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:
Customer Service Information
Honda dealership personnel are trained professionals.
They should be able to answer all your questions. If you encounter a problem
that
your dealership does not solve to your satisfaction, pleas ...
Coolant Replacement
Wait until the engine is cool, then carefully remove the radiator cap.
Remove the splash shield.
Loosen the drain plug (A), and drain the coolant.
Rem ...
Clutch Pedal, Clutch Pedal Position Switch, and Clutch Interlock Switch
Adjustment (M/T)
NOTE:
For a cruise control problem, check the clutch pedal position switch.
For a clutch interlock operation problem, check the clutch interlock
switch.
Remove the driver' ...