understand coding

[gifret]

hi friends


i have KANGOO D65 2006 bmt sagem eeprom 93c46 .
dump is
851738
dump eeprom learnd with renault pin extractor give PIN 6341.

so i changed all bytes eeprom and i see what happend
851739851740851741
i can change all dump exept address from 16 to 19 and 56 to 59 who value is C705E180.
851742
so i thing that s is the code but i dont what algorithm do the ecu for C705E180 giving code pin 6341


I am curious to know this operation and study.


if some one can help or tell me some information I will be delighted.


thanks

[gifret]

any help .
no one know how can we solve this code