Figure 4-25 Eis Gauge Troubleshooting - Garmin G600 Maintenance Manual

Loss of RPM
Unstable
RPM
Cause
Resistor failure
OR Resistor failure
Poor connection
OR Poor connection
Interference
Corrective
Action
Disconnect P-Lead
Disconnect P-Lead
signal wires at
signal wire at both
both ends. Verify
ends of suspect mag.
wire is more than
Verify wire is more
400KOhms.
than 400 KOhms.
Replace wire and
Replace wire and
parallel resistors if
parallel resistors if less
less than
than 400KOhms.
400KOhms.
Verify wiring and
connections
Verify wiring and
Route signal wires
away from spark
plug leads and
power wires
190-01717-B1
Rev. 1
RPM is
erratic during
during mag.
engine start/
check
cranking
Cause Cause
Starting vibrator is
installed. Normal
OR
operation with P-
Lead RPM input.
Corrective Corrective
Action Action
None
connections

Figure 4-25 EIS Gauge Troubleshooting

EIS Gauges
Fuel quantity
Fuel totalizer
gauge
inaccurate
inaccurate
Cause
Cause
Poor connection
Fuel flow requires
OR
calibration
Fuel probe
malfunction
OR
Probe out of
calibration
Corrective
Action
Corrective
Action
Calibrate fuel flow.
Limited to 15% in
GDU Normal
Verify wiring and
Mode. More
connections
adjustment will
require a different
K-Factor.
Replace fuel probe
Replace fuel flow
transducer
Recalibrate fuel
tank probes
Fuel flow Manifold
indication pressure
unstable unstable
Cause Cause
Poor connection Pressure line drain
OR plugged/line blocked
Air/contamination in the
OR
sensor
Sensor failure
OR
Incorrect sensor config.
OR
Corrective
Interference
Action
Corrective
Verify manifold
Action
pressure line vent
(if installed) is
clear.
Verify wiring and
Verify fuel is not
connections
trapped in the
manifold pressure
line.
Purge fuel lines of
air, verify sensor
orientation, clean
the sensor.
Replace manifold
pressure sensor
Configure sensor with
'Hi' filtering option
Route wires away
from spark plug leads
and power wires,
install EMI shield
Replace fuel flow
transducer
G500/G600 TXi Part 23 AML STC Maintenance Manual
Manifold
pressure
inaccurate
Cause
Pressure line
blocked
OR
Sensor out of cal.
OR
Sensor failure
Corrective
Action
Verify manifold
pressure line is
clear.
Recalibrate
manifold pressure
sensor (brass
sensor only)
Replace manifold
pressure sensor
If fault still exists,
contact Garmin.
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