The PCS transfer case module is a stand-alone module that controls most modern electronic shift transfer cases. Shifting is commanded using CAN, which is configurable for J1939 or a proprietary scheme. Diagnostic messages are also transmitted to alert the driver if there are any issues with the transfer case. The control module has programmable safety set points for shifting into 4WD Low including max speed, gear, and brake status. The module is designed for rugged use and is sealed to IP68 ingress protection standards allowing it to be mounted anywhere on the vehicle, fully exposed to harsh environments.