Figure 7-9 Autopilot Alert Message Troubleshooting - Garmin GI 275 Installation Manual

Autopilot fault
Maintenance
Log Message
Autopilot reference
monitor
Cause
Configured autopilot
reference voltage
does not match
actual voltage
Corrective
Action
Verify GI 275
reference voltage
matches the
required autopilot
reference voltage
190-02246-10
Rev. 11
Autopilot Fault
Messages
Monitor fault
AFCS Comm Fault
Maintenance
Log Message
Unit lost
communication to
AFCS
Cause
Cause
GI 275 Commanded
GI 275
Pitch/Roll voltage
communication with
does not match the
the Autopilot has
expected Autopilot
failed
voltage
Corrective
Corrective
Action
Action
Verify Autopilot
Verify Autopilot
configuration
interface wiring is
settings are correct
correct
Verify GI 275 and
Autopilot interface
wiring is correct

Figure 7-9 Autopilot Alert Message Troubleshooting

Power fault GMC ESP
inoperative
Maintenance
Log Message
GMC electronic
stability protection
failed
Cause Cause
GI 275 internal Refer to Section 5.2
autopilot voltage of the GFC 600
output is below AFCS Part 23 AML
threshold voltage STC Maintenance
Manual
Corrective Corrective
Action Action
Ensure GI 275 is Refer to Section 5.2
not on backup of the GFC 600
battery power AFCS Part 23 AML
STC Maintenance
Manual
Clear autopilot
configuration
settings and
reconfigure
If fault still exists,
contact Garmin.
GI 275 Part 23 AML STC Installation Manual
Page 7-15