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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
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