Patent ID: 7977813

Claim:
A machine, comprising a plurality of electronic controllers electrically connected to an electrical power source along a first electrical circuit through a main power relay and along a second electrical circuit through a low current mode relay, and each of the electronic controllers including a processor, a memory and an input/output circuit in communication with another one of the electronic controllers, wherein electrical power provided along the second electrical circuit provides a current draw to the electronic controllers that is less than a current draw provided to the electronic controllers along the first electrical circuit; and a relay controller electrically connected to the electrical power source along a third electrical circuit, the relay controller being in communication with the main power relay and the low current mode relay; wherein the relay controller is configured to open and close the main power relay responsive to an ignition key switch being in an off position and an on position, respectively; the relay controller is configured to open the low current mode relay a time period after the main power relay is opened, and configured to close the low current mode relay in response to the ignition key switch being in an on position, wherein the time period is selected to allow completion of procedures running on the electronic controllers.