6-18
TROUBLESHOOTING
The following table shows the main presumed troubles if the system or gauge is incorrectly set up,
incorrectly operated, or malfunctioned.
For detail information, see the applicable installation manual and/or the troubleshooting guide.
Symptom
Cause
Measure
Note
Tachometer shows incorrect
engine RPM.
Engine recognition is wrong.
(for multi-applications)
Push SET for 10 seconds to
default the engine number.
Memorize each engine num-
ber again.
See Custom Mode for proce-
dure to set the engine number.
Speedometer or Comb.
Speedometer & Fuel mgt
gauge shows incorrect fuel
level.
Fuel sensor selection is wrong.
Setup the fuel sensor to cor-
rectly resistance.
ABYC sensor: 33-240
Ω
(Default)
Europe sensor: 0-180
Ω
YAMAHA sensor: 5-105
Ω
Fuel mgt gauge shows incor-
rect remaining fuel
Fuel capacity setting is wrong.
(for SQR Fuel mgt Gauge)
Fill the tank with fuel, and set
fuel tank capacity.
Default setting is 50 gallons.
Fuel mgt gauge shows incor-
rect fuel consumption
Engine recognition is wrong.
(for multi-applications)
Default the engine number,
and turn the key switch on in
order from portside engine to
rememorize each engine num-
ber.
See Custom Mode of Tachom-
eter for procedure to setup the
engine number.
Gauge display does not
wakeup.
Electric power is not supplied.
Gauge is damaged.
Replace fuse.
Connect the couplers securely.
Replace the damaged wire or
hub.
Replace the gauge.
Be sure to use 10 amps fuse.
Illumination does not light.
Electric power is not supplied.
Gauge is damaged.
Replace fuse.
Connect the couplers securely.
Replace the damaged wire or
hub.
Replace the gauge.
Be sure to use 10 amps fuse.
Gauge shows “----”.
Digital signal is not received.
Connect the couplers securely.
Replace the damaged bus
wire or hub.
Verify the system with the
optional checker.
Gauge unstably operates.
Resistor is not connected to
the ending hubs.
Connect the gray 6-pin cap to
the ending multi-hubs.
Single hub is included resistor.
Gauge response is poor or
down.
Market obtainable unit con-
nected to the system is failed.
Signal volume has exceeded
50% of the capacity.
Replace the unit.
Remove the heavy signal out-
put unit.
Verify the system with the
optional checker.
Trim gauge always shows fully
tilted up position.
Trim sender signal is not
received.
Connect pink lead connectors
each other.
See the installation manual.
Trim gauge shows incorrect
position.
Initial position setting is wrong.
Trim sender is damaged.
Put the motor in the fully
trimmed-in position, and reset
the initial (zero) trim angle.
Replace the trim sender.
See Custom Mode for proce-
dure to set the fully trimmed-in
angle.
Boat speed and/or Coolant
pressure gauge does not
show.
Optional sensor has not
installed.
Install the optional sensor.
See the instruction supplied
with the sensor kit.
Monitor display of tachometer
remains in the default setting.
Select the coolant pressure
display.
See Custom Mode for proce-
dure to select the display.
Oil pressure is not shown.
Engine does not have the oil
pressure sender.
NA
F50-F100 cannot show the oil
pressure.
Tachometer does not setup to
show the oil pressure.
Select the oil press. display.
See Custom Mode to setup
display.
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