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How I fixed my 2010 Rav4 AC for $40

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#21 ·
Great Ideas guys, pity I didnt see all this before my wife blew $1000 on a new compressor.....alas we now have an aircon that still doesn't function....
So when the car is cold, starts up, air con blows cold, drive for 1/2hr, stop and do some shopping.... come back start up, aircon now blows hot.....
same thing every time... and the aircon guys are backtracking something fast about this....
any Ideas guys.... Im ok working on cars but the eyes are going... to many years welding and getin old... so give me something to try here please... Cheers
 
#22 ·
Get TECHSTREAM and check the FLOW SENSOR VOLTAGE. With AC OFF it has to be at least 3.8volts.

Techstream

www.ebay.com

Mini VCI J2534 OBD2 Diagnostic Tool Cable For Toyota Lexus Scion TIS Techstream | eBay

Find many great new & used options and get the best deals for Mini VCI J2534 OBD2 Diagnostic Tool Cable For Toyota Lexus Scion TIS Techstream at the best online prices at eBay! Free shipping for many products!
www.ebay.com

www.rav4world.com

2011 Rav4 AC not working/ Blows hot air

Hi, (2011 rav 2.5l) When I press the button on my AC it just blows hot air ! The clutch doesn't kick in and the fuses look ok! I used teachstream and was able to get the clutch working and the AC was nice and cold. The AC button in the car didn't turn on while it was running! Is it...
www.rav4world.com www.rav4world.com
 
#23 ·
My AC was not working and blowing outside air and I was able to fix my AC 2011 Rav4 LE v4 by using a piece of magnet and saved over $2000. The problem was a faulty AC flow sensor on the compressor and by adding the magnet it amplify the weak signal for the computer system to work correctly. I followed procedures provided on this link below:
I put magnetic on, it turned on the fan and AC, I had to also add some refrigerant since it was low. The AC is now working great and cold.

RX350 2010/2011 Air conditioning DTC B1479 cheap solution - ClubLexus - Lexus Forum Discussion
The solution is provided by User OjeG, scroll down and read for this easy fix. Took me 15 minutes from start to finish.
Reply #88 by user OjeG for Easy fix with Neodymium magnet
 
#24 · (Edited)
Like I said somewhere else, that magnet solution is just forcing the sensor to send a full level signal all the time. That negates the control loop for the compressor, and that will make the compressor pump high pressure all the time.

It might damage the compressor seals, and will freeze the evaporator coil, especially when run the AC in the spring/fall as dehumidifier (defroster mode when outside air temperature is low, but moist).

The correct fix is replacing that sensor. Once circular clip to remove.
I found this video, where the sensors are clear and you can see the circ clips too.:

 
#25 ·
Hello,

I am super stressed as it is really hot out and my mom's AC has been out for a while. Initially, it would work then after some usage the AC light would flash and cold air no longer would blow out. I then replaced the Mg CLT Fuse Relay (Used Denso OEM part for replacement) and that seemed to do the trick when I tested. However, the next day my family said the issue came back. It got progressively worse where now no cold air turns on and it goes to AC flashing light after 8-10 seconds of turning it on. Will this sensor solution work with a 2006 RAV4 V6 Automatic? I rather just try that and see if that fixes it.

I checked the Low pressure and it was fine. The radiator and condenser fan work. Checked other AC related fuses/relay and they are fine. The magnetic clutch spins freely, and gently tried tapping it with a rubber hammer to see if it was stick but no luck with that either.

Is there a part number for this sensor so I could order from Amazon/Rockauto? Otherwise if someone ordered from eBay recently do they have an exact link so I could order from that same trusted source. I'd greatly appreciate it.

Thanks!
 
#26 · (Edited)
Toyota doesn't sell separately this sensor.
The 6cyl compressor is different. For the 4 cyl compressor I found this:

Fits:
TSE14C / TSE14F / TSE17C / TSB19C
Applications:
For TSE14C / TSE14F / TSE17C Compressor
2012-2017 Toyota Camry 2.5 Liter Gas Engine ONLY!
2011-2016 Toyota Sienna 3.5 Liter Engine ONLY!
2009-2012 Toyota RAV4 2.5 Liter Engine ONLY!
2011-2016 Scion tC 2.5 Liter Engine
2010-2016 Subaru Legacy 2.5 Liter / 3.6 Liter
2010-2015 Subaru Outback 2.5 Liter / 3.6 Liter
2011-2013 Toyota Corolla 1.8 Liter Engine ONLY!
2011-2014 Toyota Matrix 1.8 Liter Engine ONLY!
This new Flow Sensor is compatible with your original Denso TSE17C/TSE14C Compressor for the vehicles listed above!
 
#28 ·
For those that are using TechStream to check the Flow Sensor voltage:

Any of you using a Mini VCI adapter? If so, what exact version of TechStream is working for you with it? I am trying to find latest one that is confirmed working with this particular adapter.

Thank you!
 
#29 ·
I am using this version: Toyota Techstream V15.00.028 (04/2020) + Loader
The installation on Windows 7 x64 was a trip tough... I don't even remember what actually worked from those:

How to install XHorse MVCI software on Windows 7/8 64bit – OBD2CarTools Pakistan

www.obd2cartools.com www.obd2cartools.com

How to Install and Activate Mini VCI Toyota Techstream V14.20.019 on Windows 7? | OBDII365.com Official Blog

Newer version Toyota TIS Techstream 14.20.019 has been tested and verified working great with Mini VCI J2534 cables. Version: 14.20.019 with older v13.00.022 optional Compatible device: Mini VCI cables (SV46-D, SV46-D1), Mangoose VCI Operating system: WinXP/Win7 Language: English Chinese…...
blog.obdii365.com
minivci.blogspot.com

Toyota Techstream J2534 review on Win7 Win8 64bit

I bought a cheap Chinese Mini VCI J2534 cable for diagnostics and auto settings. I used it and found that you can do a lot with it through ...
minivci.blogspot.com minivci.blogspot.com
 
#30 · (Edited)
You just need to get any version working then you can update to a newer version over it.

The Drivers are the problem on windows 10


How to install MINI VCI Toyota Techstream V13.00.022 No Activation | OBDII365.com Official Blog

Toyota TIS Techstream V13.00.022 software has been tested and verified working great on Windows 7. Software version: V13.00.022 (It’s crack version. Does not need activation) Operation system: Windows 7 32 bit TOYOTA Techstream V13.00.022 download link...
blog.obdii365.com
 
#31 ·
Here's another thread

www.rav4world.com

Toyota Techstream and MVCI

I bought Toyota Techstream and MVCI cable on ebay 2012 Newest V7 11 010 Mini VCI V7 for Toyota Cable Software Tis Techstream | eBay for $28.99. This is the same software and a similar interface that the dealerships are using to diagnose, upgrade, reset, etc our Rav4s. I can confirm this system...
www.rav4world.com www.rav4world.com
 
#32 ·
All,

I can't seem to see the Flow Sensor in Techstream. I've tried over 5 different drivers, and three versions of Techstream where I tried both North America and Japan region.

V13.00.022
V14.30.023
V15.10.029

Now that I am reading this thread more closely it appears that the 2006 V6 RAV4 may not even have a flow sensor. Is that correct? Below is the screen I see when I navigate to Body Electrical > Air Conditioner > Data list, no matter which Techstream or driver I use:

153337


Does that mean the V6 does not have the flow sensor? I'm wondering if I can just try the magnet trick to at least temporarily get AC to work, thoughts if magnet works with V6?

Thank You!
 
#35 · (Edited)
You can't replace a sensor with a relay ;)

In the above pic I can see what looks like a clutch solenoid connection, but also there is one more connector on the rear of the compressor that I think is the pressure sensor.
My Ford, Huyndai, Kia cars have the pressure sensors in the accumulator bottle, easy to access. Nothing in the actual compressor. Toyota is "different".

In the diagram below I see that what appears to be flow sensor is only for the 4 cyl engines (the *2):

153343
153344
 
#39 ·
@2011rav4 said:
If the CLUTCH isn't working then there's a RELAY that might be BLOWN.

Might be a good idea for people to read the whole post before responding
Click to expand...
I replaced the MG CLT relay with a Denso one, and also swapped with a known working Ignition one but AC still did not work but car did start up so I know the relay is Ok. Is there any other relay's I should be looking at? I believe this is the only one.

Thanks!
 
#40 · (Edited)
It's strange that there are no codes present... You even have techstream!
Maybe this:
us.lexusownersclub.com

A/c Codes

TROUBLE SHOOTING SELF-DIAGNOSTICS An Electronic Control Unit (ECU) within A/C-heater control panel monitors system circuits and stores trouble codes in memory if problems are detected. All codes, except Codes 22 and 23, are stored in memory. Malfunction is current if Code 22 or 23 is displayed. T...
us.lexusownersclub.com us.lexusownersclub.com
 
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