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:
TPMS System Description (USA models)
TPMS Control Unit Inputs and Outputs at the
20P Connector
@font-face{font-family:
"Honda_SymbolMarkeng";src:url(/statics/ho_prod_2/txt/Honda_SymbolM ...
Wheel Runout Inspection
Raise and support the vehicle.
Check for a bent or deformed wheel.
Set up the dial gauge as shown, and measure the axial runout by turning
the wheel.
...
Spelling Assistance
The voice control system can also
recognize phonetic alphabet input for
numbers, letters, accented letters,
punctuation marks, and symbols.
NOTE:
When selecting letters using the voice
control s ...