Golf 6 / VI (Convertible) => Where are the bus lines located?

Hello forum,

After I was still able to find and connect to the buses with the A5, I'm completely stuck with the Golf 6. Does anyone have any ideas or suggestions, for example, whether an older Golf model is similar?

Regards,
Rolf.

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After I was still able to find and tap the fuses in the A5, I'm not getting anywhere at all with the Golf 6. Does anyone here have a suggestion, for example, whether an older Golf is similar?

Does the Series 6 also not have a dedicated diagnostic interface, also known as a gateway?
One should be able to find everything there.


Best regards,
Ingo

Dieselfahrer wrote:

Quote: After I was still able to find and connect to the buses with the A5, I'm not getting anywhere at all with the Golf 6. Does anyone here have a suggestion, for example, whether an older Golf is similar? Does the Series 6 also not have a dedicated diagnostic interface, also known as a gateway? One should be able to find everything there. Best regards, Ingo

Yep, he did.
Sitting under the steering wheel.

Greetings.

Hmm, do you think it's related to Euro5 regulations? But isn't that actually not a separate interface?

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Hmm, do you think it's related to Euro5 regulations? But isn't that actually not a separate interface, or?

I don't understand the question.
The device that VW calls a "diagnosis interface" is the CAN gateway, which connects the various buses.
For example, in the Golf V, there were CAN-based options such as CAN-drive, CAN-combination, CAN-comfort, CAN-infotainment, and CAN-diagnostics. And of course, you can intercept all of those signals there.


Best regards,
Ingo

Is this physically a different connector, or can it also be achieved through pins on the OBD connector?

Regards,
Rolf.

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Is this physically a different connector, or can it also be achieved through pins on the OBD connector?

Well, you'll have to access the cables that connect to the diagnostic interface connector. Or, if you don't want to modify the original wiring harness, you can build an adapter with the connector for the diagnostic interface and the corresponding counterpart.

The OBD connector naturally only carries the diagnostic CAN bus.

Best regards,
Ingo

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The OBD connector logically only carries the diagnostic CAN bus.

It's not always quite like that. It is likely that, depending on the manufacturer, additional CAN buses are connected to the pins that are not used in the specification.

Okay, so what you're talking about is something like the CAN connector found in Audi vehicles, right?

Regards,
Rolf.

Hello,

He's referring to the CAN gateway. All the CAN buses (for powertrain, comfort, and infotainment) converge there, making it convenient to tap into the necessary wires.

Without any further actions on your part, you won't get much information from the CAN pins on the diagnostic connector.

Best regards, Rainer.

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He means the CAN gateway.

I did write that. No offense, but it's not my fault that VW calls the gateway the "Diagnostic Interface."

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All the CAN buses converge there (powertrain, comfort, infotainment), making it convenient to tap into the necessary wires. On the CAN pins at the diagnostic connector, you won't get much output without any further actions on your part.

That's how it is, at least with the VWs that I know.


Best regards,
Ingo

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Quote: The diagnostic CAN is logically only present at the OBD connector. It's not always quite like that. It is likely that, depending on the manufacturer, additional CAN buses are connected to the pins that are not used in the specification.

There might be cars like that, perhaps even at VW. As far as I know, there are even cars (not necessarily VW models) where the diagnostic CAN bus and the powertrain CAN bus are the same.
However, neither of those things is definitely true for the Golf V, and from everything I've heard so far, it's not the case for the Golf VI either.

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Okay, so, is that what you mean, something like the CAN connector plug in Audi, or?

I'm not familiar with the "CAN connector" from Audi, but I mean the connector that plugs into the "diagnostic interface" (which is actually a CAN gateway).


Best regards,
Ingo

If the diagnostic interface is the OBD interface, where CAN hi/lo is located on pins 6 and 14 and is situated in the lower left area of the driver's footwell, then I don't understand something. Here, I can only use the diagnostic CAN to actively communicate using TP2.0 or whatever protocol, but I can't simply read data. Or are the other pins possibly already in use?

At Audi, I know of a CAN bus connector located on the right side of the dashboard, accessible when the passenger door is open. If you disconnect this connector, all communication on the buses stops because this connector disconnects the connection to the control units. Here, you can connect diagnostic equipment and also identify short circuits on the bus.

Edit: It might actually be referring to a connector on the diagnostic control unit (e.g., J533)? Then I'll have to really delve into the dashboard, I think.

Regards,
Rolf.

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If the diagnostic interface is the OBD interface, where pins 6 and 14 have CAN hi/lo and it's located in the lower left area of the driver's footwell, then I don't understand something. Here, I can only "use" the diagnostic CAN to actively communicate TP2.0 or whatever, but I can't simply read data. Or are the other pins possibly occupied?

I'm sorry, but we can't continue like this.
Diagnosis interface (which is what VW calls it) = CAN gateway (which is the function of this device) is a control unit to which (logically!) all CAN buses converge.
It's best if you get yourself some literature (here, for example,

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isn't 100% Golf V/VI, but the connections are explained quite well).

At Audi, I know of a CAN bus connector that is located on the right side of the dashboard, accessible when the passenger door is open. If you disconnect this connector, nothing will work on the buses anymore, because this connector disconnects the connection to the control units. Here, you can connect diagnostic devices and also see short circuits on the bus.

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I'm not familiar with Audis...

Edit: It might actually be a connector on the diagnostic control unit (e.g., J533) what is meant by

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? Yes!

Then I'll have to delve deep into the dashboard, I think. http://touran.dk/PDF/info/Touran_el.pdf)

Could be.

Best regards,
Ingo

Hi everyone,

I hope and believe I'm in the right place. It was briefly mentioned earlier, but not elaborated on. I would like to build or buy a J533 Y-cable. I want to have direct access to it and be able to sniff the CAN bus. Does anyone know if there are already pre-made Y-cables available for purchase, so that I can connect my hardware between them?

VG

I'm not familiar with ready-made Y adapters, but you can buy a used gateway on **** . These are sometimes sold with plugs and short cables. Desolder the socket and create an adapter from it. That's how I did it.

Thank you for the idea. I actually received another suggestion just a little while ago. Here's the plug:

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Mouser Part Number: 571-966871-1 Manufacturer part number: 966871-1 Manufacturer: TE Connectivity / AMP Description: Base & Cable Housing Shrouded Hdr 20P R/A

http://www.mouser.de/Search/m_ProductDetail.aspx?TE-Connectivity%2f966871-1%2f&qs=%2fha2pyFaduhA86MyY397IQ%2fWiMcsvOY3ZXNO37EBOBCdto2ZxnAADw%3d%3d