Vida CEM swapping

[V70user]

Check connection, it's working

Weird, because Nano I use works perfectly with others projects, but not with SerialBDM.
Connection stays the same, and there is no issues with transmission.
I pluged another usb cable, the same result...
Any idea?

[Treur]

Check connection, it's working

Weird, because Nano I use works perfectly with others projects, but not with SerialBDM.
Connection stays the same, and there is no issues with transmission.
I pluged another usb cable, the same result...
Any idea?

Either the sketch is not uploaded to Arduino, or there is a problem with the connection. It works for me right away without any problems.

[V70user]

After many, many attempts, finally connection was established and I can confirm that
SerialBDM programmer works ! This program brought one of the dead CEM back to life after a failed writting

My observations:

1- You can erase / write specific blocks in flash memory as it shows below.
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SerialBDM@Kaev_choose.jpg (28.66 KiB) Viewed 1713 times

SerialBDM@Kaev_erase_0x8000y.jpg (34.4 KiB) Viewed 1713 times

SerialBDM@Kaev__write_0x8000y.jpg (61.41 KiB) Viewed 1713 times

.
2- The whole CEM flash memory contents reading takes about 4 minutes, You can't read specific memory block

3- If Your flash memory dump has been obtained using T5Luke's program, then You have to flip bytes order in whole dump file
with 16 bit rule e.g. F2 32 E5 24 --> 32 F2 24 E5

4- Arduino needs to be powered with 5V ( to A4 pin) not necessarily from the CEM board. You can use extended 5V power supply
and apply a common ground (to GND pin)

Thanks to the author for sharing this tool for free...

Спасибо, Сергей

[V70user]

5- SerialBDM programmer works with Arduino Uno as well

6- Whole CEM flash memory dump writing takes about 6 minutes
.

SerialBDM@Kaev__write_whole_dump.jpg (48.46 KiB) Viewed 1690 times

.
7- Most important - for the SerialBDM programmer to work properly you need to open the Arduino IDE,
upload the sketch to the Arduino memory and close the Arduino IDE, otherwise the programmer will not work.

[dikidera]

After playing around for a while, I managed to get consistent lock/unlock of the torque converter in 3rd gear, however because I copied the lockup maps from another one in the bin, there seems to occur an issue(when used on not so good transmissions) where it locks and unlocks the torque converter after a shift, I guess because of overlapping parameters *somewhere*.

I have also begun playing around with shift times, though I noticed there were two time parameters, I will have to see which one does what I want the most or if they should be modified in conjunction with each other.

@vtl, do you have any clue why sometimes when I issue FF86 command on CAN LS and CAN HS, the ABS module doesnt like that? I get an SRS code when I wake them and it's super annoying. There must be something I am missing when putting the modules in programming mode.

[vtl]

What SRS code exactly?

[dikidera]

I didn't read them, I only see it on the instrument cluster display about SRS/Airbag. If you drive the car, they "disappear"(become marked inactive or whatever happens). So it's not affecting me, but it is annoying because every time I reprogram the car it appears. And I seem to remember the BCM module has a limited memory and they will become permanent in time.

[vtl]

I didn't read them, I only see it on the instrument cluster display about SRS/Airbag. If you drive the car, they "disappear"(become marked inactive or whatever happens). So it's not affecting me, but it is annoying because every time I reprogram the car it appears. And I seem to remember the BCM module has a limited memory and they will become permanent in time.

If I remember correctly, this always happen when programming blocks in VIDA. But my memory is vague on that.

[Treur]

SRS/AIRBAG on display is not SRS error, it’s result of FF86, you just need clear with vida.

[Treur]

Спасибо, Сергей

К сожалению Сергей не сможет этого прочитать здесь, хозяин этого форума не пропускает пользователей из России. Но я передам.