Box nr. v3/17302 DBW
No serial connection
Orig spec (oid13684) - for replacement to be made (please check. It is more important to check and confirm spec, than sending old device to HU)
ECU VEMS V3
- MAP connection: 115kPa (6/4mm pneumatic)
- ignition driver: 0 IGBT
- primary_trigger: HALL
- secondary_trigger: HALL
- EGT input: 2
- ETC BridgeOutput_Interface: 1 (used with standard BridgeOutputDriver , SSC6 conn ?)
- Knock input channels: 2
- Flyback: HighZ-only 30V flyback
- mounting-style: flanged case
- Hi-side PFET outputs: 0
- withSDcard: no
- LCD connection: no
- 1-wire interface: no
05-07-2018
I think this AVR is dead and i can think of to solutions to get the car running:
1. I send the box to .hu for repair express
2. vems.hu send a replacement box asap
What do you think?
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 ?
Was this in bootloader mode apparently? Or ... Yes loaded bootloader.Hex ISP and Measurement is made after this.
- Measured c7 = 4,9V good
- Measured c5 = 0V (AVR pin62 AREF) hmm... Should go up when firmware starts
- Was this in bootloader mode apparently? Or ...? Any sign of ECU actuating (eg misc outputs, or LCD, or inj / ign ?) ?
Is there anything else I can try?
- Supply current (thru EC36/pin25) = ... mA Measured 0,13A
- This INDICATES (strongly suggests) v3 is in bootloader mode. It is easy to upload fw. See GenBoard/Firmware/BootLoaderLoopback
- new device being manufactured and sent before old arrives (you can keep old for +1..2 months, some chance it turns out in the meantime that it's just fw to be uploaded, or accidental short or similar happened during home-disassemble, or something simple), so take your time
- easiest to remove the fuse and close with the DVM in 2A or 20A mode
- MAX232 / Pin6 (C57, -8V expected) Measured -7,60V
- MAX232 / Pin2 (C60, +8V expected) Measured 8,60V
- MAX232 / Pin1-3 and 4-5 are "pumping", can only be measured with scope, not with DVM (but not interesting if pin2 and pin6 are good.
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