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:
Secondary HO2S Replacement
Special Tools Required
O2 Sensor Wrench Snap-on S6176 or equivalent, commercially available
Disconnect the secondary HO2S connector (A).
Raise the vehicle on a lift.
...
Auxiliary Input Jack
Use the jack to connect standard audio devices.
1. Open the AUX cover.
2. Connect a standard audio device to the
input jack using a 1/8 inch (3.5 mm) stereo
miniplug.
► The audio system a ...
Auxiliary Input Jack
U.S. Sport and all Canadian models
The auxiliary input jack is underneath the accessory power socket in the center
pocket. The system will accept auxiliary input from standard audio accessories.
...