiling pressing the ac button. Would you said I have the same bad ac control panel too?
I got a 2011 TSX with no a/c. A/c compressor isn’t coming on and the condenser fan isn’t coming on. I bypassed and jumped the a/c relay and the compressor came on but when I swapped it with another same sized relay it turned back off. What do you think it can be
Thank you thank you thank you thank you thank you thank you thank you 🙏
Do you have the multimeter grounded?
Good job thaks
Good Video, I had a 09 Civic Hybrid, compressor wouldnt engage. It had a full charge. I checked for codes and it had a code for thermo sensor circuit open. I checked the thermo sensor it was .7 ohms at the sensor connector, but was open at the 3 pin connector. After much diag I found the ac clutch was open. Odd they send current thru the thermo sensor,then back thru the compressor clutch then to the 3 pin connector and up to the BCM. So replacing the compressor clutch took care of the open circuit. AC blows cold and works great now. ....Tom S. Chevrolet Master Tech 25 Years.
Honda definitely could've used a different system here! Thanks for that info!
liking that wire clamp for testing brown wire on hvac look like good quality any buy links?
You maybe looking at the "piercing pen", you can get these from Amazon. They're accessories for my oscilloscope, autel mp408.
Should I follow the same steps if my AC clutch is not engaging on a 2000 Honda civic?
Hi there my honda civic when I full the wire from ac pressure switch it turn on after 5sec it stop?
Thank You........thank You,........
Youre welcome... You're welcome....😎
thanks for your video, I was diagnosing the ac clutch conector and when I was pulling the connector from the compressor side the wire terminals came out from the plastic connector. I manage to reinstall them and now it's working.
The only thing that has me scratching my head is why the a/c clutch continues to be engaged even when I disconnect the AC pressure sensor?
I can't remember everything but it maybe it's because the pressure switch"open" the contact when there's adequate freon pressure. Just a conjecture.
Will really need to look at service data to know for sure.
so 25 and 27 ohms to ground with a toggle will bypass in mean time for hot dazz untill parts come in great job !
Quick question, if I replace the unit for one that doesn’t have the heated mirror option. Will they work or you need the specific one with it?
I'd imagine so. Because typically the primary connectors should be the same, it'll just be de-pinned where the option maybe available. Don't hold me to that though!
I have another problem, when my airco is filled with freon, it works for 5 minutes, than there is a pop and a horrible smell comes in the car. The outside fan does not turn on when the AC is switched on. I tested the fan with 12V and it is working. Where must i search the problem?
There is no power to the compressor clutch. I already checked the relays but everything is fine. The clutch only turns on manually. could it be the controller?
Thanks for sharing having a similar problem. My a/c just stopped working so I checked the obvious, it's fully charged, replaced the relay just in case and nothing. The blower turns on but nothing else happens. Compressor won't engage and the cooling fans do not come on.
Try low pressure sensor
thank you much, the car was in an accident and the condenser was damaged.
Honda civic 😍
Superficially it's a cute car! Just the structural damage wasn't fixed properly. I can see you driving a civic 😆. A girl owns this car!
Thanks for the video. Where did you get the wiring diagrams? I've been trying to find a place where I could get them and... no luck so far.
My AC problem is that, sometimes, it goes off even when the AC switch in the panel is off. As I start the car I can hear the AC fan on, and once the car is on, sure enough the AC clutch is engaged. I took the connector off the control climate panel, and the AC does not care... still running! I also checked and swap the AC clutch and fan relays but there seems to be no issues with them. Anyway, just going a little crazy trying to diagnose this :(
Identifix.com
Daddyyyy thanks much sorry I will do promise next week your wish 😁😁😁The squats challenge ✌️✌️
I just experienced similar problems on my 07 civic but I tried to hit the clutch face with a bar and it started running. After a few days it did the same thing, tried to hit it again but no luck. Is it just the magnetic part that pull in the clutch went bad?
Yes, from what you described, it seems like the clutch is bad
It might be the gap from the front plate is not right. All you do is remove the front plate and remove a shim to close the gap and that might be it.
Well, now I feel I’m stupid. I checked the wiring but I did not reach all the way down next to the compressor. It turned out that the clutch ground wire was hanging there by a thread and with bumps on the road it turns back on. By looking down there you can really see it connected but it was not. I just butt connected it with a longer wire and grounded it somewhere else.
Thanks for the replies though 😇
Friend how do i ground the switch?am trying but cannot doit
What is the best diagnostic tool that will diagnose the AC on my 2009 civic?
The scan tool doesn't do much in the "diagnostic" aspect alone, but provide data from the pcm or whatever control the module you're desiring access to, which cover steps in diagnosing that'll progress you in the discovery phase. Some are faster than others and have minute capabilities over others.
If you want to expand your knowledge, get a more expensive tool with more options with additional accessory hookups. Such as oscilloscope and camera. If you just want BIDIRECTIONAL capability, all autel bidirectional tools have this ability. You can go to their site or check Amazon for tool comparison.
You have to know what you're looking at in the data and have service information to understand the operation. So alone, the tool doesn't diagnose a thing but gives a hint to direction.
As long as the tool you're looking for can scan ALL MODULES and BIDIRECTIONAL, you'll be ok regardless of cost and brand, for what you're trying to do with your car only and not a buisness thing
Okay I'm have questions what if you change all the fan and Compressor AC Condenser to still not working, anything can you tell anything wrong was this else please.
First check all relays and fuses that work for the ac, if all is good than check evap core, check to see if the ac pressure switch works, and expansion valve.
Watchimg from France and I have the same problem on my Honda Jazz 2005..How to change the switch and where to buy it Sir..Merci beaucoup..Hope to have a good explanation with you..Thanks
Hey bud, I changed the panel switches, and compressor still not engaging. Checked the fuse, relay, pressure switch.
Question please.
My thermal switch seems good: 1. Shows continuity 2. Passed the “ice cube” test and tapping test (ac wont come on when I apply cold and tap the switch).
I cannot get the fan to come on when I made an open circuit with either of the pins going to the thermal unit. I did as you showed in the video: 1. Key on 2. Ran a wire from each pin at a time etc a ground with the power on
In the video when you did that the fan would start to run. What do you think that means that mine won’t ?
BTW mine is a 2013 with only about 80x k miles, but everything looks the same as the one you worked on. My fuses are fine, I both checked the power at the relay (had bith ground and power) and even bought a new relay to replace the old one but that had no effect either.
Give me a few min, but I'll need to know the low side pressure. System obviously not working, what's your pressure reading?
@@partsshooter I don’t have a good reader. I tried to put a little Freon in it and the can dial showed the very low level of the green section.
@@28282222 start there 1st and get back with me on the pressure values. About 80 psi is needed to be in system for a request to operate
Hi Hope you're doing well. I really need your help on this. I'm also having A/C problem with my 08 Civic. I already replaced a new A/c Compressor on it, recharged with freon and the A/C still blowing warm air. I noticed that the new compressor works only if I jumped it on the fuse box A/C relay port but stops when I remove the jumping wire. Mechanic told me that the Climate Control unit is defective so I end up getting a new used one on my own at Pick n Pull, put it on the vehicle but still no luck and still doing the same thing which means that isn't the problem. Now I'm thinking that this video could be the solution to my problem. Now, I want to do this myself as I already spent alot getting my Ac running again and wife isn't happy about it. Now, my question is, is it tough to remove and pull out this A/C Switch line under the hood and to replace it with a new one? Do you have an instructional video on it? I already know how to remove the panels on the dash and I don't have signal tester so I can't test my wires with the tester but I think it's worth a shot swithing the A/C Switch which could solve the issue. I want to have it fixed before the heat wave comes. I would really appreciate your help. Thanks in advance.
Please understand this system has to be satisfied to operate. If there codes within the ac climate control module (climate control unit) the system will not operate. This will require a bidirectional tool to attain this info. However, I'll try and help.
Go to the thermo switch, unplug and check for 12 with a test meter. If there isn't 12v there or anything lower, the climate control unit you replaced is a bad one, and should be replaced again.
Please note that because it's replaced, it doesn't mean it's a good working component.
I do have another video of replacing climate control unit and it being defective, needed to replace 3! For it to work. I'll put the video down below. Although this other video is a hybrid civic, same rules apply
th-cam.com/video/vU1tHyNwpOY/w-d-xo.htmlsi=_31MML2oPxZFYKZY
@@partsshooter Hello. I did not test the thermo switch as I don't have an ohmmeter tester so I followed what you said. I went back to Pick n Pull to have the Climate Control exchanged for a different one. Got the new one plugged in the car and everything worked. Turns out the one I previously put on was also defective and you're absolutely right. Now the fans and new AC compressor were finally all working and in sync when I press the AC button on the controls but still blowing warm air after that. So I thought about it that it must be low on refrigerant so I took it to the mechanic who did my compressor and sure enough it needs more Freon so he added some free of charge. I'm so happy A/C is blowing cold now and most importantly was able to gain new knowledge and experience on this repair without spending more to it. Car is ready for the summer heat! I really appreciate your help man and I hope you continue helping people in need especially the ones who can't afford to have costly repairs. God bless you and your family man. Much love from Canada!❤️
Hey! I have a 07 civic, the clutch and compressor seems to work, fans also works properly. But it only blows cold when the engine is cold, when the car is hot then it blows hot air.´(when i start driving its cold, when i drive little bit it gets hot) Any idea? Thanks alot!
Low freon likely, check your low side pressure. Make sure it's close to 40psi when active.
What happens is, the amount of freon that's in there is only effective at idle, once the engine Rev and pressure increase, the little freon that's in there is no longer conducive for reducing cabin temperature.
Rev the engine to 2500 while the Guage is hooked up, if it drop below 20psi on low side, you're low on freon [typically... like 90 percent the time]
There other things that cause this issue also. Inefficient compressor, possible obstruction on high side, bad pressure switch, expansion valve, condenser or bad evaporator
@@partsshooter Ill do that that, i appreciate your help!
where is the thermo switch location
would the compressor turn on if i have a leaking condenser radiator ?
Yes. If you're condenser is leaking, you'll loose freon and system would disengage.
What if on the brown wire we have 0 volts with new switch aswel
It was improperly diagnosed or defective unit if properly diagnosed
This system is intricate over the norm ac system... Check thermo switch, pressure switch, Freon level, fuses and or scan data.
I was just going this test on my 09 civic si seems that im not getting any ground coming from that bluewyt/greenred on si when i turn on ac on but when i jump ground power on that line my ac works and does get cool any idea which of should i fix is it the micu box under dadh that i needed to check
I'll pull a diagram shortly for you
I don't see bluewht/green red wire
@@partsshooter on the si wiring its it has 3 wired greenred and red black for the thermal switch for the ac and a redwhite for the ac clutch.. if i put ground directly on the redblack wires i get power on the ac comp and radiator fans and does get cold
@andrewdero6271 gotcha I was looking at climate control unit for your vehicle. One min...
@@partsshooter yeah i havent watch the whole video when i commented im gonna see the ac unit in the stereo later on it might be the problem
What if you have 12.53 resistance value
I don't recall the out of spec value. Maybe I mention the value in the video.
I have a resistance value even if the a/c button is off. What did I do wrong?
What's the value?
@@partsshooter Never mind, found it. You just saved my ass from a brand new compressor thx bro🙏🏻
Am having the same issue with same car,ac comes on for one second and will cat off permanently even when climate switch is off,it’s does same again when you off engine and start it again
I get nothing one day, next day ac and defroster works??? Any idea what's going on?
Can you provide any more detail, does it blow? Any other functions work or not?
@@partsshooter no doesn't blow but today everything works (ac, heat, and defroster does)
@@Soulflwr1 honestly sounds like a blower motor. On a day it doesn't blow, turn the blower motor high, go to under the glove box and firmly, not aggressively, hit a flat spot or hit the base of the glove box.if it start blowing then the blower motors the problem.
Air not blowing out the vents is a sign the blower motor has failed or related circuit.
Try TH-cam the location, it may help. But that's what it sound like
i cant find it
I have 2008 Honda Civic and what happens is that the a/c compressor is Allways on so the fan.I change the the pressure switch and the expansion valve and the controls switch and still both a/c and fan stays on the compressor is not a gagging and disengaging
Try disconnecting the AC pressure switch and see if the fans shutdown. If so, possibility you got a bad pressure switch. Swap the fan relays, and see if this changes the condition, possibility you have a stuck relay
@@partsshooter I will check it tomorrow and let you know thank you for answering
@@partsshooter my friend I replace the pressure switch a few days ago..I unplug it within 20 seconds the A/c and compressor shouts off the relay are goods
Is blowing warm air now them it cools off but the a/c and compressor and fan won’t stop
I have problem figuring out where the ac compressor wire goes to micu to test, have no power to it or HVAC on ac switch
Did you test the thermo switch at compressor?
@@partsshooter yeah so the thermo switch from micu to compressor or whereever it comes from has no power, won't activate fans if u ground it or whatever
Im just trying to figure out where thermo switch connects too or just gonna hook up manual switch for fans at this point
@@adrianwing3617 let's start from scratch... Have you checked freon level? Does it have over 40psi of pressure? Yes or no
@@partsshooter well I didn't put freon in it cause have no power to it anyways, and bottom coolant temp read 1 degrees Celsius, and the guy who supposedly fixed my car took shit and never put it back, and ac tubes where loose, I figured if there's no power to it to wait on the freon
you are reading the tex book dule
Thermal connector
How do you know that much bro, like i dont even know how to use the multimeter
Identifix.com provides me with service info and additional testing procedure if I need them
Identifix isn't perfect but it provide direction for the MOST PART
I don’t share knowledge on TH-cam.. I work too hard to figure things out myself. Then somebody else gonna copy what I just posted and get credit for it. Let them figure it out themselves
You seem like a nice person