Power Distribution Modules

There are two power distribution modules (PDAs).

The main PDM is located under the hood on the driver's side above the fender. See Fig.. The main PDM distributes battery power to the vehicle's control modules, and contains the fuses required to protect the power feed circuits to these modules. While the main PDM provides power to the modules, the modules themselves control power flow and circuit protection to the various components of the vehicle's electrical systems. Because of this, traditional PDM devices such as relays and circuit breakers are no longer necessary on the main PDM.

Inside the lid of the fuse box there is a sticker that shows the location of the fuses and describes the circuit(s) that each fuse protects. Fuse configuration will vary depending on the PDM assembly installed. See Fig.. See Table. for descriptions of a typical set of fuses.

The cab PDM is located in the switch panel cavity at the driver's left elbow and handles circuits inside the vehicle, such as heaters, doors, fans, lights, and other interior accessories. See Fig..

Because the electrical system is multiplexed, no relays are needed. The multiplexing module performs the functions normally provided by relays.