Author Topic: Reverse Engineering MIU G3 (based on V7 III and V9)  (Read 2198 times)

Offline danketchpel

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Re: Reverse Engineering MIU G3 (based on V7 III and V9)
« Reply #60 on: July 19, 2021, 07:03:34 PM »
I wonder if the 2021ís are using a redesigned unit.


The MIU G4.

That's the same question I was going to ask as I'm looking at a 2021 V7 850 Special purchase very soon.

Offline pauldaytona

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Re: Reverse Engineering MIU G3 (based on V7 III and V9)
« Reply #61 on: July 21, 2021, 03:48:08 PM »
The G4 is talking CAN bus to the outside world for diagnostics and programming. Bye bye K-line
Paul

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Offline Zenermaniac

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Re: Reverse Engineering MIU G3 (based on V7 III and V9)
« Reply #62 on: July 23, 2021, 09:14:43 AM »
Here is an inside view of the MIU G3 and a block diagram of the MCU chip.
Full documentation of the chip is at: https://www.infineon.com/cms/en/product/microcontroller/legacy-microcontroller/legacy-8-bit-16-bit-microcontroller/xc2700-family-powertrain/xc27x5x-series/#!documents

I believe that an MIU G3 that gets bricked during programming is a failure of the base program to account for data errors and request a retransmission of the data byte or at least reset to a stable state. If someone wants to jump down the rabbit hole and figure out a way to recover a bricked unit.






Offline Meinolf

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Re: Reverse Engineering MIU G3 (based on V7 III and V9)
« Reply #63 on: July 24, 2021, 05:40:57 AM »
Hi,

thanks for the picture. Can you trace the ECU I/O pins to the CPU, the ignition coil driver, the baro sensor and other chips?

Similar to what John did on the 5AM?

https://drive.google.com/file/d/1LOuP-p3JJdLPeWa-CckuKrN60AExXM6U/view?usp=sharing

Cheers
Meinolf

Wildgoose Chase Moto Guzzi

Re: Reverse Engineering MIU G3 (based on V7 III and V9)
« Reply #63 on: July 24, 2021, 05:40:57 AM »

Offline Zenermaniac

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Re: Reverse Engineering MIU G3 (based on V7 III and V9)
« Reply #64 on: July 24, 2021, 10:06:07 AM »
I plan to take a stab at it soon.  :cool:

 


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