On board diagnostics

OBD2 connector (plug)

Like all cars, the Elise is fitted with an On board diagnostic, or OBD, connector (socket) tucked away in the passenger foot well.

This can be used to communicate with the cars ECU for retrieving diagnostic information, resetting the MIL or viewing live engine parameters.

DIY

It is quite simple to connect to the cars ECU yourself.

External Links

http://en.wikipedia.org/wiki/On_Board_Diagnostics

http://www.obdii.com/obdii.asp

http://www.scantool.net/