Patent ID: 7586722

Claim:
A high voltage interlock loop (HVIL) control system for an alternative fuel vehicle comprising: a HVIL circuit including a vehicle system controller (VSC) having a HVIL controller in signal communication with a HVIL source line output from the VSC; an inertia switch in signal communication with the HVIL source line and with an associated inertia sense line, and with a HVIL sense line; the HVIL sense line in communication with the VSC, with the HVIL source line and with a HV contactors controller when the HV contactors controller is activated, wherein the HVIL circuit is powered by a vehicle battery that activates the HVIL Circuit to allow the vehicle to operate in either a high voltage (HV) power mode powered by a HV power source or a HVIL interrupt mode based on an operational state of the HVIL circuit.