Need Connector Assignment of Onboard supply control unit for BCM upgrade and CCS on MFSW Project

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Limalex

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Good Evening to All,

I planning to retrofit upgraded BCM ( 7E0937090D PQ25 0762 H82) and CCS from steering wheel on to my T5.1

Could someone help me to get a pin assignment of a never model T6' BCM T73a, T73b and possibly the T41 connectors?

I seams there ware various slight changes so I woud like cross match with my T5.1 pin assignment.
 
Limalex said:
unfortunately that file does not includes the BCM pin assignment :(
Click to expand...
Yes it does. That’s the complete wiring schematic with every module , connector, wire and connection marked. Module J519 is the BCM, each wire will be labelled where it connects, eg T73a/10 - pin 10 on the black 73 pin plug. If your looking for MFSW connections then go to the MFSW section and follow the wires back.
 
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Limalex said:
unfortunately that file does not includes the BCM pin assignment :(
Click to expand...
Hmmm... not sure what exactly you are looking for if that didn't help? Functionality/purpose of each pin? Admittedly there is not just a single table describing that but instead the information is spread out on sections - for every variant of T6 and every module ever installed on any T6.
 
Deaky said:
Yes it does. That’s the complete wiring schematic with every module , connector, wire and connection marked. Module J519 is the BCM, each wire will be labelled where it connects, eg T73a/10 - pin 10 on the black 73 pin plug. If your looking for MFSW connections then go to the MFSW section and follow the wires back.
Click to expand...
mmi said:
Hmmm... not sure what exactly you are looking for if that didn't help? Functionality/purpose of each pin? Admittedly there is not just a single table describing that but instead the information is spread out on sections - for every variant of T6 and every module ever installed on any T6.
Click to expand...


Instead of scrolling through all the pages and making notes. I am looking for something like this.
 

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  • 1.7.3 Connector assignment of onboard supply control unit-J519-.pdf
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This has come up before and I haven't seen the pinouts table like that for the current edition.
The only bit we have in the current fitting locations is this;
1593415602978.png
 
Limalex said:
Instead of scrolling through all the pages and making notes. I am looking for something like this.
Click to expand...
Thanks for the clarification. As @Loz mentions above that kind of pin assignment table is not part of T6 wiring diagram any more.
Actually PDF-search functionality works very well in the document - to not miss any T73a assignments ;) But true, some work involved in there.
 
Loz said:
Why not post up a resource with your work as I'm sure others will appreciate it.
Click to expand...

most of my research comes from this forum. It is not an easy retrofit and the important part is also well above my knowledge. Once I done all the beck ground work needed. I will open a new thread, post my research and hoping @dnoermann will jump in and help finalise the process :)
 
I was referring to the pin-out table as a useful resource on its own.
 
mmi said:
Thanks for the clarification. As @Loz mentions above that kind of pin assignment table is not part of T6 wiring diagram any more.
Actually PDF-search functionality works very well in the document - to not miss any T73a assignments ;) But true, some work involved in there.
Click to expand...
Limalex said:
Thank you Gents. So I got some days to spend in front of my computer
Click to expand...

Correct, but i always look in the T5 GP Schematic, there is a table for the two BCM Connectors available, and aprox 90% are still valid for the T6.
 
dnoermann said:
Correct, but i always look in the T5 GP Schematic, there is a table for the two BCM Connectors available, and aprox 90% are still valid for the T6.
Click to expand...

Hi Dennis, I am glad you jumped in :)
I started cross checking the T5.1 and T6 BCM pin assignments and you right many are the same, but many are not. I am worried about the ones are not.

Have you modified any of the T73a, T73b wiring when you upgraded the BCM?

Which LINbus connection you used for a MFSW from T41 pin 10?

I use T73b pin 17, but I read on this forum that the early T6 retrofit works on T73b pin 36

I finally got the right BCM and got my MFSW with CCS and really wish to make them work
 
EDC17CP20 (EU5) which is used in the T5 GP and in the early T6 with EU5 Engine does not support MFSW CCS by default.

To use this you will need to patch the ECU Firmware. I explained this here: Retrofitting of Cruise Control by MFS on Polo 6R, T5, T6 - Page 6 - UK-POLOS.NET - THE VW Polo Forum

And when you wont to use this, than you need to cable the MFSW Lin Bus like the EU6 Engine, meaning connect it to pin 36 of BCM.

On my T6 BCM retrofit to T5 GP the only think i had to change in cabling was the Instrument-Lightning. Explained here: Transporter T5 GP retrofit BCM from T6 ==> instrument lighting is fading in and out
 
dnoermann said:
EDC17CP20 (EU5) which is used in the T5 GP and in the early T6 with EU5 Engine does not support MFSW CCS by default.

To use this you will need to patch the ECU Firmware. I explained this here: Retrofitting of Cruise Control by MFS on Polo 6R, T5, T6 - Page 6 - UK-POLOS.NET - THE VW Polo Forum

And when you wont to use this, than you need to cable the MFSW Lin Bus like the EU6 Engine, meaning connect it to pin 36 of BCM.

On my T6 BCM retrofit to T5 GP the only think i had to change in cabling was the Instrument-Lightning. Explained here: Transporter T5 GP retrofit BCM from T6 ==> instrument lighting is fading in and out
Click to expand...


Since my last post I found that thread on uk-polos.net. I also find someone who has a program to do the patch.
So if I tell him to change " CrC_swtMainSwtHWEna_C from 0x01 to 0x00" it would be enough him to do the pach?

About the other forum post.

"With T5 BCM 7H0 937 090 B the Klemme 58_out from T73b Pin 1 or later T73b Pin 4 had enoth current.
In T6 an additional Relay J602 is needed, which is controlled by T73 pin 7"

I do not really understand what should I do and how?

I understand on the T6 T73b pin 4 is the illumination, cigaret lighter ect. pin7 is the interior lights

on the T5 T73b pin 1 is the illumination pin 4 vacant and pin 7 is the numberplate lights only.

It is not possible to simply move pin 1 to location pin 4 or pin 7 on the new BCM?

Could you explain thad J602 relay fitting like if you would talk to a complete idiot? :)
 
Show him my post from the Polo Forum.
If he is skilled he will find it.

No Problem, i will post a Wiring Diagram of my change, i think that will help.
For starters you can do the retrofit and see how it works.
If the Instrument lightning does have the same issue, than we will fix it.
It is not so bad i drove 2 Month with the lights fading in and out all the time. .....
 
dnoermann said:
Show him my post from the Polo Forum.
If he is skilled he will find it.
Click to expand...

I believe He is UK's most skilled tuner so hope for the best :)

dnoermann said:
No Problem, i will post a Wiring Diagram of my change, i think that will help.
For starters you can do the retrofit and see how it works.
If the Instrument lightning does have the same issue, than we will fix it.
It is not so bad i drove 2 Month with the lights fading in and out all the time. .....
Click to expand...

Lovely. I really appreciate it. I will get back my car from the mechanics next week and I going to fit new BCM first thing and see how it goes, but to be honest I might do not have dimmable instruments, or I just never used them. I do not know if it make any difference. Anyway, if it would fade I can get away with it until it will be fixed :)
 
I answered here.

Transporter T5 GP retrofit BCM from T6 ==> instrument lighting is fading in and out

I am using VCP with EDC17 Boot Plugin, but this needs opening the ECU. I know that "PCM Flash" can read/write via OBD, did not try it .... Galetto 4 works, too. Kess did not work in my test, but probably my bad ... Thank you I will check those. And see what investment i would needed. But...
forums.ross-tech.com forums.ross-tech.com
Still had no time to make the drawing ...
 
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