Depending on the length of time the power was interrupted, your system may require GPS initialization.

If initialization is not necessary, the system proceeds directly to the Startup Confirmation screen.
If the system fails to locate a sufficient number of satellites to locate your position within 10 minutes, the following screen is displayed.

If you are experiencing GPS reception problems:
Throttle Body Disassembly/Reassembly
...
Valve Stem-to-Guide Clearance Inspection
Remove the valves.
Subtract the O.D. of the valve stem, measured with a micrometer, from the
I.D. of the valve guide, measured with an inside micrometer or ball gauge.
Take t ...
Map Input
DEST button
►DEST Menu 2►Map Input
Use the joystick to manually select an icon or a location on the map screen
as the
destination.
You are prompted to define the map area to displ ...