I will give some effort to DIY make synchro Etacs and ECU Mitsubishi Colt

**furnata** · 6th March, 2015, 11:08 AM

So after many try's i get the decision
All you need when you lost synchro between Etacs and ECU is to read (only eeprom is enough)9s12dg128 from etacs and 24c04 from ECU
Then open files with Hex workshop and see when is synchro lokated ( will post pics) in 9s12dg128
and write it in 24c04
In 9s12dg128 synchro is in 1a06 to 1a0c - 7 bytes
in 24c04 when the synchro is lost you'll get 77 77 77 77 77 77 77 41 in row's 170 and 180
so you'll need to write synchro from 9s12df128 in this two row's
You write this 7 bytes and the eith byte is checksumm (you need to calculate)

example:
synchro from 9s12dg128 - 6b ad 70 98 84 76 44
calculate cks. is 61
so you'll need to write in 24c04 6b ad 70 98 84 76 44 61
Then you'll nedd to calculate cks from all file and put in the very last 4 bytes in 24c04
That is without using MUT 3 and other equipment

**elephantul** · 6th March, 2015, 07:19 PM

how calculate cks file ?

**furnata** · 6th March, 2015, 08:22 PM

with hex workshop mate- simple

**Rerouter** · 8th May, 2015, 03:50 AM

Custom CRC32 with default poly and different xor and initial?

**bram380** · 8th May, 2015, 05:59 PM

Checksum 8bit:

**elephantul** · 8th May, 2015, 07:02 PM

this is easy, for entire file is necesari

**bearheroes** · 9th May, 2015, 09:48 AM

Did any other guy found way to calculate chcksum for entire file? Maybe my brain is not too good...!

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**cdex** · 12th September, 2016, 07:54 PM

hello

i think chksum is - 5E

**Bllinda** · 7th October, 2016, 10:57 AM

Originally Posted by furnata

in 24c04 when the synchro is lost you'll get 77 77 77 77 77 77 77 41 in row's 170 and 180

example:
synchro from 9s12dg128 - 6b ad 70 98 84 76 44
calculate cks. is 61
so you'll need to write in 24c04 6b ad 70 98 84 76 44 61
Then you'll nedd to calculate cks from all file and put in the very last 4 bytes in 24c04
That is without using MUT 3 and other equipment

You are wrong .... written somewhere that it is 61

Originally Posted by cdex

hello

i think chksum is - 5E