rusefi.com

I have two unrelated inquiries about M3.8 VAG 80 pin so it's tempting to create a harness adapter. I have not yet decided if Proteus-based or microRusEFI-based

@crown_royal_b5 do you have any pinouts with pin functions? I have nice https://github.com/rusefi/rusefi/wiki/VAG-80-pin but those need to be deciphered. Maybe you have one with explicit pin functions written up?

todo

https://docs.google.com/spreadsheets/d/11VhTdJThdqmZ-Nqcvl-1hE4fXxZVc2ak_pSEVT-5SF0

https://www.thesamba.com/vw/forum/viewtopic.php?p=4982149#4982149 is nice but it's wrong about pin 1

@AndreyB my 1999.5 Audi A4 Avant has engine code AEB. Attached is a pinout for the 80 pin connector for engine code AEB. Pin numbers not listed are vacant. This info was compiled by Kevin Black and can be found here:
http://www.vems.hu/wiki/index.php?page=MembersPage%2FKevinBlack%2FAudiAEB

Here are some pics of my project.

Thank you for the pinout spreadsheet, it's amazing!

Also impressively clean work on both metal and electronics on these pictures

A few open questions

6 tach out 5 or 12?
12 MAF what? signal or power?
13 MAF what? signal or power?
18 fuel consumption ???
62 baro power 5 or 12?

Thanks for the kind words!

the tubular exhaust manifold and downpipe were fabricated by Anthony Cicero at 16w Fabworks in Clifton, NJ. Cerakote and polish by Frank Clarici at Shore Polishing and Finishing in Bayville, NJ. Wiring by me, I did some self study to learn more about harness fabrication here: https://www.hpacademy.com/courses/learn-motorsport-wiring/

See attached wiring diagram from the Bentley Audi A4 manual 6 tach out 5 or 12?
see No 57/3 of diagram, wire at pin 6 goes to wire connection in instrument panel wiring harness (RPM-signal)
I'm not sure if this is 5V or 12V

12 MAF what? signal or power? 13 MAF what? signal or power?
see No 57/2 of diagram, wires at pins 12 and 13 go to pins 2 and 4 of MAF (signal)

18 fuel consumption ???
see No 57/5 of diagram, wire at pin 18 goes to Auto Check System (for vehicles with ACS and Trip Computer only)

62 baro power 5 or 12?
see No 57/4 of diagram, wire at pin 62 goes to Plus connection (5V) in Motronic Multiport Fuel Injection wiring harness

crown_royal_b5 wrote: ↑

Sun Sep 26, 2021 4:08 pm

12 MAF what? signal or power? 13 MAF what? signal or power?
see No 57/2 of diagram, wires at pins 12 and 13 go to pins 2 and 4 of MAF (signal)

18 fuel consumption ???
see No 57/5 of diagram, wire at pin 18 goes to Auto Check System (for vehicles with ACS and Trip Computer only)

Right but in order to wire-in a standalone we need more detailed info - for MAF we need to know which one is GND which one is signal?

For fuel consumption we need to know if that's analog or digital pin in what direction etc etc.