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A diagnostic and flashing tool for Honda ECUs

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Research and development takes time and money. Since it is my goal to keep this project opensource, if you find this project useful, please consider donating.

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Software

Windows

HondaECU for Windows requires the libusbK driver. Download Zadig and use it to install the libusbK driver. There is a usage guide on the Zadig website if you need help using it. Once libusbK is installed for your FTDI device, download the latest release of HondaECU.exe.

From source

https://conda.io/miniconda.html

pip install -r requirements.txt --user

Checksums

Model Year ROM Size Keihin Code Checksum
Address
Start
Offset
CPU Pinout
(Gnd,+12,Kline)
Z125M 2019 92 kb 38770-K0F-A01 0 8000 M16C 10,1,30
CRF110F 2019 64 kb 38770-KYK-D12 0 8000 M16C 10,1,30
MSX125 2017 64 kb 38770-K26-B13 0 8000 M16C 10,1,30
MSX125 2014 48 kb 38770-K26-911 0 4000 M16C 10,1,30
CBR250R 2012 56 kb 38770-KYJ-971 DFEF
CBR250R HRC 2014 256 kb 38770-K33-R51 18FFE
CBR250RR HRC 2017 1024 kb 38770-K64-R02 7FFF8
CRF250R 2011 256 kb 38770-KRN-E52 1FFFA
CRF250R 2013 256 kb 38770-KRN-E73 18FFE
CRF250R 2014 256 kb 38770-KRN-E82 19FFE
CRF250R 2015 256 kb 38770-KRN-E92 19FFE
NSF250R 2013 256 kb 38770-NX7-033 18FFE
VTR250 2015 256 kb 38770-KFK-632 3FFF8
CBR300R HRC 2014 256 kb 38770-K33-R01 18FFE
CB300 2008-2012 56 kb 38770-KVK-xxx DFEF
SH300 2009 56 kb 38770-KTW-901 DFEF
XRE 300 2009-2012 56 kb 38770-KWT-xxx DFEF
CRF450R 2009 256 kb 38770-MEN-E21 1FFFA
CRF450R 2011 256 kb 38770-MEN-E52 1FFFA
CRF450R 2014 256 kb 38770-MEN-A73 19FFE
CB500R 2014 256 kb 38770-MGZ-B01 3FFF8 PPC 12,23,25
CBR600RR 2007-2016 256 kb 38770-Mxx-xxx 3FFF8 M32R
CB600F 2010 256 kb 38770-MGM-B11 3FFF8
CB650F 2015 256 kb 38770-MJE-B41 3FFF8
CB600F/R 2010-2011 256 kb 38770-MFG-Bxx- 3FFF8
Transalp700 2013 256 kb 38770-MFF-B01 3FFF8
Shadow 750 2009 256 kb 38770-MGE-B21 3FFF8
NC750X 2015 256 kb 38770-Mxx-xxx 3FFF8
NC750S 2016 512 kb 38770-MJL-D72 7FFF8
VFR800F 2015 512 kb 38770-MJM-J13 7FFF8
CB1000R 2008-2016 256 kb 38770-Mxx-xxx 3FFF8
CBR1000RR 2004-2005 256 kb 38770-MEL-xxx 3FFFC M32R
CBR1000RR 2006-2016 256 kb 38770-Mxx-xxx 3FFF8 M32R
CBR1000RR 2017 1024 kb 38770-MKFA-D72 FFFF8
VFR1200F 2010 1024 kb 38770-MGE-D02 7FFF8
GL1800 2015 256 kb 38770-MJK-J21 3FFF8

Hardware

The easiest way to talk to the ECU via the k-line is a USB to serial (TTL) converter, and a serial to k-line converter. This code assumes you are using a FTDI based USB to serial converter. For the serial to k-line converter, I recommend the schematic below that uses optocouplers to keep the bike power isolated from your electronics.

kline_interface

Bench Harness

If you make a bench harness to work with your ECU you will need a 2.5 amp power supply. The ECU will power-up with a 2.0 amp power supply but transfer rates will be slow and you will get CRC errors.

Tuning Software

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A diagnostic and flashing tool for Honda ECUs

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