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:
Resuming Your Trip
Stop your vehicle en route (e.g., to rest, stop for gas, etc.), and then
continue on
your route.
If you did not complete your route, the Continue Trip screen is displayed when
you
restart you ...
High-Mount Brake Light Bulb
High-mount brake light bulb is a LED type. Have an authorized Honda dealer
inspect
and replace the light bulb. ...
Fuel and Emissions System Description - Electronic Throttle Control System
Electronic Throttle Control System
The throttle is electronically controlled by the electronic throttle
control system (ETCS). Refer to the system diagram to see a functional
layout of the ...