Jump to content
SAU Community

R32 Gtr Aircon Problem

edspaged2

By edspaged2,
in General Maintenance

 Share

Recommended Posts

edspaged2 Rising Star

edspaged2

Posted
Posted

G'day people,

I'm having trouble with my aircon. When a/c is turned on via climate control amp, the compressor doesn't turn on. The only way a/c can be turned on is if terminals 5 and 3 from the a/c relay is bridged out. I'm not good with my electrics but i have the following info that may help fing what the problem is.

with ignition left off: 0Volts in all terminals 1,2,3,5

terminals 1,2,3 are 0 ohms. 5th terminal has around 12.5 ohms varying

with ignition turned to ON: 0 volts in terminals 1 and 3, 11.5 volts in terminal 2, 11.4 in terminal 5

terminals 1,2,5 are o ohms. terminal 3 has .88 ohms.

i hope this helps. Cheers :sorcerer:

Link to comment
https://www.sau.com.au/forums/topic/155956-r32-gtr-aircon-problem/
Share on other sites
edspaged2 Rising Star

edspaged2

Posted
  • Author
Posted

Yeah, the air comes out cold. I've checked all fuses. I've also checked the diagnostic system for the a/c amp but it only came up with the sun sensor, only because i did it in the shade. I think it may be a problem with the a/c amp or somewhere in the wiring harness, but too much wiring confuses the hell outta me. I've checked the wiring diagram for the a/c in the repair manual under HA-3. If anyone has that diagram and could roughly point out where there may be a bad connection, they are bloody legendary.

Godzilla32 Veteran

Godzilla32

Posted
Posted (edited)

Id say its low on gas. Low enough to not engage the clutch on the compressor but still just enough to get the air cool.

So get the system leak tested, repaired, and regassed.

Edited by Godzilla32
Risking Grand Master

Risking

Posted
Posted

Id be doing the same.

Get it checked out properly. With a set of guages on the system the problem can be isolated in seconds.

If its the wiring issue then obviously you will be looking at the relay switching circuit which is not overly complicated.

noone Experienced

noone

Posted
Posted

Having a similar problem with mine can bridge the relay and compressor kicks in cold an lovely ran for an hour or so like this then poped the fuse. Checked out the compressor coil pin 5 on the relay in the manual drawing mentioned earlier measures 3.5 Ohms as per the manual (the 12.5 ohms ed is seeing would suggest the coil clutch to me). Looking at said drawing the only thing that can stop the signal from the ECCS control unit is the dual pressure switch. Was wondering if anyone knows if the dual pressure switch will stop the compressor switching on if pressure is to high or only if its to low. R134 gas has much higher head pressure than r12 (the original gas) and if its still the original switch this may be the problem or part of it.

edspaged2 Rising Star

edspaged2

Posted
  • Author
Posted

My mate tested the pressure switch and he said it was fine. I think it may be a problem with the a/c amplifier. My mechanic friend was crossing over wires from the fan relay to the a/c relay. I dont know why he did that but must have fried it. The a/c used to work before he did this. He was trying to find out why my thermo fan wouldn't turn on.

  • 2 months later...
Cubes Grand Master

Cubes

Posted
Posted

So you have checked you don't have a dud sensor?

Throw it in to diag mode and have a look at the temperature values from the 4 sensors or what ever it is.

I had a dud cabin air inlet temp sensor, constantly reading -30degree's.. Obviously it would refuse to engage the aircon's compressor as it was too damn cold. lol

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • TurboTapin
      boost source Size Garrett gt28 gen2

      By TurboTapin · Posted

      You just need to remove the compressor housing, not the entire turbo. I would not be drilling and tapping anything with the housing still on anyways. 
    • Kinkstaah
      Mistakes were made, my R34 Story

      By Kinkstaah · Posted

      So, I put my boat on a boat. First of all, I'm going to come out and say it. Why is Tasmania not considered a holy goal, an apex that all road-legal modified cars go to, to experience? This place is an absolute wonderland of titanic proportions. If people are already getting club runs for once in a lifetime 30 person cruises to Tassy then I've never seemed to see it. It is like someone replaced the entire place with an idyllic wonderland for cars, and all of the people living there with paid actors who are kind, humble, and friendly. Dear god. After doing a lap of almost all of the place I've found that it's a great way to find out all of the little things that the car isn't doing quite right and a great way to figure it all out. All in all, I drove for 4 hours a day for a week and nothing broke. I didn't even need to open the engine bay. This is by all means a great success, but it has left me with a list of things to potentially address. I also now have a 3D printed wheel fitment tool which annoyingly hasn't got any threads in it to actually assemble it. I might be able to tape it together to check the sizing I actually want to use, but it'll likely involving pulling the shocks out to properly measure travel at least at the front, and probably raise the car while I'm at it, at least in the rear. I scraped on quite a few things and I'm not sure how else to go about it. I was taking anything with a bump at what felt like 89 degree angles. And address those 10 other tasks. And wash the car. God damn it is dirty. And somehow, the weather was perfect the entire time - And because I was on the top of Mt Wellington it turns out it was very much about to freeze up there. I did something I typically never do and took some photos up there in what must have been -10 and the foggy felt like suspended ice, rather than mere fog. If you own a car in Australia, you owe it to yourself to do it.
    • QB6SAGR
      Battle of the broken skylines

      By QB6SAGR · Posted

      Damn that was hilarious, and a bit embarrassing for skylines in general 😂 vintage car life ey. That R33 really stomped. Pretty entertaining stuff
    • cosline
      R32 gtr transmission strength, billet plate

      By cosline · Posted

      Hi, I have a r32 gtr transmission. Does any of you guys have an idea how much power it will hold with the billet center plate and stock gearset? At what power level and use did yours brake with or without billet plate? Thanks, Oystein Lovik
    • Rezz
      Spotted on the street....

      By Rezz · Posted

      Saw this replica police car based on a Mitsubishi Starion XX parked next to a 'police box' (it's literally a box) in Hirohata, Himeji City in Hyogo prefecture the other day. It's owned by Morii-san who is a local Mitsubishi Starion enthusiast. According to a local radio station blog post, he always wanted to make a police car himself based on ones he saw in his favourite Manga comics.  As it's illegal to modify a car to look like a police car and drive on the road, Morii-san tried many times to get permission from Aboshi police station headquarters nearby. They refused initially by after they got tired of that they granted him permission. However, the car can only be displayed on private property and obviously can't be registered as long as the police livery is present. The car was completed at a cost of 1.5 million yen (US$ 10,000) in addition to the car cost. A location was chosen outside Hirohata Police box where the car can easily been seen from the street. Morii-san has two other Starion road cars, both widebody GSR-VRs.
×
×
  • Create New...