Aircon problems - newbie

[Asajj]

Hi all. I have a 2008 Vellfire 3.5 v6. I bought from a dealer near London last year and I’m the first UK owner. I love it! 

Sadly the Aircon hasn’t worked since I bought it and stupidly I presumed it just needed regassing.

 

I recently took it to a generic nationwide garage who did this, but they tell me it’s still not working and their equipment won’t speak to Japanese cars. They advised I need a diagnostic. I have rang loads of local garages - all neg. Eventually I have found one about an hour away who can do a diagnostic for around £90. 

So before I take the trip and spend the money, is there anything I can do to check at home? 

We’ve looked at the fuse in the engine bay- fine. Audio and all other dash/instrument controls work. Engine sound changes when Aircon button is pressed (after a few seconds lights starts to flash). 

I don’t have a book so don’t know what all the display things mean. 
Eg can anyone team me what ‘clean’ means next to the clock?? I read a dirty cabin filter can affect Aircon. 
Thanks in advance and sorry for stupid questions. 

[Chris.ac]

Yes. You can get an error code displayed and a test of the systems without connecting anything.

 

I'm just shopping at moment, but give me an hour and I'll let you know which buttons to press, it should be holding the auto and recirculate button whilst car is in ign mode, but I'm confirm. 

It will then cycle through all the motor and airflow settings and climate mode switching and present a code where the temperature is usually displayed

[Chris.ac]

If you want to try without waiting, this video does the steps, ignore the fact it's not same Toyota or headunit, the exact same process works.

 

Press start button twice without brake pressed ( so it didn't start) hold auto and recirculate mode button, then start vehicle. 

Everything should flash, then press the circulate button for it to run through all the tests, it will count up from 1.

 

Once it cycles to 1 again, press the auto button and your error codes will be displayed

 

 

[Chris.ac]

The clean icon is just part of the climate controls, every 10 mins it will activate the Ioniser to curb the door, clean just means it completed that cycle. 

 

Here is a helpful PowerPoint doing so the electrical systems in your 20 series. 

 

https://slideplayer.com/slide/10248235/

[Rojie]

1 hour ago, Chris.ac said:

The clean icon is just part of the climate controls, every 10 mins it will activate the Ioniser to curb the door, clean just means it completed that cycle. 

 

Here is a helpful PowerPoint doing so the electrical systems in your 20 series. 

 

https://slideplayer.com/slide/10248235/

 

Hello Chris,

 

As far as I am aware my air con is working fine.

 

However, I was left wondering if you are aware of a similar (test) technique on the 10 series.

[Rojie]

45 minutes ago, Asajj said:

Hi all. I have a 2008 Vellfire 3.5 v6. I bought from a dealer near London last year and I’m the first UK owner. I love it! 

Sadly the Aircon hasn’t worked since I bought it and stupidly I presumed it just needed regassing.

 

I recently took it to a generic nationwide garage who did this, but they tell me it’s still not working and their equipment won’t speak to Japanese cars. They advised I need a diagnostic. I have rang loads of local garages - all neg. Eventually I have found one about an hour away who can do a diagnostic for around £90. 

So before I take the trip and spend the money, is there anything I can do to check at home? 

We’ve looked at the fuse in the engine bay- fine. Audio and all other dash/instrument controls work. Engine sound changes when Aircon button is pressed (after a few seconds lights starts to flash). 

I don’t have a book so don’t know what all the display things mean. 
Eg can anyone team me what ‘clean’ means next to the clock?? I read a dirty cabin filter can affect Aircon. 
Thanks in advance and sorry for stupid questions. 

 

So sorry Asajj,

 

I forgot to welcome you to the Forum.

[Chris.ac]

40 minutes ago, Rojie said:

 

Hello Chris,

 

As far as I am aware my air con if working fine.

 

However, I was left wondering if you are aware of a similar (test) technique on the 10 series.

I'm pretty sure it's the same process, this seems to be a Toyota standard from early 2000s

[Asajj]

Wow, thanks so much everyone. We’ll go do some investigating based on your advice and report back. 

[Asajj]

Error code 22 🤨

[Rojie]

59 minutes ago, Asajj said:

Error code 22 🤨

 

Hi Asajj,

 

Unfortunately, this means absolutely nothing to me; but may be meaningful to an A/C engineer

 

B1422/22*1 Compressor Lock Sensor Circuit - Compressor and magnetic clutch - Compressor and magnetic clutch drive belt - Compressor lock sensor - Wire harness between compressor lock sensor and air conditioning amplifier - Air conditioning amplifier -

 

*1: DTC B1422/22 (Compressor Lock Sensor Circuit) is indicated only for a currently occurring malfunction for 2GRFE. 

 

Do you have the 2GRFE engine ?

[Asajj]

Yeah this is starting to get into unknowns for my level of knowledge but I do have the 2GRFE engine 

[Chris.ac]

I have the same error code. I've not gone any further to investigate.

There is a section on the ac in the maintenance manual, but the website is offline at moment. 

I'll try and post it here later.

 

I've also gone back and corrected the typos, using a mobile keyboard and it likes to auto correct incorrectly.