Audi A4 B8 Drive Scan: Diagnostics & Repair

Hello everyone,

I started writing a DBC file for the drive control and comfort CAN buses, but it's incredibly difficult without a matrix. Maybe you can provide me with some information about it.

I'm still in the early stages, and only a few signals have been reliably detected.

I realized:

103h Wheel rotations.
105 RPM, accelerator pedal, clutch.
3C0h key.
3C1h light outputs.
3C2h Steering Lever L
3C3h emergency brake, speed.
3D0h door driver.
3D1h Passenger.
3D2h Rear L.
3D3h Rear.
414h trailer light.
5A0h Rain and Light Sensor.

Perhaps someone else knows something.

Best regards,
Ulli

HI!

Could you possibly upload a trace sometime?
It would be very kind .

What's the year of your A4, and where did you tap into the CAN bus?

Regards

Hello Blade8K.

My Audi is from 2009, and the CAN bus connector is located either on the left or right side.
Can connector for tapping (it's a large connector with a drive and comfort features).
I need to do some tracing first; I'm not sure if you can read BLF files.
Best regards, Ulli.

HI!

What software do you use?

and b)
Where is the plug located? Behind the glove compartment?

Best regards,

Hi.

The software is Vector's CAN Analyzer.

The plug is located on the side, where the fuses are.

ID 6B4 is not working for me; it's probably something unimportant on the combined system.
The higher the ID number, the lower the priority.

Here's a short trace log from the drive scan that runs during startup.

Best regards,
Ulli

Hello Ulli!
Please send me a private message; I'm unable to send you one.
Best regards,

I'm also looking for it.
I wanted to send you a private message, but I need to make 5 posts first before I can send you one.
Please provide feedback.

Thank you!