Powertrain Control Software: Multiplexing

The increased number of modules on the vehicle dictate a more efficient method of communication. Multiplexing is the process of communicating several messages over the same signal path. This process allows multiple modules to communicate with each other through the signal path (CAN2+/CAN2-). Modules communicate with the PCM using CAN communications, to determine the priority in which the signals are sent. Refer to the High Speed Controller Area Network (CAN) for additional information.