Error and Warning Messages
Error Message
Cause
Autopilot Action
ECU Voltage is Low
The steering actuator supply voltage has fallen
below 10 Vdc for longer than 6 seconds.
Continues in normal
operation
Autopilot is not receiving
navigation data. Autopilot
placed in Heading Hold.
The autopilot is no longer receiving valid naviga
tion data while performing a Route To maneuver.
This message also appears if navigation is
stopped on a chartplotter before the autopilot is
disengaged.
Autopilot transitions to
heading hold
Connection with Autopilot
Lost
The helm control has lost connection with the
CCU.
N/A
Low GHC
™
Supply Voltage
The supply voltage level has fallen below the
value specified in the low voltage alarm menu.
N/A
Error: ECU High Voltage
The steering actuator supply voltage has risen
above 33.5 Vdc
The ECU shuts down
Error: ECU Voltage has
Dropped Rapidly
The ECU voltage has dropped quickly below
7.0 Vdc.
The error is cleared when
the ECU voltage rises
above 7.3 Vdc.
Error: ECU High Temperature
The ECU temperature has risen above 100°C
(212°F ).
The ECU shuts down
Error: Lost Communication
Between ECU and CCU (when
the autopilot is engaged)
Communication between the CCU and the ECU
has timed out.
The helm control or chart
plotter beeps, and the
autopilot transitions to
standby.
Contacting Garmin Support
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• In Europe, call +44 (0) 870 850 1241.
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