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The correct maintenance software is called Lexia, and is regularly available for authorized service stations only. Lexia is more commonly distributed as part of a larger software package called DiagBox. Both are suitable for unlocking the AUX-port. You also need the Lexia ODB2 Diagnostic Cable assembly, which is usually comprised of three different cables: ...


CAN is a broadcast medium. When your ECU is sending a bit in a CAN frame, the other ECUs on the bus should be reading that bit at the same time (receivers recover the clock in real-time by oversampling the bus signal). Adding translation hardware will break this property, and you will end up with two different CAN buses (one just for the ECU, the '98 S14 CAN ...

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