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Summary of change:
Mot55 AAN ECU (srl aan/21204) related information. A customer has a problem with his new 2022-02 Vems mot55 AAN ECU (srl aan/21204) Most likely it is at Marcus currently. '''Please note: the way to get technical support is to summarize circumstances and your exact findings on THEMATICALLY editable page''' (not email; email is not guaranteed to arrive, not editable after sending so might contain outdated information (worse: there might be other newer versions that just waste time by having to be merged manually or might have not arrived and waste even more time or cause great confusion - a completely wrong way no matter how widely it is used), a waste of time, and not supported. Sending to arbitrary email address is especially not supported and might me neglected. ---- '''Circumstances - PLEASE FILL''' First of all, please check VemsTuneVersion, especially * '''"Help/update ini files from web"''' ** Has that been done before "firmware upload" ? ** Use the Tools/"firmware upload" (not the "firmware upgrade wizard") if you have problems. ---- '''What happened before ?''' * please fill '''What happened last, before the symptom occured?''' * please fill '''Symptom''' When connected to VemsTune it say's: '''"Boot mode detected. Please, choose an options.''' * ('''Choose Stay for firmware upload/verify.''') Tried to install a new (???) firmware (please provide correct information. What exact firmware version?), but the '''vems keeps turning off''' Is insert a fuse for power supply faulty? What can i check? any idea? What do you mean "keeps turning off" ? * '''Vems cannot turn off by itself.''' ** '''ECU can be turned off by removing the 12V supply externally !''' If firmware upload stops (fails midway ... after how many pages ?), it is * '''most likely USB-RS232 adapter or USB-RS232 adapter windows driver problem''' * '''RS232 connection or GND connection problem''' ** '''try with notebook running from battery''', NOT powered by AC ! (that can cause communication problems) * some problem with the +12V supply. Battery or harness problem ? Fix the harness so that the ECU gets good supply * retry the firmware upload (possibly several times if necessary). ** If the firmware upload fails repeatedly multiple times despite good supply, good connection, perfect USB-RS232 and good windows driver, notebook running from battery, it is possible that some damage occured. ** Eg. excessive static electricity, or xray, or cosmic or other radioactive source, serious overvoltage, or short or excessive overload of outputs or other damage. * GenBoard/Firmware/BootLoaderLoopback can be tried especially if no "Boot mode detected" message. ** if "Boot mode detected", then already in boot mode so RS232 serial port loopback will not help.
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