Garmin G1000 Nxi System Maintenance Manual page 210

Failure Message
LOI – GPS integrity lost.
Crosscheck with other NAVS.
GPS NAV LOST – Loss of GPS
navigation. Insufficient satellites.
GPS NAV LOST – Loss of GPS
navigation. Position error.
GPS NAV LOST – Loss of GPS
navigation. GPS fail.
GIA Cooling Alerts
Failure Message
GIA1 COOLING – GIA1
temperature too low.
GIA2 COOLING – GIA2
temperature too low.
GIA1 COOLING – GIA1 over
temperature.
GIA2 COOLING – GIA2 over
temperature.
G1000 NXi System Maintenance Manual
King Air 300 Series
190-00716-N1
Cause
If the primary receiver is a WAAS
sensor, the alert indicates that
GPS position data has timed out.
There is no GPS position fix
available or the system is in dead
reckoning mode.
The G1000 has detected an
internal position warning has
occurred.
The G1000 has detected a GPS
engine failure.
Cause
GIA1 operating temperature is too
low.
GIA2 operating temperature is too
low.
GIA1 has exceeded its operating
temperature range.
GIA2 has exceeded its operating
temperature range.
Solution
•
Verify the area the aircraft was
traveling through did not have loss
of GPS coverage. FAA NOTAMs
may be issued for periods of
outages, or the US Coast Guard
website
http://navcen.uscg.gov/pdf/gps/gpsn
otices/GPS_Interference.pdf
have notices posted.
•
Using the MFD Aux – GPS Status
page, verify the signal strength bars
are not erratic. If so, this indicates
outside interference is affecting the
GPS receivers. Find and remove
the source of interference (i.e. cell
phones, FBO datalink antennas,
etc.).
•
If GPS receivers cannot acquire a
position lock, troubleshoot per the
"Will not acquire satellites" section.
Solution
Allow unit to warm up.
Allow unit to warm up.
•
Check fan, wiring and air tubing for
proper operation (if applicable).
•
Replace cooling fan if unable to
determine if operating correctly.
•
Replace GIA1.
•
If problem persists, contact Garmin
Aviation Product Support for
assistance.
•
Check fan, wiring and air tubing for
proper operation (if applicable).
•
Replace cooling fan if unable to
determine if operating correctly.
•
Replace GIA2.
•
If problem persists, contact Garmin
Aviation Product Support for
assistance.
will
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