HondaECU: A Python repository from fqyy365t

Support and Development

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. You can also help facilidate R&D by sending me ECUs, connectors, harnesses, etc.

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.

Usage

HondaECU.exe --help
usage: HondaECU.exe [-h] [--checksum CHECKSUM] [--rom-size ROM_SIZE]
                   [--fix-checksum] [--debug]
                   {read,write,recover,validate_checksum,fix_checksum} binfile

positional arguments:
  {read,write,recover,validate_checksum,fix_checksum}
                        ECU mode
  binfile               name of bin to read or write

optional arguments:
  -h, --help            show this help message and exit
  --checksum CHECKSUM   hex location of checksum in ECU bin (default: 0x3fff8)
  --rom-size ROM_SIZE   size of ECU bin in kilobytes (default: 256)
  --fix-checksum        fix checksum before write/recover (default: False)

debugging options:
  --debug               turn on debugging output (default: False)

Checksums

Model	Year	ROM Size	Keihin Code	Checksum Address
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
CBR600RR	2007-2016	256 kb	38770-Mxx-xxx	3FFF8
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
CBR1000RR	2006-2016	256 kb	38770-Mxx-xxx	3FFF8
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 though others may work. I used a FTDI Friend from Adafruit!. For the serial to k-line converter I used the schematic below since it contained no special ICs, just common transistors and R/C components that I had laying around the house.

A note about the circuit below, while the PL2303 is a perfectly good USB to serial converter, it does not support bit banging and is not recommended. If you do have one of these converters you will need to use one of the control lines for the init sequence and that complicates things. Just get yourself a FTDI chip, they are cheap.

A much nicer looking k-line to serial converter that I plan on implementing next is this one that uses one that uses optocouplers to keep the bike power isolated from your electronics.

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.

fqyy365t/HondaECU