Database Users

Only Key 1 on my HU

I bought a unit recently identified as Android 8802 https://www.ebay.com/itm/7-2-Din-Qu...e=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2648 . It only has a Key 1 wire. My car, '03 Volvo XC70, has 2 CANBUS wires in the harness, CanL, CanH. I did some reading and found that sometimes you can ground 1 of the wires and just use the other. I tried this both ways, ground L and connect H to Key 1 and, ground H and connect L to Key 1.
One of those combinations was BAD, no lights on dash and major oh sh!# moment. One of the combinations let me set the buttons for vol up/down and track forward/back BUT, after setting the last button and exiting the setup software whatever was the last function I setup would act like I was pressing the button continuously. Like if it was vol up it would just keep going up, up, up, up, up etc.
Has anyone else dealt with a HU that just had Key 1 and 2 BUS lines?

I think you would want/need a canbus adapter. I found this: https://volvoforums.com/forum/audio...ermarket-steering-wheel-radio-controls-57081/

Thanks for the link/info. I'm seeing a lot of "if" and "maybe" and the like. Nothing that is identified as The solution. I'd much rather try to understand how my unit, which has only 1 SWC wire (Key 1) is meant to be connected to cars to make it work.
I was thinking about joining both CanL and CanH to the Key 1 wire. I'm no EE but my assumption is that if they are both putting out variable voltages and resistances (one "low" and one "high") that combining them would just be sending the entire range of signals through the Key 1 wire to my HU for decoding by the on board s/w. Anyone see a red flag on that?

treojoew said:
Thanks for the link/info. I'm seeing a lot of "if" and "maybe" and the like. Nothing that is identified as The solution. I'd much rather try to understand how my unit, which has only 1 SWC wire (Key 1) is meant to be connected to cars to make it work.
I was thinking about joining both CanL and CanH to the Key 1 wire. I'm no EE but my assumption is that if they are both putting out variable voltages and resistances (one "low" and one "high") that combining them would just be sending the entire range of signals through the Key 1 wire to my HU for decoding by the on board s/w. Anyone see a red flag on that?
Click to expand...
Click to collapse
Generally canbus is sending out a digital signal. Headunits are expecting an analogue voltage or resistance between key1 and ground. A key2 wire just allows a second analogue signal to be used in addition (I use a key1 +ground and key2+ground in our mazda5 as it has *resistive* steering wheel controls with two different paths - one for most controls and one for just the "phone" button which in the oem set-up only routes to the bluetooth box). I am surprised that canbus signals on their own can ever function on a headnit that is expecting resistive/analogue voltage inputs. I would never attempt to hook it up, but instead would source a canbus adapter that will convert the digital signal to an analogue output. This is exactly what I have on our Saab 9-3: canbus to Connects2 adapter to chinese head unit, where the connects2 box output is connected to the headunit key1 and ground. It is to note that some chinese headunits come with a canbus box built-in, but for a specific vehicle, and in that case the canbus wires would be hooked up directly.

Ahh. That is a huge distinction that I had not heard anywhere else. The fact that the CanBus is digital and the HU is analog. Had you not stated that you also have a Chinese HU (assuming Android) I would have thought you were referring a traditional HU. Why is the Android unit not designed for the digital signal?
Are you certain about all of this? Is this a true statement, "The Chinese Android HU's are designed only to connect to SWC that are analog, NOT the digital CanBus lines"?

treojoew said:
Ahh. That is a huge distinction that I had not heard anywhere else. The fact that the CanBus is digital and the HU is analog. Had you not stated that you also have a Chinese HU (assuming Android) I would have thought you were referring a traditional HU. Why is the Android unit not designed for the digital signal?
Are you certain about all of this? Is this a true statement, "The Chinese Android HU's are designed only to connect to SWC that are analog, NOT the digital CanBus lines"?
Click to expand...
Click to collapse
As I stated above vehicle specific Chinese Android headunits will come with a canbus adapter (if required). All universal head units that I have seen (meaning Android Chinese head units) are expecting analog inputs. If you look at the advertising for joying or others on aliexpress it explicitly states that you need a canbus adpater if your vehicle outputs (in the harness for the radio) canbus signals. Be aware that the canbus signals that transmit steering wheel control information are not standard, each vehicle manufacturer is free to use whatever signal chain they want for the controls as they are also the "supplier" of the radio. That is why they have vehicle specific canbus adpaters (where the aftermarket canbus adpater manufacturer has "sniffed" that vehicles canbus lines to learn the codes), or universal ones that either learn thru button presses and/or are coded with multiple vehicles. I advise you to contact axxess (if you are in N/A) or connects2 (if you are in the EU) and talk to them about what you need. I have been in contact with both those companies over the years and both should be quite helpful. PAC is another option, but I have no experience with them.
---edit---
All that being said I did a little more googling on your vehicle and it seems it is a problematic one - connects2 shows using the axxess adapter, but only for later years than yours and axxess states that they have no info on your model year. All the more reason to contact axxess, but in the link in my first response didn't someone get your it working with your vehicle and year?
---more edit---
Reading thru that linked page it is definitely a problematic vehicle - it seems like this may be your best bet but more research is definitely required: https://www.crutchfield.com/p_249SWRVL54/CRUX-SWRVL-54-Wiring-Interface.html

Great info. Thanks for your time and your advice.

Steering wheel control problem between Autoradio 8227L and Toyota Yaris II series

Hi everyone, I hope to be writing in the appropriate section.
I bought an 8227L android car radio:
- http://imageupper.com/s12/1/6/M1568803747176376_8.jpg
- http://imageupper.com/s12/1/6/M1568803747176376_6.jpg
And I have a Toyota Yaris II series:
- http://imageupper.com/s12/1/6/M1568803747176376_7.jpg
This morning I successfully mounted the 8227L stereo in my car
- http://imageupper.com/s12/1/6/M1568803747176376_5.jpg
and everything works fine except the steering wheel controls.
The old original car radio (where steering wheel controls worked) was so connected:
- http://imageupper.com/s12/1/6/M1568803747176376_4.jpg
And when mounting the new autoradio 8227L, I just inserted the cables in the appropriate adapters.
The fact is that as soon as I enter the steering wheel configuration menu, I press START and select a command to associate with a physical steering wheel button, I get an error:
- http://imageupper.com/s12/1/6/M1568803747176376_3.jpg
even trying to reboot:
- http://imageupper.com/s12/1/6/M1568803747176376_2.jpg
- http://imageupper.com/s12/1/6/M1568803747176376_1.jpg
I still get the same error.
Can u help me in some way? Thank u all in advance!

As a first step, I would put a voltmeter onto the sense wires while pressing each of steering wheel buttons- to confirm that different voltages are available for the head unit to learn
This wil prove or otherwise that the wiring is in order.

Hi Pxdev,
First of all thank you very much for your attention.
At the moment I do not have the possibility to use a voltmeter, however I am sure that the steering wheel controls work (tested up to a few hours before the installation of the new radio) and also the installation of the new radio has simply consisted in disconnecting the 3 connectors ( http://imageupper.com/s12/1/6/M1568803747176376_4.jpg the blue and the two whites) visible in the picture and insert them in the appropriate adapters of the new car radio and insert a single connector in the special housing and everything worked, except, of course, for the steering wheel controls. Is there anything else I could try to do? Many thanks in advance.

Hi,
Have you bought it with the Canbus and cables for your car? I have the exact same unit and the steering wheel works well.

I get the same error , found a video saying ground one wire to radio ground and any one key wire ground radio but doesn't work. If anybody has any solution or troubleshoot guide please let me know .

Checked voltage , voltage from headunit around 3.5v , checked resisitance from each key shows different value for each key. Now what to do?

Did you find a solution to your problem as I'm having the same problem with mine. Same head unit with a Raise can bus installed. The steering wheel controls worked fine when I first bought the car but I decided to delete some of the unused apps and since then the steering wheel controls don't work. I can't even remember the name of the app I deleted. Any help would be grateful.

Android Head Unit SC9853 - Nissan connections unsure...

SC9853 8-core Intel Airmont with 64GB / 4GB ram... bought it online... supposed to be suitable for my car model, but I'm a bit unsure, and the Chinese seller did not provide much help yet... no instructions nor manual nor wiring diagram...:
my original car: Nissan Teana 250XV from 2010 (model J32, matches the Maxima A35 dashboard/equipment)
So the top LCD display shows the CD number / Radio station / dual Aircon temperature setting.
The backside Radio/CD player:
(deducted the connections from a Google image from Nissan Frontier)
the dark gray is the Antenna radio, the small white should be the Steering controls, the bottom big connector should be for the AC (should not touch), and the remaining plug is the power/speakers wire.
The 2 connections that went into the top LCD display:
I'm assuming the black one goes into the black connector of the Android harness:
I found similar connections on another post, so I deducted:
It came with 2 USB cables, 1 is 4 pin, the other is 6 pin connector... 1st thought they go at bottom in middle, but from the other post it was for MIC-in ?
it should come with instructions and a wiring diagram?!
Can somebody help with explaining what's what?
it seems the harness has a male and female connector, so the female is to connect to the car cable, and the male goes back into the CD/Radio? so the CD player can still function, it's audio should go through an Aux cable?
The antenna cable has not suitable connection, so I suppose I can keep using the stock radio? there's a cut blue wire on the harness labeled Auto ANT, so I could connect this one to the car cable, though would need to figure out how, looks like it has 2 wires (below is for the newer version model L33, but Radio ANT connection looks identical):
Assuming only 1 of the 2 LCD connections need to be used, one of them is black, so I'm assuming this one goes on the black one of the harness...
Sure hope I can sort this out... biggest issue is the head unit seems to be too long to the back, so I have not been able to reinstall, it sticks out... if I install the GPS it sticks out even further, without the GPS this is how far I get....:
the seller claims it can be installed, they did it before with this kind of unit... so shall try again, but to me it looks like I'm hitting the back of the compartment...
Freaking out as have spent 380 USD on it and it took 2 months to deliver (due to Chinese new year / COVID-19)....
Any help much appreciated, thanks a lot in advance!

If the unit has been special been produced for your car, it should be plug´n play.
All connectors are coded. You are not able to misuse any of them.... So what is your problem now???

Well for one besides the unit turning on nothing works: no sound, also the old radio not working, only short beeps when pressing load/eject CD.
To the Head unit I only connected the main power cable, this one also holds the speakers? So should have sound?
Tried setting the steering wheel controls... Also no luck..
Will try to also connect the brown-blue/white cable which has pin count matching bottom left socket below the RCA socket.
Issue may be this Thailand Teana, steering wheel at right side, most units sold for left side...
You mean coded as in wire colors should match? (Only a few cables are labeled, the sockets are not)
Thanks

ok the seller now confirms these are the connections:
the not marked left bottom and right top supposedly have no function...
Only thing left to try is to disconnect the original car stereo plug, so the Android head unit is connected directly to the car cable without the car Radio connected... but that means the original car radio/cd player is not usable...
could also try to use the AUX cable from the Head Unit's RCA connections and connect it to the head jack of the Radio, suppose should get audio then?
will check the wire colors, suppose they should match the harness wire colors? if the unit would actually physically fit my car could correct the socket wiring so it may work for my car?
(I'm assuming a left hand drive car may have different wiring vs. right hand drive car? as nothing works, except for the screen getting power (no sound, no steering wheel control))

@GregToR
I wrote:
rigattoni said:
All connectors are coded. You are not able to misuse any of them....
Click to expand...
Click to collapse
That means that the connectors of the cable tree only match to one single hole in the unit.
That has nothing to do with colors of the cables itself. They most probably don´t match.
Just do it, or drive to someone who is able to help you.

rigattoni said:
@GregToR
I wrote:
That means that the connectors of the cable tree only match to one single hole in the unit.
That has nothing to do with colors of the cables itself. They most probably don´t match.
Just do it, or drive to someone who is able to help you.
Click to expand...
Click to collapse
yes, you are right, each cable has a different unique fit, not interchangeable, but for the AC cable there are 2 wires it both sockets going to 2 pins, but only one of them matches with the harness connector (so the other wire has no counterpart = dead end due to on different pins), so possible wrong wiring in the harness?
if it's truly plug and play, I should have at least sound, I have no sound... so something's wrong... or does the software need configuration to enable sound?
for the steering wheel controls there's a menu to configure the buttons, but nothing happens, there is however a setting to change the impedance, maybe should try that next.
what about the Canbox?
its purpose is normally for it to act like it would be the car, what's its role here? why is it needed if it's installed in the car? I read online normally it's used to diagnose without the need of the physical car to be present.

The CAN-Box is most necessary part in the set up.
It provides Ignition, power for the amp and the possibility to use the steering wheel buttons.
I would say that you should drive to a car repair shop to get it built in.

Do you have a link for the unit?

Seems seller may not know his own device:
Looks like mine, so the cable I didn't connect could be the CAN input.
Will try later on
Seller wants me to go to a shop where they'll cut out a part of my car to make it fit... Should I? Rather keep everything original....
Says this TS9 always is bigger size for heat disapation...
This is the link where I bought it:
ลองเข้ามาดูสินค้า เครื่องเสียงรถยนต์ MP5 Player 10.1 นิ้ว Android 9.0 รถยนต์ Nissan Teana 2008 2009 2011 2012 BT วิทยุ GPS DSP Carplay ลดราคา 10% เหลือ ฿3,645 เท่านั้น! ซื้อได้ในแอป Shopee ตอนนี้เลย! https://shopee.co.th/product/214907970/3213687141?v=6f0&smtt=0.0.5

There is too many of these units out there from sellers that don't give enough information with their products. It leaves the end user scratching their head all too often. I purchased a very similar unit to this. Same thing, no support, no instructions, no manual etc etc.
Did you get it to a shop and were they able to sort?

Noobtrube said:
There is too many of these units out there from sellers that don't give enough information with their products. It leaves the end user scratching their head all too often. I purchased a very similar unit to this. Same thing, no support, no instructions, no manual etc etc.
Did you get it to a shop and were they able to sort?
Click to expand...
Click to collapse
no, I returned it, as I don't want to cut a piece out of my car, and other sellers say it should not be necessary if the correct unit is installed.
The seller thought me to go to the "Extra Settings" menu to select the right car under "Model", after which it updates the MCU accordingly. After this the only thing I got working was the AC temperature control on the screen, had to set the "left / right Peptide" differently to mirror temp setting so Dual setting matches (left and right is apparently the other way around in a left hand side driving car ("peptide" must be a bad translation as that's part of a protein...).
Is the RCA jack to AUX the only way to get sound through the car speakers? (didn't work either, never got sound... I believe the cable was jamming the original CD/Radio, which didn't function with the head unit in between)
glad I got my money back, and recently found a shop here in Bangkok that can sell and install a proper unit, pheww...

[PX5] [RK3368] [S32F0] Autotop Android Headunit - Backup Camera Trajectory Settings and Carplay / Android Auto not working

Hey guys,
I recently bought a Headunit for my Opel/Vauxhall/GM Vectra C by the brand Autotop on AliExpress.
More information here : https://www.aliexpress.com/item/33064243426.html?spm=a2g0s.9042311.0.0.4d374c4djb2lMm
It is a RK3368 unit with 4gb RAM and 64gb ROM and Carplay function. I mainly bought this unit because I expected two main features from it.
Firstly I wanted to be able to have plug and play Android Auto and the unit came with a dedicated usb cable that had the label carplay on it which only fit in one slot on the back of the radio. Sadly when I plugged my phone in nothing happened so I assume that the unit is in fact not Android Auto ready even though the description says so. Am I doing something wrong/ Do I have to set up Android Auto in some way, first?
I also want to install a backup camera and I saw in some other youtube videos that the PX5 Android 9 and Android 10 devices have something called "Extra Settings" where different parameters of the backup camera can be adjusted. One of the things that can be adjusted is the calculation of the reverse trajectory of the car which is a feature that I would really like to have.
Unfortunately my headunit only has "General Settings" "Factory Settings" and "Steering Wheel" settings. And none of these settings contain any adjustments for the backup camera.
Is there a way to "unlock" these extra settings or are they just not present in my Android Build ?
Ive attached my Build Number for further information down below
Thanks in advance for your help!

Yesterday i also got my PX5 4GB/64GB for my Vauxhall Insignia / Buick Regal 2016.
1. I am also missing the "extra settings". There are some options that might solve my other problem with my...
2. Steering wheel Buttons not working. They are working but not in the android Unit, just in my Board Computer
3. The Board Computer doenst seem to communicate with my new Android Radio ...
It was also said Plug and play and in the Describtion they had an image of exactly the same original Radio that i have/had...
I am so dissapointed but i think there is a wrong Setting in the Factory Settings (code 126) - here a Video of my Settings:
and this is waht i see, when i try to programm the steerin wheel buttons (attachement)
I think it comes all togehter on either the missing "Extra Settings" or in a wrong setting in the Factory Settings :-(

I have the same problem with steering wheel buttons. I got a PX5 4GB/64GB Erisin
Carplay dont work at moment, I am thinking to update de firmware...
https://www.aliexpress.com/item/1005001834561873.html

i found out that a cable was not connected to the steering wheel.
I had to open the plastic-frame above the steering wheel and there was a connector.
Now they work but i still can not programm each button to another function. Still grey screen.

I
DaGamma said:
i found out that a cable was not connected to the steering wheel.
I had to open the plastic-frame above the steering wheel and there was a connector.
View attachment 5216727
Now they work but i still can not programm each button to another function. Still grey screen.
Click to expand...
Click to collapse
I can to program each button in Factory settings --- key --- canbus key setting, they work for me

Can you change the language of the car? After installing the language changed to english from the tachometre. In the car app there is no setting to change language.
I dont mean the android language,

Junsun 825x_pro and Peugeot 208

Hi folks. i hope someone can help here. I have just fitted a JunSun 825x_pro (I can add more info if it's needed but it seems to be the VI model with 2gb and 32gb) to my 2014 Peugeot 208 1.4HDi. It's working fine (Even the 4g connection with a sim works) apart from one thing. I cannot find the correct canbus code for it. I have been through the list and tried everything that says Peugeot (and PSA, but nothing shows 208) to no avail. I am beginning to suspect I have either got the wrong canbus decoder or the wiring is wrong since everything else seems to be working correctly. It's kind of important to have the steering whell controls working.
I don't want to rip it all out again unless I really have to.
If anyone has any suggestions I would be grateful.

Candesta said:
Hi folks. i hope someone can help here. I have just fitted a JunSun 825x_pro (I can add more info if it's needed but it seems to be the VI model with 2gb and 32gb) to my 2014 Peugeot 208 1.4HDi. It's working fine (Even the 4g connection with a sim works) apart from one thing. I cannot find the correct canbus code for it. I have been through the list and tried everything that says Peugeot (and PSA, but nothing shows 208) to no avail. I am beginning to suspect I have either got the wrong canbus decoder or the wiring is wrong since everything else seems to be working correctly. It's kind of important to have the steering whell controls working.
I don't want to rip it all out again unless I really have to.
If anyone has any suggestions I would be grateful.
Click to expand...
Click to collapse
You could check if your car exposes the SWC as resistance matrix to the OEM harness. In this case it's best practice to bypass the CAN box for SWC because the learning function can be used and you don't have to live with hard coded mapping of key and function.
You may try to find the pinout of your original radio via Google by using model number/name of the OEM radio.

TorstenH said:
You could check if your car exposes the SWC as resistance matrix to the OEM harness. In this case it's best practice to bypass the CAN box for SWC because the learning function can be used and you don't have to live with hard coded mapping of key and function.
You may try to find the pinout of your original radio via Google by using model number/name of the OEM radio.
Click to expand...
Click to collapse
I might just have to do this, although that would be a steep learning curve!! The stereo has learning functions and I can remap the keys (once I can get them to register). I need to wait until the trim pry set arrives since the new unit is really tight and I don't want to damage it with screwdrivers etc. I can then get the canbus decoder out and see if it has anything on it to identify it in the system such as a model or anything. I also need to ensure the plug is in the right way round into the socket in the back of the unit -it has 2 wires on one end and I think the plug can go in either way!! :-(

Doh! Never mind. Important note: always check you have the connectors in the right sockets!! had the 8 pin canbus plug into a 10 pin - not connected - socket. :-(
[edit]
Even the car trip button is working now a la Peugeot head unit...