Box nr. v3/17302 DBW
No serial connection
02-07-2018
Measured serial
- ecu pin 2 to gnd = -8,46V (not connected).
- Are you sure ? Maybe -8.46V ?
- pc pin 3 to gnd = -6,49V (not connected)
- Are you sure ? Maybe -6.49V ?
- Measured c5 = 0V hmm...
- Measured c7 = 4,9V
Is there anything else I can try?
19-06-2018
We did flash the ecu but no serial communication.
Did load boot.hex and set all fuses.
before flash VT could see the ecu?
Maybe there is something wrong with a part of the AT128.
Is there anything else we can tray?
Thank you for fast support
16-06-2018
New Serial connection problem Need help
Box nr. v3/17302 DBW
Car Supersaloon LS2 1000 Nm
End user saved config from old (2017) ecu and uploaded to new ecu.
Perhaps we could review that config ? I will upload it later
was it uploaded to 1.2.31 firmware ?
or 1.2.38 fw ? He did not do a firmware upgrade so believe it is 1.2.31.
Using a new Vemstune, after "upgrade ini from web" ? Was VT "upgrade ini from web" as recent as the fw or newer ? What was the exact VT version ?
I think they used latest stable from 2016 and did not do a ini update.
you know, we could try to reproduce, but the very config would be very essential...
After reboot he could not get serial connection.
GenBoard/Firmware/BootLoaderLoopback is the first to try to go to bootloader (which allows testing serial conn, or verify or upload fw). Helps 99% of cases (even if fw or config uploaded is severely problematic in some way). Can you try it ?
I have tested but no luck.
measure voltage on DSUB9/pin2 (from ECU) and DSUB9/pin3 (from PC), just in case.
replacing any IC (or even disassembling) only (only after some more diagnostics) as a last resort (very rarely necessary)
can we, maybe think of some similar environmental circumstance (high voltage from an USB-RS232 adapter ?) similar to v3/17956 ?
VT says ecu found and when it start to load pages it stops at page 1. Then ecu disconnected - no ecu found.
Replaced max 232 but no luck.
Car and team must be racing at 22-06-2018.
How can we help them ASAP- new ecu-isp firmware flash or any other help will be great.
Do you have ISP hardware ? (eg. "bsd" cable or "usbtiny" cable ?)
I have isp from web shop but newer tested it
https://shop.vems.hu/catalog/cable-p-165.html?osCsid=bc343ebf5ed50a6b3dfd1a78ee563cba
Thank you
Peter