Citroen Jumper 2.9 ECU 0281010931 not start

[joe1953]

Hello,

i have very bog problem with a Citroen Jumper. I tried to make it immo off but my solution dont worked.
Then i have send it to a good friend, he made it immo off and then have send ecu back to customer and customer say, car still dont start.
I asked customer, if he remove immo box, he said YES!

So now he is saying i have destroy his ecu, becuase before ecu was sometimes starting, now ecu doesnt start anymore. This customer fu*** me realy.

Can someone help me to to find a solution?

Here are the zwo files, first file orginal IMMO YES and second file IMMO OFF from good friend.

[Iggie]

It does not start because checksum is not calculated. Take the file with fixed chk and removed DTCs related to immo system.

[joe1953]

how you calculate the checksum?

[Iggie]

how you calculate the checksum?

I thought you have a problem with the customer and not how to calculate the checksum... :hmpf:

[obdsystems]

I'd just re-write original file and walk away from job lol
as sounds problem customer

[joe1953]

because i have two files with calculate CHECKSUM and bouth files are different.
So know i ask about how you calculate this, to understand what you and the other person done.