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Summary of change:
'''Safety Mode ''' - prevent engine flooding caused by not following firmware upgrade steps '''Important notes''': * for '''1.1.87 (or newer) firmware use VemsTune 2011-01-14 or newer''' * if you use I-button (=have v3 with "1 wire interface"=yes, own an I-button AND enable it in config) then see ButtonImmobilizer (than not touching on I-button between fw upgrade and config upload will provide similar anti-flood features as this safetymode, so you don't need this page). ---- '''Usage''' - for firmware 1.1.83 (or newer) From firmware version 1.1.83 the '''Injector and ignition outputs are disabled after firmware upload.''' * but '''stepper outputs aren't disabled'''. Lots of cars have ignition coils connected to stepper outputs. IMHO stepper outputs should be disable also. And p259. And specfet. => We'll investigate this. (Isn't this implemented in 1.1.87 already ? gotta check) '''To reenable the ECU:''' * easy way: In '''"firmware upload" press enter''' (not "cancel" !) in the "upload saved config" step. That's all. Nothing special needs to be done in the normal case. '''For advanced users:''' * if you cancelled that step, you can also do it later: '''upload a proper config''' and VemsTune (newer than 2010-11-04) sets automatically. * OR manually: set prohibit/iButton high and low byte manually (do it only if the config on the ECU is verified and totally good) ---- '''Background information:''' - for the curious After firmware upload the config might be absolutely wrong. * '''If the recommended firmware upgrade process was not followed''' (eg. fuses not removed), in the past it could result in injectors open after boot ** => engine flooded with fuel or ignition fuse blown. ** this cannot happen with the correct procedure. But the procedure was inconvenient and some steps sometimes got forgotten. '''Solution:''' '''From firmware version 1.1.83 the Injector and ignition outputs are disabled by default, until they are enabled by''' either * '''a special firmware-version dependant configuration word ''' (named prohibit, 2 bytes) re-enables it ** naturally, after firmware upgrade, this word will be wrong, and need to be set. (VemsTune newer than 2010 november 03 set automatically after config upload). * '''OR''' - if using iButton anti-theft - , enabled by touching on the configured I-Button. ** needless to say, do NOT touch on, until uploading the correct config ---- '''Advanced users''' - will not be needed since VemsTune 2010-11-xx and newer calculates this and sets after config upload. Calculation example for prohibit variables: *bit 15: PS2-type *bit 14..13: 0 not using now *bit 12..10: firmware version first number *bit 9..7: firmware version second number *bit 6..0: firmware version third number *example: **non ps2 1 .1 83: **000 001 001 1010011= 0x04D3 -> prohibit high byte is decimal 4, prohibit low byte is decimal 211 There is a special code to prohibit variables which works with any firmware for developing, Use it only if nothing else works: 0xBEEF * '''ECU calibrations dialog prohibit high,low byte settings:''' * 04, 213 for 1.1.85 (nonps2) * 04, 215 for 1.1.87 (nonps2) * 190, 239 (=0xBEEF) enables inj+ign for any firmware even if no valid config has been uploaded ** therefore not recommended, only use as last resort, because it might flood your cylinders with fuel if config is not uploaded, or after firmware upgrade ** so if you used this BEEF trick, please change this to 0,0 before firmware upgrade, or apply the oldschool precautions: remove injector conn, fuelpump fuse, ignfuse, etc...
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