Which terminal on the data link connector is used for Class 2 communication by General Motors?

The terminal used for Class 2 communication in General Motors vehicles is indeed terminal 2 on the data link connector (DLC). Class 2 communication is a protocol that enables various electronic modules in a vehicle to communicate with one another over a shared data bus. This protocol is critical for the proper functioning of systems such as engine control, transmission control, and body control.

Terminal 2 is specifically designated for this purpose in General Motors vehicles, allowing for serial data exchange. Understanding the layout and functions of the data link connector is essential for performing diagnostics and troubleshooting in automotive electrical systems. By knowing that terminal 2 handles Class 2 communication, technicians can efficiently connect diagnostic tools to access vehicle data and troubleshoot issues effectively.

The other terminals on the DLC serve different functions, such as providing power or ground connections, or serving other communication protocols, which are not specifically tied to Class 2 communication. Therefore, recognizing the significance of terminal 2 is crucial for anyone involved in automotive diagnostics or repair related to General Motors vehicles.