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Author Topic: ECU pin outs for 2001 Audi S4 6-speed  (Read 27057 times)
Tony@NefMoto
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2001.5 Audi S4 Stage 3


« on: September 29, 2009, 12:27:53 PM »

This is the ECU pin out for a 2001 Audi S4 6-speed that I compiled from a few different technical resources.

The text file contains the names and colours of all of the connections to the ecu.
The image is a layout for the ecu pin numbering.

UPDATE: Please download the PDF file in the following post.
« Last Edit: April 30, 2013, 07:59:29 PM by nyet » Logged

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Tony@NefMoto
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2001.5 Audi S4 Stage 3


« Reply #1 on: October 08, 2009, 10:13:04 AM »


Here is nice all in one PDF version that FallOut compiled from the information I posted in the previous post.

It is a little nicer to look at.
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iznogoud
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« Reply #2 on: November 13, 2010, 04:07:00 PM »

I have found some errors on the pinouts of this PDF (this past week). On two 2001.5 S4s I double-checked that pin 105 does not go to N249. That pin is empty -- with no wire behind it -- I found after taking apart the harness at the socket. I found a closed circuit with pin 1 of the N249 socket to a wire that on this PDF is listed as going to either N8 or N80 (I cannot remember which).

The other pin (pin 2) of the N249 socket goes to one of the corner pins to the sockets that plug to the fuses supply sockets, right behind the ECU. I believe those corner sockets on most of those pins are power from a particular fuse (not sure which) since they all connect to each other and to various solenoids, like the N249, including cam position sensors. I found that "left-most pins" (so pin 2 on 2-pin sockets, pin 3 on 3-pin sockets, etc) typically connect to power and they are green or green-yellow wires.

Double-check before using this information, but the pinout here most definitely has errors.
« Last Edit: November 13, 2010, 04:11:10 PM by iznogoud » Logged

Audi S4 B5 2000 6sp Cactus Green
Audi A4 B6 Avant 1.8T 2001.5 5sp Santorin Blue
nyet
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« Reply #3 on: November 15, 2010, 05:33:34 PM »


Here is nice all in one PDF version that FallOut compiled from the information I posted in the previous post.

It is a little nicer to look at.

Do you have a .cvs i can import into s4wiki? Smiley
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ME7.1 tuning guide (READ FIRST)
ECUx Plot
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Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience.
madwolf
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« Reply #4 on: March 01, 2011, 01:38:33 PM »

Tony,

I know you've built a benchtop harness for this thing. Do you have any part numbers for connectors.. or if you pulled them from a junkyard, could you share any numbers on them?
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Tony@NefMoto
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2001.5 Audi S4 Stage 3


« Reply #5 on: March 03, 2011, 01:31:22 PM »

I know you've built a benchtop harness for this thing. Do you have any part numbers for connectors.. or if you pulled them from a junkyard, could you share any numbers on them?

I got my connectors from cars that were being parted out online.
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Tony@NefMoto
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2001.5 Audi S4 Stage 3


« Reply #6 on: March 13, 2011, 06:02:59 PM »

Here is my original document that the PDF was generated from.

It includes lots of info on ECU pins and connections between chips on the ECU circuit board.

I did all of the circuit board tracing back in 2006 when I was figuring out what I/O ports were connected to the injectors, spark plugs, and other sensors, etc.
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AudiA4_20T
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« Reply #7 on: April 26, 2011, 10:58:38 AM »

Tony, I appreciate the knowledge you shared. Do you possibly have any pin readouts for the body harness plugs?
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Tony@NefMoto
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2001.5 Audi S4 Stage 3


« Reply #8 on: April 26, 2011, 01:06:45 PM »

Tony, I appreciate the knowledge you shared. Do you possibly have any pin readouts for the body harness plugs?

For that you would need to consult the wiring diagrams. They are posted in the forum I believe, but may only be for the A4.
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nyet
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« Reply #9 on: April 30, 2013, 07:59:11 PM »

Wiring diagram.
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ME7.1 tuning guide (READ FIRST)
ECUx Plot
ME7Sum checksum checker/corrrector for ME7.x

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience.
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« Reply #10 on: April 30, 2013, 08:01:50 PM »

Full set
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ME7.1 tuning guide (READ FIRST)
ECUx Plot
ME7Sum checksum checker/corrrector for ME7.x

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience.
hello
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« Reply #11 on: March 20, 2014, 01:12:04 AM »

Thanks Nyet, I don't mean to bump an old thread but I really needed this for my w/m install. Should be easier now figuring out which wire to splice into. Now to figure out how to tune for w/m should be fun  Wink
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A6_C5_Allroad
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« Reply #12 on: April 01, 2014, 05:21:09 PM »

Thanks Nyet, I don't mean to bump an old thread but I really needed this for my w/m install. Should be easier now figuring out which wire to splice into. Now to figure out how to tune for w/m should be fun  Wink

I'm with you on this!  There is a senior member here (I believe Julex) that is going to be using the Fuel Injector Duty Cycle to modulate his W/M injection.   Currently, I am using boost PSI Coolingmist Vari-Cool 2 has a boost supply hose that allows for direct routing of boost pressure into the variable controller.  I was usin MAP voltage, but didn't like the crazy and constant change.    I like Julex's idea and it has been confirmed that using the injector duty cycle will be suitable signal supply.  It's worth a try.
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Tariq Jallad
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« Reply #13 on: July 14, 2014, 11:02:57 AM »



The ECU pin listing and pin diagram was exactly what I was looking for while trying to troubleshoot my N249. Thank you for that Tony, I am glad to run into this forum which I just joined.
Question: According to Bently's repair manual and according to your ECU pin list, ECU pin #105 is for N249 connection to the ECU, when I checked my ECU's harness there is no wire in pin #105, that explains why there was no continuity between the N249 plug wire #2 and the ECU pin #105. It looked to me like this is how it is from the factory. Did Audi forget a wire? Has any one run into a similar issue? My S4 is a 2001 6-speed USA market. Please help to clarify this confusion.
« Last Edit: July 14, 2014, 11:06:19 AM by Tariq Jallad » Logged
vtraudt
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« Reply #14 on: November 18, 2014, 10:21:51 AM »

Can someone name the ECU pin numbers for the ignition signal of cyl 1-6? Can only find non specific 'power output stage', but not which is what.
They should be
Cyl 1-3
94
110
102
Cyl 4-6
95
11
103

But not sure which pin to what cylinder

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2002 Allroad 2.7T 6spd stage 2
1998 A4 1.8T 5spd stage 3
1996 A4 2.8 auto stock
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