Disable AC control screen

[nstefano]

Hi, I’ve Junson V1 head unit and I was wondering if there is an option to disable the AC control screen that show when I change the temperature?

 

[TorstenH]

There should be a setting under canbus setup in factory settings.
Use code 8888 or 8878 to enter factory settings.
Should look more or less like on the picture.

 

[nstefano]

I couldn’t find such settings in CAN type options

 

[TorstenH]

Maybe you can find it under other. But please enter with code 8878. If you use 8888 you don't get all options.

 

[nstefano]

Maybe you can find it under other. But please enter with code 8878. If you use 8888 you don't get all options.

Nice, I did not know that 8878 gives more options. However still can’t find the right one for the ac. I’ve disabled AC option one, but it still shows.

 

[nstefano]

This are all the available menus

 

[TorstenH]

This are all the available menusView attachment 5369617

You could try to identify the activity which shows the AC interface and the disable it via ADB:


- Install Remote ADB Shell on your Phone from Google PlayStore
- Open WiFi Hotspot on your Phone and connect the HU
- Start Remote ADB Shell and Execute the following command to get SU access:

 su @#zxcvbnmasdfghjklqwertyuiop1234567890,.

- Open the AC interface on the head unit and Execute the command to identify the activity:

 dumpsys activity | grep "mCurrentFocus"

Now you should get the Application name (MainUI) and the activity name which should contain something with "AC".

There are a lot of commands available to get the current activity. Another option could be to use

dumpsys activity recents

 

[TorstenH]

Command to disable the activity looks like this whereby the parameter after the slash is the name of the activity:

 pm disable com.ts.MainUI/com.ts.main...

 

[nstefano]

Can’t connect the adb shell

View attachment 5369641

 

[nstefano]

Can’t connect the adb shellView attachment 5369639View attachment 5369641

Tried 128.0.0.1 also

 

[nstefano]

Do I need to do something else on the HU except to be connected on the phone hotspot?

 

[TorstenH]

Tried 128.0.0.1 also

Check in the WiFi settings of the head unit which IP it has. There are also Apps in PlayStore to show current IP.
E.g. my phone gives the head unit the IP 192.168.43.155

 

[TorstenH]

Can’t connect the adb shellView attachment 5369639View attachment 5369641

127.0.0.1 ist always localhost that means the device itself (and in your case your phone). This is also valid for Windows, Mac and Linux. Just in case you ever need that for another project ;-)

 

[nstefano]

I’ve found it…it was CanACActivity, but since I’ve disabled it, the HU started to responses really bad when I change the temp.

 

[nstefano]

And now if I try to enable it again it says

 

[nstefano]

And here was the log that I used to locate the activity

 

[TorstenH]

And now if I try to enable it again it saysView attachment 5369739

You are not root user and overseen the su command with the cryptic signs behind it. If su command was successful the prompt will change from dollar sign to #.

 

[nstefano]

Oh ok, so I’ve to use the first code again in order to get the needed root level

 

[nstefano]

However it is strange why everything freezes when I’ve disabled it and use the ac control. It’s like there are additional settings that I need to change.

 

[TorstenH]

However it is strange why everything freezes when I’ve disabled it and use the ac control. It’s like there are additional settings that I need to change.

Disable and then reboot? My hope was mainui just tries to execute but skips because it's not allowed to execute