Can I get the code from a J519 - Onboard Supply Control Unit

[hillburnsh]

Powers and Grounds
This is with key ON (but each connector removed from J519)
A - T11/1 red/yel 13.05v
T11/2 red/blk 13.05v
T11/9 - brn ground

B- T12i no powers or grounds

C- T12k no powers or grounds

D- T11a/1 red 13.05v
T11a/5 brn ground

E - T16g no powers or grounds

F - T8t/1 red/vio 13.02v
T8t/3 vio 11.75v
**no ground?
** T8t/3 voltage drop from 13.1v to 11.75v?

G - T12m/1 red/vio 12.74v
T12m/7 org/brn 4.75v
T12m/8 org/grn 0.8v
T12m/11 red/vio 12.7v
** no ground?
** I know these CAN voltages are incorrect

H - not used

I - T2cp/1 blk 13.0v
**should T2cp/2 (blk/yel) have voltage (SC40, SC38)?

J - T6ap/3 red/brn 13.0v
T6ap/5 brn/blk ground

K - T10s/5 red/grn 13.0v
T10s/6 blu/red 13.0v
**no ground?

L - T2cq/1 red/wht 13.0v
**should T2cq/2 blk have voltage (SC1. SC3, SC7, SC39, etc)?

****with key ON (connectors NOT attached to J519), I have the following pins showing continuity with battery ground:
CONNECTORS
A -red/blk, grn/blk, brn, gry, red/yel
B - gry, red/blk, yel/gry, wht/blk, gry/yrl, blk/blu
C - gry/wht, blk, grn/brn, gry/brn, blk/brn, red/wht
D - blk/wht, gry/red, blu/yel, red, wht/grn
E - none
F - brn, red/vio, brn/grn, red/blk, vio
G - red/vio, org/brn, org/grn, red/vio
***I know neither CAN wire should have continuity with ground?
H - not used
I - blk
J - none
K - blk, blu/red, red/grn
L - red/wht

 

[hillburnsh]

Is a replacement J519 installed and coded? Also T12M/1 with ignition on do you have voltage on that pin?

That is with key off and replacement J519 installed (NOT coded, that was my question at the beginning). Results with KEY ON are with all connectors DISCONNECTED from J519. Just to rule anything out, should I connect the original J519 up with all connectors and test powers and grounds (with key OFF)

 

[EuroX]

post #6 clearly states I can provide correct coding for a small fee. At this point I don't think swapping in the original at this point in time is needed is behavior is the same with original unit installed.

Voltage on T12m/7 and T12m/8 with ignition on?

 

[hillburnsh]

post #6 clearly states I can provide correct coding for a small fee. At this point I don't think swapping in the original at this point in time is needed is behavior is the same with original unit installed.

Voltage on T12m/7 and T12m/8 with ignition on?

I thought the coding fee was for the J533. But thanks for clarifying so at least I know if need too I can send it to you.

with ignition OFF
T12m/7 org/brn (CAN L) has 11.8v
T12m/8 org/blk (CAN H) has 0v

with ignition ON
T12m/7 org/brn (CAN L) has 4.75v
T12m/8 org/blk (CAN H) has 0.8v

 

[hillburnsh]

Just monkeying around, I checked continuity with T12m/7 org/brn (CAN L) to the J533 pins. I HAVE CONTINUITY with
J533 Pin 11, brn, Ground @ 639
J533 Pin 14, vio/blk, SC7, J285
J533 Pin 5, org/brn
J533 Pin 15, org/grn
J533 Pin 8, brn (CAN L), J285
J533 Pin 18, yel (CAN H), J285
J533 Pin 6, org/brn
J533 Pin 16, org/blk

 

[EuroX]

I thought the coding fee was for the J533. But thanks for clarifying so at least I know if need too I can send it to you.

with ignition OFF
T12m/7 org/brn (CAN L) has 11.8v
T12m/8 org/blk (CAN H) has 0v

with ignition ON
T12m/7 org/brn (CAN L) has 4.75v
T12m/8 org/blk (CAN H) has 0.8v

I can provide coding for any module based off the vin. Coding is garanteed to be correct. You should not have 11.8v on a can line at any point in time. also 4.75v on can Low seems high almost as if its shorted together. you should have 1.5v of separation between can lines.

 

[PetrolDave]

how do I attach pictures? Thought it was "insert image", but it wants an URL?

How To Post Pictures

 

[hillburnsh]

https://imgur.com/TqIEGzC

 

[hillburnsh]

https://imgur.com/Iud5LxL

 

[hillburnsh]

https://imgur.com/5XsgFI4

 

[hillburnsh]

https://imgur.com/ijh1IFJ

 

[EuroX]

Neither one of those is a factory wiring diagram or manual. Try again. That looks like mitchell or sumdata garbage that's wrong 90% of the time.

 

[hillburnsh]

Neither one of those is a factory wiring diagram or manual. Try again. That looks like mitchell or sumdata garbage that's wrong 90% of the time.

Try again? Does smart ass run rampant on this site? What's "FSM" stand for? Maybe I'm wrong but assumed it meant factory service manual.

Never used "sumdata" but I've used Mitchell a lot and it looks nothing like the Mitchell website I've used. Those pictures are out of
"FSM-VW-CC-SERVICE AND REPAIR MANUAL"

is that not right? That's a serious question. Because if it's not right, that's good news for me. To fix the car I might just have to spend little more to get correct wiring diagrams.

 

[EuroX]

Yes smart ass comments run rampant here especially since over the last 4 pages it's been said numerous times that your wiring diagrams are incorrect. Factory wiring diagrams don't look like that and by factory I mean ones that come straight from the only reliable source like vw, audi and so on straight from the manufacturer. What's factory about the wiring diagrams that you have? The fact that they are wrong? Whoever sold you those should be shot. I think at this point it would be wise to purchase erwin access to factory wiring diagrams and undo what was changed. God only know how the ecm is wired and if that not a factor at this point.

Here's a sample of what factory wiring diagrams look like:

 

[hillburnsh]

Huh that strange, I couldnt find these "Multiple " comments "over the last 4 pages" saying that I have incorrect wiring diagrams. the first time I seen or heard it was couple comments go after I posted a picture.

By the way, I wired it up this last time in accordance with the Workshop and service manual specific to my VIN. Do these pictures look better/

https://imgur.com/a/s7XzrhS

 

[Dr Sheldon]

That maybe the correct factory diagram for one part of your car !! Good find !!

It is the Wrong Diagram to guide you towards fixing your car !!


How you manage to swerve good guidance so easily !!??

Google "Unconscious Incompetent"

 

[EuroX]

I'll just leave this here to summarize what you've been saying as well as a few of us here in case you have forgotten:

I'm beginning to believe my ECU connectors (T94 & T60) are not pinned right.

I have an FSM and another workshop manual that is "supposedly" VIN specific. With both of those manuals, the pin outs of the ECU are not even close.

I have wired the ECU out 3 times now, according to each manual and neither time seems to improve my situation. I no longer care about wire color coding as I know exactly where each wire goes to the car (exactly) from ECU location.

Is there any way to get the correct ECU pin out for my VIN?

I'm now leaning towards my ECU is not pinned out correctly. Even though I've done so via the fsm and workshop manual(VIN specific). I have also traced each individual wire at the ECU to it's said location. But think my manuals are wrong. I've compared the ECU pin out from the FSM, workshop manual, and all data......none of them are remotely close to each other (even though alldata is also supposedly VIN specific).

If gateway works on the bench but not in the vehicle you either have a wiring problem or can bus problem possibly.

MOST DEFINITELY. Which is why I am leaning towards a bad J519 or a bad pinout of the ECU. Regarding the J519, that is why my only question was how can I hook that up and pull the codes (I bought a replacement just in case). But now I am leaning more towards the ECU being pinned wrong.

Unfortunately, regarding the ECU, Ive repinned it 3 times now. I have the FSM, the Work Shop manual and had alldata. With all 3 of these resources the pinout on the ECU (T94 and T60) all differ from each other.

And even though the workshop manual is VIN specific, its not entirely correct either.

There has to be a way to read inside the ECU and get the pinout internally from the ECU. Meaning, what does the ECU say T94/8 goes too (temp sensor, O2 sensor, J682, etc).....any way to get that?

The only way we have found is to study the factory wiring diagram for the car that the ECU in question belongs in.

-Uwe-

Factory wiring diagram is the only one you should be using, Sumdata is always fucking wrong and its fucking useless more times than not.

The factory wiring diagram is always correct. Sumdata or anything else I known to have incorrect information in it all the time for as long as I can remember. Factory diagram can be hard to read if your not familiar but gives a accurate break down of what is used in the vehicle or not. If you insist on using something other than the factory wiring diagram then It will be hard to anyone to assist as we can only follow what we know Is accurate information.

I understand what you're saying. Let me give a specific example and I can attach pictures straight out of the fsm.....and it's wrong.

And unfortunately, it's significant. The FSM says my J519 has "52 pin" connectors and the wiring diagram are wired using multiple "52-pin" connectors. Since I do not have that, I had to refer to the WS VIN specific manual which does have my correct J519.

Now that you mention it, maybe it's not possibly my ECU is pinned out wrong. But maybe my J519 is pinned out wrong?

Cant readily locate me page of notes on the J519 amongst over 300 pages of notes from when this started. So, right now Ill go through the J519 and test each and every wire for power and ground with key OFF and again with key ON and posted what I get.

Something to understand, is that in my FSM, it is "incorrect" and shows my J519 as having multiple T52 connectors. My car does NOT have T52 connectors at the J519, it has slots A-L
A - T11
B- T12i
C- T12k
D- T11a
E - T16g
F - T8t
G - T12m
H - not applicable
I - T2cp
J - T6ap
K - T10s
L - T2cq

Please point out where it shows T52 connectors as I have the factory repair manual and wiring diagram and nowhere does it show t52 connectors. It is dependant on manufacturing date. Vehicle was made before november of 2010. It was made August 24 2010 to be exact

 

[Dr Sheldon]

EuroX said:
If gateway works on the bench but not in the vehicle you either have a wiring problem or can bus problem possibly.

You are doing something Wrong, Something has gone wrong or Lying - That is that !!

These things are an Exact Science

 

[hillburnsh]

EuroX said:
If gateway works on the bench but not in the vehicle you either have a wiring problem or can bus problem possibly.

You are doing something Wrong, Something has gone wrong or Lying - That is that !!

These things are an Exact Science

Right, so tell me what I'm doing wrong. The ECU is pinned iaw the factory wiring diagram, at least the one I have.

I have voltage on the can network where I should not, which could be the cause of all of this. But I have no idea where that voltage is coming from. Almost as if the ECU is directing over 11 volts on the can. Or is that voltage being directed by the J519?

 

[hillburnsh]

And if I don't have the correct wiring diagram and you or anyone here does have it, can I see it? At least I could double check each wire into the ECU wiring. If it's wrong, I will fix it. But at least I can remove that possibility from the equation.