Fault isolation, prognosis, and mitigation for vehicle component electrical power circuit

A system comprising:

• a fault detection module configured to:
• communicate with a power circuit supplying power to a subsystem of a vehicle, wherein the power circuit comprises a power source and a plurality components that connect the power source to the subsystem;
• receive N sets of measurements from the power circuit and the subsystem, where N is an integer greater than 1, and wherein each set of the N sets includes voltages at an output of the power source and at an input of the subsystem;
• detect a first fault indicating a power source failure based on the voltage at the output of the power source;
• detect a second fault indicating a permanent disconnection of one of the components from the power source based on a difference between the voltages at the output of the power source and at the input of the subsystem being greater than a first threshold for all the N sets;
• and
• detect a third fault indicating an intermittent disconnection of one of the components from the power source based on the difference being greater than a second threshold for M of the N sets, where 1≤M<N;
• and
• a fault mitigation module configured to:
• mitigate the first and second faults by switching to a different power source in the vehicle to supply power to the subsystem;
• and
• mitigate the third fault by reducing the power consumed by the subsystem and by generating a warning regarding the intermittent disconnection.