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:
Honda Automobile Customer Service Contact Information
Honda Navi
American Honda Motor Co., Inc.
Honda Customer Service
Mail Stop 500-2N-7E
1919 Torrance Blvd.
Torrance, CA 90501-2746
Tel: (800) 999-1009
Fax: (310) 783-3273 ...
Splash Shield Replacement
NOTE:
Put on gloves to protect your hands.
Take care not to scratch the body.
Remove the splash shield (A).
From the wheel arch on both sides, remove the clips (B) ...
Throttle Body Cleaning
caution
Do not insert your fingers into the installed throttle body when you
turn the ignition switch to ON (II) or while the ignition switch is in
ON (II). If you d ...