Mislim da se odnosi na to ako je ECU Electronic Control Unit( http://www.acronymfinder.com/ECU.html )

http://www.poslovniforum.hr/rjecnik/englesko-hrvatski/defaul...

http://www.softing.com/home/en/automotive-electronics/produc...

Malo sam se raspitivala, pa ću pokušati da dam prijedlog prilicno slobodnog prevoda.

Pasus ispod objasnjava korake prilikom zamijene ECU-a (Electronic Control Unit), kao i korake za korišnje ECU-ovog moda za samo-dijagnosticiranja.
"How I Replaced The ECU and Ran Diagnostics?...This page is in general how I get to the ECU either to replace it, or to use it to run diagnostic tests on the car."
http://zhome.com/ZCMnL/PICS/ecu/ecu.html

Medjutim, postoje i spoljni uredjaji za dijagnosticiranje koji mogu spadati u tzv. "Authoring" alate/sustave.
"DTS-Venice is the authoring tool in the DTS product family. It enables the specification of ECU communication, data testing as well as data integration and administration within exchange processes on an application-basis."
http://www.softing.com/home/en/automotive-electronics/produc...

Sustina "Authoring" sustava je da oni omogucavaju prolazak kroz odredjeni proces bez posebno strucnog znanja iz te oblasti. Ovde cu ponoviti navode kolege koji je uneo Discussion entry na ovu temu.
"In the development of educational software, an Authoring System is a program that allows a non-programmer to easily create software with programming features. The programming features are built in but hidden behind buttons and other tools, so the author does not need to know how to program. Generally Authoring Systems provide lots of graphics, interaction, and other tools educational software needs."
http://en.wikipedia.org/wiki/Authoring_system

Na osnovu prethodnih navoda, pretpostavljam da je situacija iz primjera slijedeca:
Dok je alat za dijagnosticiranje jos uvek prikljucen, iskljuciti paljenje i zamijeniti ECU prema uputima za uporabu (vodjeni sustavom za dijagnosticiranje).