( AEB ) Motronic 5.9.2 Bench Flash kinda-sorta-diy

[garytightpants]

I was impatient on waiting for an answer to my questions about my setup. So I just went ahead and figured it out as I went.

I started with this:


Then I cut off the longer of the two connectors for the ECU. I found that I needed the following wires/pins:
Pin #1 -Black/Blue
Pin #2 -Brown
Pin #3 -Red
Pin #19-Green/Black (the "K-line")
Pin #43-White/Black

I separated those 5 wires, trimmed off the rest, and sealed it back up


From the OBD connector, you just need the Green, Red/Black, and the Brown(Just to clarify, as there are two browns right next to one another, I used the one to the right in this picture)


As for the wiring, you need combine the Brown wire to the Brown wire while attaching a ground lead, combine the Green wire to the Green/Black wire. and now combine the Red/Black wire to the Red, the Black/Blue, and White/Black wires while attaching a lead for the +12v power supply.
Now, the White/Black wire that goes to Pin #43 only needs to be supplied power when you are flashing the ECU, otherwise it will not connect with whatever program/device you may be using. Personally I used some connectors I had lying around the garage from doing N249 deletes to send power to Pin #43


I also used a toggle switch in-line with my power supply to act as my "ignition switch".


My power supply right now is just a spare battery on a trickle charger


Here is the "finished" product, just needs to be wrapped with some wire-loom tape.


SUCCESS



i hope that this can be helpful to someone else

[ricekikr]

Cant eurodyne/maestro 5.9 be flashed in-car?

[garytightpants]

Cant eurodyne/maestro 5.9 be flashed in-car?

Yup. I used it here for two reasons.
1. A wiring issue has popped up with the OBD port in my car, but only made itself known after maestro had erased the memory of my ecu while flashing than froze during block 0. There is no communication between the ECU and the OBD port right now and driving around reverted back to stock hardware and my spare stock ECU for two days SUUUUCKED. this was a way of recovering my tune.

2. I couldn't find any of my mpps/ vag-com cables.

I also just wanted to do this as a learning exercise, as the only write-ups I could find were for ME7 or newer systems.

This setup could be used for diagnostics/tuning with vag-com, Nefmoto, Winols, etc...

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[zandrew]

Is your ABS light on?

[garytightpants]

Is your ABS light on?

Nope. No lights on.


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[zandrew]

The reason I asked is if your ABS light is on it can prevent you from communicating through the port. To resolve it you just need to unplug the ABS module.

[Mad Cow]

Or even better, just run a dedicated k-line direct to the ECU.

[garytightpants]

Or even better, just run a dedicated k-line direct to the ECU.

That's the next thing on my to-do list


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[nautica tuner]

I'm gonna try this one on mine. Haven't got the car running for almost 7 months now. Thanks for the write up.

[k0mpresd]

this is my set up i use on pretty much a daily basis for at home bench flashing. i have a harness for anything and everything.
also have a little bit fancier set up for mobile use.

[Corrado_Guy]

This is something my buddy threw together, it has a good adjustable power supply and everything else has lots of room for error but it gets the job done if you are paying attention.

[k0mpresd]

that pin 43 is really sensitive to voltage. my mobile psu puts out about 14v and its a no go. my pc converted to bench does about 12.6v and its happy with that.

[garytightpants]

this is my set up i use on pretty much a daily basis for at home bench flashing. i have a harness for anything and everything.
also have a little bit fancier set up for mobile use.

I've seen your modular harness' you have for sale in the forums. I've seen your username pop up in pretty much every forum/search I did on the topic, you know your stuff.

I might make another, simpler harness for doing ME7 mk4 VW's, and I'm hoping for that one to be as clean as your setup.


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