Struggling To Find Wiring Diagram For Motorised Dash Screen

[Totally Tech IT]

Hi All,

I've recently bought a motorised screen mount (Part Number: 55404-20330) See this link for part catalogue

I dont have the loom installed in my car and I cannot for the life of me find the wiring guide to show me which pins are +, illumination and gnd.

Can anyone point me in the right direction please?

[Totally Tech IT]

Can anyone help please?

[alan333]

Use a 12v tester to find out. I often use the outer of the cigarette lighter as earth, then put the other end on your pins and see when they become live. Once you find a live one you can use it to find your earth one. Beware sometimes a wire can appear to be earth but becomes live when you switch something on, so do your checks with various things switched on.

[Konrad C]

I cannot help to the extent you want, but I suggest you contact some of the online Breaker yards like North West Carparts, and see if you get the loom you require.

I notice that wire 82141B is shown as not applicable but seems to have plugs at all ends. Did you get that cable with the display. If so then it is the loom after that, you will need.

[Devon Aygo]

Access to Toyota's repair manuals, wiring diagrams & bulletin can be found at www.toyota-tech.eu for a small fee

[Totally Tech IT]

I cannot help to the extent you want, but I suggest you contact some of the online Breaker yards like North West Carparts, and see if you get the loom you require.

I notice that wire 82141B is shown as not applicable but seems to have plugs at all ends. Did you get that cable with the display. If so then it is the loom after that, you will need.

Trouble is, I can't work out which loom I'm missing, and by the looks of things this wasn't installed in UK cars, just European (I may be wrong though)...

this is the screen I've now got, I'm removing the screen and I simply need to just power the motor and switches

Use a 12v tester to find out. I often use the outer of the cigarette lighter as earth, then put the other end on your pins and see when they become live. Once you find a live one you can use it to find your earth one. Beware sometimes a wire can appear to be earth but becomes live when you switch something on, so do your checks with various things switched on.

Can I do this safely without running the risk of blowing something? I have a desk mounted 12v power supply and currently the screen mount is on the desk but I didnt just want to throw 12v and ground aimlessly as I was sure I'd blow something :(

Access to Toyota's repair manuals, wiring diagrams & bulletin can be found at www.toyota-tech.eu for a small fee

I have found some installation info etc but cannot find the wiring info, All I need to know is which pins are 12v, illumination and ground - then I can get it installed :)

I've sent some of the things I've found to a couple of electrical friends but its just not clear - or I just cannot follow it properly...

[alan333]

Use a 12v tester to find out.

Can I do this safely without running the risk of blowing something?

Probably not. Sorry I mistakenly thought you were looking for power feeds etc at the car end. I wouldn't use this method on the actual unit.

[avensisd4d786]

I may be wrong here but I think the reason why you do not have that loom is that screen was only fitted to pre face lifts as the face lift got a storage box where that goes.

the facelift got a screen where the preface lift cd/radio/tape player is.

[Totally Tech IT]

I cannot help to the extent you want, but I suggest you contact some of the online Breaker yards like North West Carparts, and see if you get the loom you require.

I notice that wire 82141B is shown as not applicable but seems to have plugs at all ends. Did you get that cable with the display. If so then it is the loom after that, you will need.

Hi Konrad C,

I'm still looking at doing this, its driving me insane not being able to work out the wiring!

The cable 82141B is fitted and it controls the switches and motor etc, its plugged in to the circuit board. If you look at the picture I posted earlier it shows the circuit board with the large white connections.

On the top right there is a small connector (CN4) which is what 82141B plugs in to - CN3 is an earth connection and CN2 is an lcd output to the screen. I need to work out what pins on the large sockets (CN1 and CN6) are power - I'm assuming that if I can put 12v to the correct pin it will power the motor to get the mechanism going! :)

What a nightmare!

[Totally Tech IT]

The controller that I'm trying to locate the wiring loom pinout for is 55313-20060 which is classed as CIRCUIT, DOOR CONTROL UNIT on loads of websites, but I cannot work out why it is called a Door Control Unit when it powers the navigation unit...

You can see it shown here as 55313B:

[Andrysh]

Hi Drew,

I am in exactly the same situation as you were. Have you find the 12V input pins on connectors? Is the dash mount already working perfectly?

Thank you very much,

Andras

[Totally Tech IT]

Hi Andras,

I did actually find the wiring! I've got it all written down at home in a file so when I get back home tonight I'll grab it for you and let you know - I managed to get the illumination to come on and the motor to open and close it :) I remember it was only 3 or 4 of the pins on the larger block - I think the two fat pins were the +/- and one or two of the little ones (on the other end of the block) were the illumination. 

Like I say, I'll grab the details later and let you know which pins work :)

[Andrysh]

Awesome! I couldn't ask for more!  You know how hard it is to find the right pins and what would it meant to you if somebody jump out immediately with the solution  

Thank you. You made my day!

By the way probably it is because Monday is my 40th birthday and I wanted to make this change for this anniversary as a present :-)

[Totally Tech IT]

On 08/07/2016 at 11:43 AM, Andrysh said:

Awesome! I couldn't ask for more!  You know how hard it is to find the right pins and what would it meant to you if somebody jump out immediately with the solution  

Thank you. You made my day!

By the way probably it is because Monday is my 40th birthday and I wanted to make this change for this anniversary as a present :-)

Happy Birthday for Monday!

Sorry I didn't reply last night, I didn't get home until late and totally forgot, however I found it for you :)

 

Pin 1, 13, 14 are all 12v

Pin 2, 25 are gnd

 

Have a look here - I managed to find a guide in Russian : http://www.avensis-club.ru/forum/viewtopic.php?t=10171

I used google to translate to english if that helps :)
https://translate.google.com/translate?hl=en&sl=ru&tl=en&u=http%3A%2F%2Fwww.avensis-club.ru%2Fforum%2Fviewtopic.php%3Ft%3D10171

[Konrad C]

Looking through the earlier posts on this subject, one from avensisd4d768 stood out. The car is lowest trim and face lift. The good thing is the upgrade can be done, but it has to be worth it. For my car it would involve the changing the head unit, modifying the cabling, adding the reverse camera, and the SatNav aerial. I just added the USB/SD/Bluetooth adaptor. Plug and play.

I do like these upgrades.

 

[Totally Tech IT]

3 hours ago, Konrad C said:

Looking through the earlier posts on this subject, one from avensisd4d768 stood out. The car is lowest trim and face lift. The good thing is the upgrade can be done, but it has to be worth it. For my car it would involve the changing the head unit, modifying the cabling, adding the reverse camera, and the SatNav aerial. I just added the USB/SD/Bluetooth adaptor. Plug and play.

I do like these upgrades.

 

I agree, I did something similar, replaced my headunit with a single din bluetooth unit which lets me use it as a car kit, stream music from my phone etc.. So much easier - but the reason I want the screen mount is I'm fitting an android tablet inside it rather than fitting the toyota system. It allows me to have all the functions of a £1k-£2k system for around £200 lol.

Its amazing the gear you can get to connect to android too lol, I've got a reverse camera, and then a sat nav etc, plus I can link it to run my music too lol :)

[Andrysh]

Dear Drew,

thank you very much for the greetings and the correct pinout information.

I will try it asap as I arrive back home from Lake Balaton. And I will feedback and send pictures as it is ready.

MANY THANKS!!!!

Andras

[Andrysh]

Dear Drew,

how did you overcome the problem that the Nexus screen is a bit bigger than the GPS frame? It looks like I cannot push the bottom maind buttons (Menu/Home/Back) or I cannot use the ribbon at the top. I would not really like to modify the frame.

How did you handle this issue?

Thank you,

Andras