1. A system of a vehicle, comprising: first, second, and third processor modules that selectively execute a test having N test states while an ignition system of the vehicle is off, wherein N is an integer greater than one and the N test states each include: the first processor module setting a first output to a first predetermined value for one of the N test states; the second processor module setting a second output to a second predetermined value for the one of the N test states; the third processor module selling a third output to a third predetermined value for the one of the N test states; a predetermined expectation for the one of the N test states; and at least one of the first, second, and third processor modules indicating a fault when a fourth output is different than the predetermined expectation; and a control module that sets the fourth output based on the first, second, and third outputs.