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This can be done by connecting a second CAN adapter on the bus, or by using a special logging or sniffing J2534 DLL, which passes through all communication to the device, but also logs to a file.",{"type":104,"tag":112,"props":911,"children":913},{"id":912},"types-of-diagrams",[914],{"type":110,"value":915},"Types of Diagrams",{"type":104,"tag":119,"props":917,"children":918},{},[919],{"type":110,"value":920},"There are usually a few different types of diagrams available. Not every manufacturer will provide all of them, but it's good to know what kinds of diagrams exist.",{"type":104,"tag":922,"props":923,"children":925},"h3",{"id":924},"wiring-diagram",[926],{"type":110,"value":927},"Wiring Diagram",{"type":104,"tag":119,"props":929,"children":930},{},[931],{"type":110,"value":932},"The most common diagram is the Electrical Wiring Diagram (EWD). It shows the wiring between an ECU and various components, along with the connectors and pin numbers. 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