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Home >> Pontiac >> 2007 >> Grand Prix Base >> Repair and Diagnosis (Single Page) >> Body & Frame >> Ignition Switch/Steering Lock >> Wiring Systems & Power Management - Introduction >> Description and Operation >> Power Mode Description and Operation >> Fail-Safe Operation >> Notes

Fail-Safe Operation: Notes

Since the operation of the vehicle systems depends on the power mode, there is a fail-safe plan in place should the power mode master (PMM) fail to send a power mode message. The fail-safe plan covers those modules using exclusively serial data control of power mode as well as those modules with discrete ignition signal inputs.