Figure 5-5 Gnx 375 Traffic Alert Troubleshooting - Garmin GPS 175 Maintenance Manual

ADS-B traffic
alerting function
inoperative.
Maintenance
Log Message
reports ADS-B
traffic alerting
function inoperative.
TSAA application is
unavailable.
Corrective
Verify ADS-B In
traffic is properly
configured.
Ensure the aircraft
has a clear
view of the sky.
Reload software
and reconfigure
190-02207-A2
Rev. 3
ADS-B traffic
function
inoperative.
Maintenance
Log Message
GNX 375
GNX 375
reports ADS-B
In Traffic has failed.
Cause Cause
The 978 MHz and 1090
MHz Receiver internal
tests have failed.
OR
ADS-B In
Electrical Fault
OR
All installed applications
are reporting unavailable.
Corrective
Action Action
Inspect all wiring
and coaxial
cables.
Verify antenna is
compatible.
Reload software
and reconfigure
unit. unit.

Figure 5-5 GNX 375 Traffic Alert Troubleshooting

GNX 375 Traffic Alerts
Traffic/FIS-B
UAT traffic/FISB
functions
receiver fault.
inoperative.
Maintenance
Log Message
GNX reports traffic/FIS-B
functions inoperative:
<condition>
Cause Cause
ADS-B In Calibration Data
978 MHz Receiver internal
Fault
test has failed.
OR
SW Fault
Corrective Corrective
Action Action
Inspect
compatibility of
transponder
antenna and
connections.
Reload software Reload software
and reconfigure and reconfigure
unit. unit.
GPS 175/GNX 375/GNC 355 Part 23 AML STC Maintenance Manual
1090ES traffic
receiver fault.
Cause
1090 MHz Receiver
internal test has failed.
Corrective
Action
Inspect
compatibility of
transponder
antenna and
connections.
Reload software
and reconfigure
unit.
If faults still exist,
contact Garmin.
Page 5-11