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deekay



Member Since: 24 Jul 2024
Location: NY
Posts: 11
United States 
Any ideas on what else could be causing the screen to be blank? I installed the 11.4" screen, it stayed blank, so I reinstalled the 10.1" screen to get back to baseline and now that is blank as well. I checked fuses 48 and 51 and they seem to be fine. Do I just double-lock the car and pray that it revives itself tomorrow?
Post #1040929 24th Jul 2024 11:22pm
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mmbanf



Member Since: 16 Mar 2021
Location: Milano
Posts: 155
Italy 
have you modified the ccf file? as already written, if you install a brand new 11.4 screen, it will not work, because it must be programmed. the 10 screen, when you go back to the original ccf it must work for sure, otherwise there is a problem with the connector or the fuses, I advise you to take a tester and test the presence of power and ground on the connector. When carrying out work on the electrical system, always disconnect the car battery.

Marco
Post #1040937 25th Jul 2024 7:22am
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mmbanf



Member Since: 16 Mar 2021
Location: Milano
Posts: 155
Italy 

Click image to enlarge
in my case, used 11.4 screen, everything worked perfectly. Thanks Clark Thumbs Up Thumbs Up Thumbs Up
Post #1040939 25th Jul 2024 7:35am
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Dannymm



Member Since: 28 Jun 2024
Location: Wiltshire
Posts: 17
United Kingdom 
deekay wrote:
Any ideas on what else could be causing the screen to be blank? I installed the 11.4" screen, it stayed blank, so I reinstalled the 10.1" screen to get back to baseline and now that is blank as well. I checked fuses 48 and 51 and they seem to be fine. Do I just double-lock the car and pray that it revives itself tomorrow?


Can you post a photo of the cable you have made?
Post #1040944 25th Jul 2024 8:54am
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mmbanf



Member Since: 16 Mar 2021
Location: Milano
Posts: 155
Italy 
hi, now I've closed everything, and I don't have any photos. However, I followed the published wiring diagram and used the connectors recommended by Clark. If you want, send me a photo of your cables and I'll check if they're ok.
Post #1040945 25th Jul 2024 8:58am
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Dannymm



Member Since: 28 Jun 2024
Location: Wiltshire
Posts: 17
United Kingdom 
I was asking deekay for a photo of his cable so we could maybe check it for him.

The only issue I had with my custom cable is I had to swap the CAN bus wires even though I checked they were correct so many times!
Post #1040946 25th Jul 2024 9:01am
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mmbanf



Member Since: 16 Mar 2021
Location: Milano
Posts: 155
Italy 
Thumbs Up on the diagram it is easy to confuse the colors of the can wires, because they are crossed
Post #1040947 25th Jul 2024 9:08am
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deekay



Member Since: 24 Jul 2024
Location: NY
Posts: 11
United States 
I was able to get the 10.1" screen working again last night after doing a service reset with the GAP tool, double locking, and waiting a bit before retrying (possibly the most important step).

Now this morning, I wired up the 11.4" screen again, repeated the steps above, and still a blank screen so far. This is what the wiring looks like. Perhaps I have something mixed up?



Click image to enlarge
[/img]
Post #1040965 25th Jul 2024 2:39pm
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Dannymm



Member Since: 28 Jun 2024
Location: Wiltshire
Posts: 17
United Kingdom 
It looks correct, have you tried swapping the can wires? (pins 3 and 9) of the grey connector
Post #1040969 25th Jul 2024 3:16pm
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deekay



Member Since: 24 Jul 2024
Location: NY
Posts: 11
United States 
I'll give it a shot right now.
Post #1040971 25th Jul 2024 3:30pm
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mmbanf



Member Since: 16 Mar 2021
Location: Milano
Posts: 155
Italy 
deekay wrote:
I was able to get the 10.1" screen working again last night after doing a service reset with the GAP tool, double locking, and waiting a bit before retrying (possibly the most important step).

Now this morning, I wired up the 11.4" screen again, repeated the steps above, and still a blank screen so far. This is what the wiring looks like. Perhaps I have something mixed up?



Click image to enlarge
[/img]


The can wires are reversed the gray green goes on the connector at pin 3.
Post #1040976 25th Jul 2024 5:33pm
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mmbanf



Member Since: 16 Mar 2021
Location: Milano
Posts: 155
Italy 
Violet green wire on pin 3, (not gray green…sorry)
Post #1040982 25th Jul 2024 6:43pm
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deekay



Member Since: 24 Jul 2024
Location: NY
Posts: 11
United States 
Ok I swapped the pins for the two CAN wires (at the small black connector, not the grey connector; that should be the same, right?). I started the car, did a Pivi reset, did a service reset, and then double locked the car. I'll check it in an hour or so to see if that did the trick.

One thing I noticed before stepping out of the car was that "circuit open" fault was recorded. Not sure if this is just a transient fault that can be ignored, or if it means the harness and/or display are broken?


Click image to enlarge

Click image to enlarge
Post #1040983 25th Jul 2024 6:46pm
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mmbanf



Member Since: 16 Mar 2021
Location: Milano
Posts: 155
Italy 
hi Deekay, sorry, I was in the car and I misread the connector, everything was correct, I was wrong, so the layout of the can pins was right, now it's wrong. open circuit means that 12 volt power is not arriving, so two possibilities: 1 the 12 volt pin does not fit well in the connector, 2 a fuse has blown. test with a tester if you have power and ground.
Post #1040984 25th Jul 2024 6:55pm
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deekay



Member Since: 24 Jul 2024
Location: NY
Posts: 11
United States 
No worries. I just swapped the pins back and I'll see if the open circuit fault comes back. Fuses looked fine.
Post #1040985 25th Jul 2024 7:11pm
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