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:
Mainshaft Bearing and Oil Seal Replacement (M/T)
Special Tools Required
Driver Handle, 15 x 135L 07749-0010000
Bearing Driver Attachment, 37 x 40 mm 07746-0010200
Bearing Driver Attachment, 52 x 55 mm 07746-0010400
Adjustable Bearing Puller, ...
Driving
This chapter discusses driving, refueling, and information on items such as
accessories. ...
Accessories and Modifications
Modifying your vehicle, or installing some non-Honda accessories, can make it
unsafe. Before you make any modifications or add any accessories, be sure to read
the following information.
Accessor ...