2x2 Pin Configuration: Older Models Explained

Translated on 24-09-2026, 6:44.

Hi,

How are the old 2x2-pole connectors used for the error memory?
Audi 80 TDI, manufactured in 1994.

Thank you in advance

.

Best regards, Christian.

Guest Free account, no CAN development support

Hi,
Here's a picture of it.

and the occupancy:

white connector:
top: K-line
bottom: L-line

black connector:
top: 12V+
bottom: ground

See you then.

Andy.

Translated on 24-09-2026, 6:46.

"Jooooh, that was fast, thank you!!"

@Rainer:

It would be helpful to include the image in the technical article about the diagnostic adapter

.

Best regards, Christian.

Guest Free account, no CAN development support

Hello.
I also have a question about the 2x2 diagnostic connector.
I have a Passat, model year 1991, with a 2E engine and 115 horsepower.
He also has these two connectors underneath the control unit. Can I also query it using the diagnostic circuit shown on this page?
Do I absolutely have to use a VAG-COM device?
Thank you in advance!
Regards,
Frank.

Translated on 24-09-2026, 6:47.

Hello Christian,

I'm including the image in the article.

Best regards, Rainer.