Automotive Diagnostics — Link Control
This service is used to control the communication between the client/tester and server/ECU. This is generally done to gain bandwidth for any diagnostic communication. There can be an option to change the CAN data link layer parameters during a non-default session
The client verified if the ECU supports a particular mode transition mechanism. The client can request for the change in data link parameters only if there was a positive response when the client requested the mode support request previously.