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Post Info TOPIC: 32920-15H10 ECU Pin out


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32920-15H10 ECU Pin out


Here is a preliminary ECU pin out based on the manual and ECU pin labels. One complaint I've always had with the Suzuki manual is they don't show the ECU pin numbers in the schematic and they don't show the wire colors in the ECU pin description. So here it is all in one document.

pdf format is here

busak8_03.jpg


Some interesting undocumented pins. There is an MS so the dual maps are still available which mean you get 3 modes times 2 map sets. No wonder there are 400+ maps.

There is an undocumented EXS pin which is tied to ground like MS. I wonder if this is like the GSXR1000 pin you pull to disable the FI error when you remove the exhaust servo. Any of you guys have the inside dope on that?

Does anyone know what the MO- MO+ are for?  I'm thinking motorized velocity stacks controller.

Besides the PAIR there is also a EVAP solenoid driver for the Calif model which means we may have two auxilary outputs to play with. Staged NOS with custom maps for each stage anyone?  Imagine using the mode switch on the handlebar for Motor, Nos lo, Nos hi

Also found the reset and Mod0 for programming. Not 100% sure on the programming serial lines yet. It looks like some of the 'Yosh' lines are doing double duty. Unfortunately the way they laid out the silkscreen ID labels for the harness pins it was hard to tell exactly which pin the TXD went to. I'm going to have to trace it out to be sure before I try to flash it.

The funny thing is if they are the Yosh plug lines then your already half way to modifiying the yosh plug into a flash plug. (my preferred method )





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Also if any you want to post this into your schematic and reprint it....  confuse

busak8_04.jpg

-- Edited by RidgeRacer at 22:29, 2009-02-11

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Nice...looks like quite a few outputs that may be able to be reprogrammed..

35,36,41,43,44,52,53,???

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  Here is the Mo+ MO- you were looking for. It appears to be the exhaust valve motor control. I found the information in my 1000 k7, k8 manual.

 EDIT: I noticed after this post you already found the "Correct" Busa EXhaust valve on different pins. I was able to find what had in the busa manual.




-- Edited by Busa Quick at 22:00, 2009-02-13

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There is an undocumented EXS pin which is tied to ground like MS


 Looking at my wiring diagram, there are so many B/W grounds that I wonder if the terminal is an extra trace to up the ampacitiy of the ground circuit.  Looking at the 1000 K7, K8 manual I count at least 4  B/W connections to the ECU.


Mark


-- Edited by Busa Quick at 21:58, 2009-02-13

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   One thing the K8 Busa doesn't have is a variable steering damper. On the 1000 K7,K8 the damper has a seperate BR and White wire going to it from the ECM. I would think one wire should be steady state and the other variable.


Mark

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   I just found the link to get the K8 busa pdf. repair manual free.

 http://1gighost.com/hayabusa/k8hayabusamanual.pdf


Mark

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Busa Quick wrote:

There is an undocumented EXS pin which is tied to ground like MS


 Looking at my wiring diagram, there are so many B/W grounds that I wonder if the terminal is an extra trace to up the ampacitiy of the ground circuit.  Looking at the 1000 K7, K8 manual I count at least 4  B/W connections to the ECU.


Mark


-- Edited by Busa Quick at 21:58, 2009-02-13



Looking at the exhaust diagram above EXS is probably Exhaust Sense, the analog input from the exhaust valve position sensor. I checked it against the input ports but I never tested it as an analog input.

Actually on the older gsxr / busa they tied inputs like MS to the sensor ground B/Br so it was easier to differntiate their function.

 



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I haven't updated the chart at the top of the thread yet to reflect it but I have definitely identified the wire harness pins that are used by the MCU boot loader to flash the memory.

7 Blue / Yellow is TXD1 (connects to host serial in)
30 Blue / Green is RXD1 (connects to host serial out)
25 (no wire) is Reset (normal +5V, Ground to reset)
28 (no wire) MOD0 (normal ground, tie to +5V for boot mode)

7 and 30 are wired to the 'Yosh Plug'. If it was me I think I would pull the other two Yosh wires, 55 and 56 and move them over to 25 and 28, if they reach. Then you could use the Yosh plug as a flash plug.

I'm writing another post in the M32R forum on what I found out about flashing these MCUs. You can find it here






-- Edited by RidgeRacer at 17:50, 2009-02-14

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Updated the info


I updated the image in the first post and PDF file to reflect the flash pin info (yellow)

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RE: 32920-15H10 ECU Pin out


Thank you RidgeRacer!

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stocker any chance you could make this a sticky?

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sorry i am so slow, i am 1800mi from the house on vacation....wink

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09 busa.????? now what....still got what it takes.......!

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