Garmin Approach G5 - GPS-Enabled Golf Handheld, Install Manual & Pilot'S Manual

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Garmin G5 Install Manual & Pilot's Guide 190-02072-00 Rev. E
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Unit Installation
Installation Manual
Pilot's Guide
Appendix
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(which is indicative of an invalidated output)?
3)
What was the aircraft doing in the two minutes that preceded the failure
(taxing on the ground, flying straight-and-level flight, turning, climbing,
etc.)? If the problem occurred on the ground, was it within 100 feet of a
hanger using GPS repeaters?
4)
How long did the failure last? Was it brief or sustained? Was it repetitive
in nature? If it was repetitive, about how many times did it happen? Did it
happen on more than one day?
5) Was the problem correlated with a specific maneuver or a specific
geographic area?
6) Can the problem be repeated reliably?
7)
Did the onset of the problem occur shortly after a software upload to the
G5?
8)
Was there a loss of the GPS position lock?
1.9.6 HEADING FAILURE TROUBLESHOOTING (WITH GMU 11)
If a Red-X (steady or intermittent) is displayed in the heading field on the G5, check
the following while the aircraft is on the ground:
1) When taxiing, heading performance is susceptible to the presence of
magnetic anomalies (metal buildings, underground steel culverts, steel
grates in the ramp, rebar, etc.). Localized sources of interference on the
ground may consistently cause a Red-X to be displayed on the heading in
the same location while taxiing; this is not caused by a failure of the
GMU 11 or its calibration.
2)
If any new equipment has been installed on the aircraft, conduct the
magnetometer interference test procedure (see Section 1.8.4.5.6) to see if
the new equipment is causing magnetic interference with the GMU 11.
3) With the G5 in configuration mode, select the Device Information page and
verify there is a green checkmark next to MAG. If there is a Red-X next to
MAG, inspect and verify the CAN bus wiring between the G5 and GMU 11.
See the CAN bus troubleshooting steps in Section 1.2.2.2.6.
4)
If the problem persists, replace the GMU 11 with a known good unit.