r34 Climate Control

[NJR 34GTT]

The climate control in my 34 seems to not work correctly.

When in auto mode and set to any temperature the fan automatically turns to maximum and starts blasting hot air no matter what temperature i set the display too.

In manual mode, it blows cold air when set to 18 degrees and blows hot air when set to any other temperature.

It seems like the temperature sensor isn't working so the climate control can't figure out what temperature it is inside the car?

Or is this just normal behaviour and I have to live with it? Would much prefer to be able to set a temp and get it to hold as I constantly have to switch up and down from 18 to get the right temp.

[Abo Bob]

ahh... not normal... I have noticed that mine doesn't heat at all if it's set to 24 or less even if the temp inside is obviously freezing.

Also, in the Nissan literature they say it can display outside temp. but I can't work that one out.

[NJR 34GTT]

Can't see anyway/any button that could show outside temp on mine either.

Guess I'll just get it looked at next service, which will be v soon anyway.

[ylwgtr2]

to show ambient temp.....push the heat/cold control knob in....in your climate has trouble

check that the sensor (there is a small grille in the dash on the left hand side off the dash cluster surround)is plugged in

[666DAN]

You can push the knob in? Right I'm going down to the carpark to see this

[666DAN]

OK...didn't do anything, actually feel like a bit of a dick for sitting there pressing it so many times haha

[NJR 34GTT]

Don't think it would do anything either but I'm still gonna give it a shot.

As for the sensor not being plugged in, a problem along those lines is what I suspected but where exactly is the sensor? Couldn't quite decipher the location.

[ed]

There is a light sensor up on the dash, it's a round circle.

Then there is the cabin temp sensor which is to the left of the steering column.

[ed]

Climate Control Diagnostics R32 and R33

 

The climate control has a diagnostic mode.  

 

Enter the diagnostic mode by pressing the OFF button for five seconds within ten seconds of turning the ignition on.

Sensor check  

Sensor check is selected by pressing HOT switch (the red triangle) while in diagnostic mode. The microcomputer detects whether each sensor input signal is within correct parameters. The results are displayed on the screen.  

 

If normal, a "20" is displayed.

 

If abnormal the failed sensor number is displayed. The sensor numbers are as follows:

 

20 - all is normal

21 - outside air sensor

22 - Inside air sensor

23 - Water temperature sensor

24 - Intake temperature sensor

25 - Sunload sensor (small sensor on the left hand side of the dashboard near the windscreen)

26 - PBR

27 - Refrigerant temperature sensor

 

This should tell you if any of your sensors are faulty

have u tried this diagnostics method on the 34?

[NJR 34GTT]

There is no red triangle button on the 34?

[ed]

ok i just tried it.

and I got into the diagnostic mode.

here is what I found.

when you turn the temp knob all the way to the coldest, it seems to be in "light + LCD test mode" as all the lights on the aircon unit light up and all the icons on the LCD are visible too.

next if you turn the temp up slowly, I think 2 or 3 degrees up, you will get in to what I think is the sensor test as I received a 20 meaning no problems, you might receive a different number here NJR 34GTT since your aircon is playing up.

the next few modes I have no idea what they are, they gave me a 5 and a 41 from memory.

[666DAN]

Yeah got the same as you ed, also got to see those extra symbols on the LCD that I've never seen before?

[ed]

didn't notice the extra symbols on the LCD screen.

I'll have another look after work.

I was told that the last mode was to fine tune the temp by +/-3 degrees.

Not sure on that...also the 41 when shown, air was blowing out I think. maybe testing the fans?

[666DAN]

yeah the other symbols are on the right of the clock like an arrow going through a grate looking thing...and n/p appears under it.....don't quote me on those letters though

[NJR 34GTT]

Yeah I tried the diagnostic mode and got what I expected a 22 and a 25. The 25 being from the fact the car is in the garage. I suspect they didn't reconnect the internal sensor properly when my profecb handset was disconnected.

Now the task of pulling apart my dash just to get to that sensor and the back of the climate control seems a little daunting.

Happy to know that I've determined that it is the internal temperature sensor though.

Thanks guys.

Oh and I noticed that weird grate symbol too.

[AFRO]

i got a 25 too!! but my climate control is running fine,,, heats and cools when its supposed to,,

i haven't tried looking for the sunload sensor,, so where exactly is it on top of the dash?

i think that grate a/b symbol if for the internal air filter,,, will light up if its gets blocked i guess,, the r34's came with an air con air filter. there is a thread on sau about how to go about removing/cleaning the air -filter,,

http://www.skylinesaustralia.com/forums/sh...ight=r34+filter

afro

[NJR 34GTT]

Sunload sensor is near the edge of the front side of the dash on the passenger side. Looks like a small solar cell.

[AFRO]

ok,, i figured out where the sunload sensor is,,

anyone got any ideas on how to remove it?

reckon the whole vent thing just pops out?

[ylwgtr2]

ok...34 gtr hot/cold control knob pushs in to display ambient temp....to takeout the sun sensor....remove the whole grille that holds it there is no bolts to hold the grille in...it just clips in....pry it out with a screwdriver

[PHATR32]

hey, we tried pushing the controll knob in drivers r34 and it doesnt actually push in. could the knob it self be stuffed?

steve