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Has anyone done a CarPlay retrofit / Headunit replacement for 991.1

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Old 11-20-2020, 04:52 PM
  #1021  
RYE
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Originally Posted by c615586
This is my Joyeauto reset/reboot issue in action. Happens about every 3-6 minutes.
That's not a reboot, looks like a lose connection. Check all connectors including ribbon cables to the screen inside PCM.
Old 11-20-2020, 04:55 PM
  #1022  
c615586
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Originally Posted by RYE
That's not a reboot, looks like a lose connection. Check all connectors including ribbon cables to the screen inside PCM.
I've been dreading having to do that but it might have to be my next step.

I would have assumed a loose connection would be something where I'd lose CarPlay if the car went over a bump or something. This happens when it's sitting still--in this case in a grocery store parking lot.
Has anyone else seen something similar that could be traced to a loose connection situation?
Old 11-20-2020, 05:37 PM
  #1023  
pfbz
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Definitely not a reboot... Something loose inside the PCM.
Old 11-20-2020, 06:26 PM
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c615586
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Originally Posted by pfbz
Definitely not a reboot... Something loose inside the PCM.
Blargh... ok. Looks like I have a project for this weekend.

Thanks for the input, though.
Old 11-20-2020, 11:08 PM
  #1025  
Terry Zheng
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Originally Posted by zavodnik1
Hi, I had exactly the same issue. When I turned Carplay on, my PCM shuts down, then start again and shuts down again every minute or so. With Joyeauto off , PCM works flawlessly. I have sent unit back to Joyeauto and today I've received replacement. I hope it will works this time. But I have a question. What is the "Key in" two pin wiring for? It's not Joyeauto wiring diagram.


Regardness of it, it is only used when you can't swtich to carplay system
Old 11-20-2020, 11:12 PM
  #1026  
Terry Zheng
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Originally Posted by c615586
This is my Joyeauto reset/reboot issue in action. Happens about every 3-6 minutes.
You can try turn of TV DVD DVR FRONTVIEW in Setup first
Old 11-20-2020, 11:14 PM
  #1027  
Terry Zheng
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try first before open PCM
Old 11-20-2020, 11:51 PM
  #1028  
c615586
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Originally Posted by Terry Zheng
You can try turn of TV DVD DVR FRONTVIEW in Setup first
Will definitely give this a try first!
Old 11-21-2020, 06:34 PM
  #1029  
c615586
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Originally Posted by Terry Zheng
try first before open PCM
Tried it, but no success. I already had the correct settings. Will pull the PCM and check connections tomorrow.
Old 11-22-2020, 01:30 PM
  #1030  
CarlJ
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Anyone have issues with electrical noise/whine with the JOYEAUTO kit? It’s like it has a bad ground, but all the grounds are bundled in the wiring harness. I don’t see any connection issues.
Old 11-22-2020, 10:45 PM
  #1031  
Sidvicious7
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Originally Posted by CarlJ
Anyone have issues with electrical noise/whine with the JOYEAUTO kit? It’s like it has a bad ground, but all the grounds are bundled in the wiring harness. I don’t see any connection issues.
Don’t put too much faith in the wiring connections on the supplied harness. Inspect your harness and verify you have solid bonds where common wires are joined, black/grounding wires are good examples. - Always use a chassis ground and try to minimize the length of the wire. Porsche ground wires are colored brown on the 991. Also verify your harness mates properly to the PCM and your aftermarket to PCM male to female connectors.
Old 11-25-2020, 01:16 AM
  #1032  
UTVols86
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Great tips everyone!

I just finished a lengthy install and wow that was not a fun time.

im currently stuck on the final piece of throwing the PCM back into the dash (981 BS). I can’t get it all back in and it always remains about 1 inch out from home no matter how I configure the cables. The joyeauto unit is tucked under the steering column.

Any and all advice welcome as I am growing frustrated. I know this is a 991 forum but I’m assuming similar space behind the PCM.

-Mark
Old 11-25-2020, 09:41 AM
  #1033  
CarlJ
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Originally Posted by UTVols86
Great tips everyone!

I just finished a lengthy install and wow that was not a fun time.

im currently stuck on the final piece of throwing the PCM back into the dash (981 BS). I can’t get it all back in and it always remains about 1 inch out from home no matter how I configure the cables. The joyeauto unit is tucked under the steering column.

Any and all advice welcome as I am growing frustrated. I know this is a 991 forum but I’m assuming similar space behind the PCM.

-Mark
Same problem, it’s just a tight fit. That big cable connector is a bear. Try tucking some of the cabling down the slot in the back. Put the unit it as far as you can while still getting your hand back there. It’s just a lot of crap that wasn’t meant to be there... it will eventually fit.
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Old 11-25-2020, 11:13 PM
  #1034  
SF Neunelfer
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If you take off the center lower passenger side tunnel cover, you should be able to see the cables enough to pull some of it down. When I did this on my 991, I was able to see some of the wires coming down ion the middle and help take up some of the slack. Other than that, you could try to loop the harness, in different position to try and fit it back in.
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Old 11-26-2020, 12:01 AM
  #1035  
UTVols86
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Thanks for the tips, everyone!

I decided to unplug all connections to the back of the PCM and sort it in a more straight line. Went in after a couple attempts that way.

Finished up the backup camera install today too and that was it’s own bit of battles. I couldn’t really find very well defined instructions for it so I kinda went my own way.

Now I’ve got CarPlay and a backup camera that my wife will really like.

I am open to sharing tips if anyone is interested.

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