Pages: [1]
Author Topic: Reprograming ECU without checksum  (Read 8121 times)
Gulfstream
Full Member
***

Karma: +3/-5
Offline Offline

Posts: 232



« on: June 29, 2015, 09:55:43 PM »

Hi peolpe!

i write the ecu file without checksum file in mmps.
after the reprogramation, i make a test and the engine starts. but in the second start, the engine dont works!
when i try to read the ecu in mpps appears "ecu not found"

the car is a passat v6 2004 BBG.

what i can be make now to solve this problem?

thanks!
Logged
nyet
Administrator
Hero Member
*****

Karma: +604/-166
Online Online

Posts: 12232


WWW
« Reply #1 on: June 29, 2015, 09:56:36 PM »

How about checksumming the file before writing it?
Logged

ME7.1 tuning guide (READ FIRST)
ECUx Plot
ME7Sum checksum checker/corrrector for ME7.x

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience.
ddillenger
Hero Member
*****

Karma: +637/-21
Offline Offline

Posts: 5640


« Reply #2 on: June 29, 2015, 10:22:53 PM »

Unplug the ecu for 5 minutes.

Plug it back in.

Do not attempt to start the car, or turn the key off.

Flash a file with good checksums.

Logged

Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!

Email/Google chat:
DDillenger84(at)gmail(dot)com

Email>PM
Beaviz
Full Member
***

Karma: +8/-4
Offline Offline

Posts: 190


« Reply #3 on: June 29, 2015, 11:54:26 PM »

Wouldn't MPPS correct checksums? According to AMT Cartech it should: "It offers like most other tools reading / writing operations and checksum support..."
Logged
turboat
Moderator
Hero Member
*****

Karma: +44/-3
Offline Offline

Posts: 619


« Reply #4 on: June 30, 2015, 12:31:39 AM »

How has that worked out so far? Is it genuine mpps?
Logged
Gulfstream
Full Member
***

Karma: +3/-5
Offline Offline

Posts: 232



« Reply #5 on: June 30, 2015, 12:39:00 AM »

Unplug the ecu for 5 minutes.

Plug it back in.

Do not attempt to start the car, or turn the key off.

Flash a file with good checksums.



I will try to make it!

I correct the checksum with the me7sum.exe and check with me7check.exe and found no erros!
Logged
Gulfstream
Full Member
***

Karma: +3/-5
Offline Offline

Posts: 232



« Reply #6 on: June 30, 2015, 12:41:11 AM »

Wouldn't MPPS correct checksums? According to AMT Cartech it should: "It offers like most other tools reading / writing operations and checksum support..."

In MPPS have the bottom for id ecu, read, write and checksum... i dont know whats the file i have to select when i click in checksum!
Logged
Gulfstream
Full Member
***

Karma: +3/-5
Offline Offline

Posts: 232



« Reply #7 on: June 30, 2015, 12:48:47 AM »

How has that worked out so far? Is it genuine mpps?

Not genuine!

Its a cracked version.

I read the original file and save on my HD

I edit on file the KRKTE because i install new injectors and save the new file without correct the checksum.

In MPPS, i click in WRITE and select this new file, when the work its complete, the problem inform to switchoff the key.

after it, i disconect the MPPS (EOBD2) and switchON and start the engine fine! switchoff.... when i try to start again the engine not work, the fuel pump not work... all not work!

and now... when i try to write i new file with the corrected checksum the MPPS dont found the ECU!

But i will try to make it, that the ddillenger say!
Logged
spacey3
Full Member
***

Karma: +12/-1
Offline Offline

Posts: 198


« Reply #8 on: June 30, 2015, 01:20:16 AM »

I think MPPS compares the file/checksums to another.

So... Click Checksum -> Select file you want to checksum -> Select/open ori file -> Save checksummed file -> Write checksummed file

Then you can write.
Logged
jiggle
Jr. Member
**

Karma: +0/-1
Offline Offline

Posts: 32


« Reply #9 on: June 30, 2015, 01:33:40 AM »

mpps has been perfect at checksumming for me

I bricked my ecu after a couple goes with mpps. it can fix them pretty easily, dont worry
Logged
tjwasiak
Sr. Member
****

Karma: +26/-0
Offline Offline

Posts: 420


« Reply #10 on: June 30, 2015, 06:41:40 AM »

I would check if it is not related to RSA checksum issue described already on Nefmoto forums...
Logged
Gulfstream
Full Member
***

Karma: +3/-5
Offline Offline

Posts: 232



« Reply #11 on: June 30, 2015, 10:14:44 AM »

Unplug the ecu for 5 minutes.

Plug it back in.

Do not attempt to start the car, or turn the key off.

Flash a file with good checksums.



I make it

unplug ecu for 5 minuts and plug back, i dont start the engine, the key is off.

but the problem still "ECU not found"

Sad
Logged
Gulfstream
Full Member
***

Karma: +3/-5
Offline Offline

Posts: 232



« Reply #12 on: June 30, 2015, 11:02:02 AM »

The problema was solved!

I try again and make equal that the ddillenger say and MPPS writh the new file with the corrected checksum!

Thanks for helping!! ALL!
Logged
overspeed
Sr. Member
****

Karma: +21/-5
Offline Offline

Posts: 383



« Reply #13 on: June 30, 2015, 11:02:53 AM »

just boot it and will be fine
Logged
Gulfstream
Full Member
***

Karma: +3/-5
Offline Offline

Posts: 232



« Reply #14 on: July 01, 2015, 09:52:24 AM »

KRKTE is a 8 bits?

I install 320cc (FBY2850 18 holes) in V6 30v, how i can decrease in KRKTE?

I read a post here in Nefmoto, Tony say that not good decrease too much in KRKTE, how is this too much?

Smiley
« Last Edit: July 01, 2015, 11:00:15 AM by Gulfstream » Logged
Pages: [1]
  Print  
 
Jump to:  

Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Page created in 0.024 seconds with 18 queries. (Pretty URLs adds 0.001s, 0q)