Diesel 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 (CAN2H/CAN2L). Modules communicate with the PCM using SCP or CAN communications, which determines the priority in which the signals are sent. Refer to STANDARD CORPORATE PROTOCOL (SCP)  or HIGH SPEED CONTROLLER AREA NETWORK (CAN)  for additional information.