Abstract: A hybrid vehicle 10 which includes an assembly 13, a low voltage battery 14, and a high voltage battery 12. Particularly, the assembly 13 allows the on board low voltage battery 14 or another low voltage donor battery to recharge the high voltage battery 12 in an efficient manner while concomitantly reducing the likelihood that the high voltage battery 12 will be unnecessarily or inadvertently recharged while concomitantly ascertaining the existence of a fault within the high voltage battery 12 and preventing charge from being communicated to the high voltage battery 12 when such a fault has been detected.

Abstract: A method and an electrical drive assembly 10 which operates in accordance with the method. Particularly, the drive assembly 10 includes a diagnostic portion 18 which compares a voltage signal which is communicated to an electrical machine 28 and a voltage signal which is selected by use of a desired torque command signal 33 and which provides a diagnostic of the electrical drive assembly 10 based upon the comparison, effective to provide a positive indication to a user of the drive assembly.