Controller Area Network (CAN2)
WARNING: This page is about a different car, the 2012 Ford Pickup, 2012 Ford F550 Super Duty, 2012 Ford F450 Super Duty, and 2012 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
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 HIGH/CAN2 LOW). The glow plug control module (GPCM) and nitrogen oxides (NOx) modules communicate with the PCM using CAN2 communications, to determine the priority in which the signals are sent. Refer to the CONTROLLER AREA NETWORK (CAN) for additional information.