display YAMAHA VX110 2005 Service Manual

E
–+ELEC
INDICATION SYSTEM .................................................................................. 7-48
WIRING DIAGRAM ................................................................................. 7-48
FUSE ....................................................................................................... 7-50
BATTERY ................................................................................................ 7-50
MAIN AND FUEL PUMP RELAY............................................................. 7-50
ECM......................................................................................................... 7-50
ENGINE TEMPERATURE SENSOR ...................................................... 7-50
THERMOSWITCH (ENGINE).................................................................. 7-50
THERMOSWITCH (EXHAUST) .............................................................. 7-50
REMOTE CONTROL UNIT (DELUXE MODEL ONLY) ........................... 7-50
BUZZER .................................................................................................. 7-50
OIL PRESSURE SWITCH ....................................................................... 7-51
MULTIFUNCTION METER...................................................................... 7-51
Multifunction meter ............................................................................ 7-51
MULTIFUNCTION METER REMOVAL ................................................... 7-51
Display function (Sport model only) .................................................. 7-52
Display function (Deluxe model only) ................................................ 7-53
Speedometer display ........................................................................ 7-54
Tachometer display ........................................................................... 7-55
Hour meter display ............................................................................ 7-55
Voltage meter display........................................................................ 7-55
Low oil pressure warning indicator .................................................... 7-55
Fuel level meter display and fuel warning indicator .......................... 7-55
Overheat warning indicator ............................................................... 7-56
Check engine warning indicator ........................................................ 7-56
Diagnostic display ............................................................................. 7-57
REMOTE CONTROL SYSTEM (DELUXE MODEL ONLY) .......................... 7-58
WIRING DIAGRAM ................................................................................. 7-58
REMOTE CONTROL SYSTEM ............................................................... 7-59
Yamaha Security System indicator ................................................... 7-59
Low-rpm mode indicator.................................................................... 7-59
Checking the remote control transmitter ........................................... 7-60
Transmitter registration ..................................................................... 7-62
Replacing of the transmitter battery .................................................. 7-63
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7-10
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–+ELECELECTRICAL ANALYSIS
Low resistance measurement
NOTE:
When measuring a resistance of 10 Ω
or less
using a digital tester, the correct measure-
ment cannot be obtained because of the
tester’s internal resistance.
To obtain the correct value, subtract the
internal resistance from the displayed mea-
surement.
The internal resistance of the tester can be
obtained by connecting both of its terminals.
Correct value =
Displayed measurement –
Internal resistance
Peak voltage measurement
NOTE:
When checking the condition of the ignition
system it is vital to know the peak voltage.
Cranking speed is dependant on many fac-
tors (e.g., fouled or weak spark plugs, a
weak battery). If one of these is defective,
the peak voltage will be lower than specifica-
tion.
If the peak voltage measurement is not
within specification the engine will not oper-
ate properly.
A low peak voltage will also cause compo-
nents to prematurely wear.
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7-19
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–+ELECIGNITION SYSTEM
ENGINE TEMPERATURE SENSOR
1. Measure:
Engine temperature sensor resistance
(at the specified temperature)
Out of specification →
Replace.
Engine temperature sensor
resistance:
20 °C (68 °F): 54.2–69.0 k
Ω
100 °C (212 °F): 3.12–3.48 k
Ω
Measurement steps:
Suspend the engine temperature sensor
in a container filled with water.
Place a thermometer in the water.
Slowly heat the water.
Measure the resistance when the speci-
fied temperature is reached.
SENSOR ASSEMBLY
1. Check:
Intake air temperature sensor
Out of specification →
Replace the sen-
sor assembly.
Checking steps:
Measure the ambient temperature.
Connect a computer to the watercraft and
use the Yamaha Diagnostic System to
display the intake air temperature.
If the ambient temperature and the dis-
played intake air temperature differ by
more than ±
5 °C (±
9 °F), replace the
sensor assembly.
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7-24
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–+ELECIGNITION SYSTEM
THROTTLE POSITION SENSOR
1. Measure:
Throttle position sensor output voltage
Out of specification →
Replace the
throttle body assembly.
Checking steps:
CAUTION:
Do not loosen the throttle stop screw nut
and do not turn the throttle stop screw.
Connect a computer to the watercraft and
use the Yamaha Diagnostic System to
display the “throttle position sensor 1 out-
put voltage”, “throttle valve opening
angle”, and “throttle position sensor 2
output voltage”.
Release the throttle lever to the fully
closed position.
Check the output voltage of throttle posi-
tion sensor 1 and the throttle valve open-
ing angle.
1Throttle position sensor 1
2Throttle position sensor 2
ÈThrottle position sensor output voltage
ÉThrottle valve opening angle
ÊFully closed
ËFully open
NOTE:
The actual throttle position sensor output
voltage and throttle valve opening angle
may vary according to environmental condi-
tions.
Throttle position sensor 1 output
voltage with throttle lever fully
closed:
0.45–0.95 V (reference data)
Throttle valve opening angle with
throttle lever fully closed:
–1.1–9.4° (reference data)
2 ± 0.1 V
0.5 ± 0.05 V 4.65
± 0.05 V
(4.5 V)
(10˚)
É
ÊË È1 2
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7-26
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–+ELECIGNITION SYSTEM
ACCELERATOR POSITION SENSOR
1. Measure:
Accelerator position sensor output volt-
age
Out of specification →
Replace the
accelerator position sensor.
Checking steps:
Connect a computer to the watercraft and
use the Yamaha Diagnostic System to
display the “accelerator position sensor
1” and “accelerator position sensor 2”.
Release the throttle lever to the fully
closed position.
Check that the accelerator position sen-
sor 1 and 2 output voltage.
NOTE:
The actual accelerator position sensor out-
put voltage and throttle valve opening angle
may vary according to environmental condi-
tions.
Accelerator position sensor 1
output voltage at throttle lever
fully closed position:
0.50–0.90 V
Accelerator position sensor 2
output voltage at throttle lever
fully closed position:
0.35–1.05 V
Throttle valve opening angle at
throttle lever fully closed
position:
2.7–4.8°
Squeeze the throttle lever to the fully
open position and hold it.
Check that the accelerator position sen-
sor 1 and 2 output voltage.
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7-47
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–+ELECOFF THROTTLE STEERING SYSTEM
STEERING SENSOR
1. Check:
Steering sensor
Malfunction → Replace the steering
sensor.
Checking steps:
Turn the handlebar all the way to the left
or right, and then release it.
Install a plastic tie 1 loosely around the
center of the handlebar grip as shown.
Hook a spring gauge 2 onto the plastic
tie.
Hold the spring gauge at a 90° angle
from the handlebar, and then pull the
spring gauge with a force of 10 kgf
(22 lb).
When handlebar
pulledWhen handlebar
not pulled
ON OFF
Check that the following is displayed in
the “Engine Monitor” window of the
Yamaha Diagnostic System.
Use the same procedure to check that
the steering sensor operates correctly
when the handlebar is turned to both the
left and right. Replace the steering sen-
sor if it is a malfunction.
1
2
ECM
Refer to “IGNITION SYSTEM”.
PICKUP COIL
Refer to “IGNITION SYSTEM”.
THROTTLE POSITION SENSOR
Refer to “IGNITION SYSTEM”.
ACCELERATOR POSITION SENSOR
Refer to “IGNITION SYSTEM”.
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7-52
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–+ELEC
Display function (Sport model only)
1. Check:
Display function
Does not operate → Replace the multi-
function meter.
L/BB
B/YR/WB/Y
PB/G
R/W
YY
RR
WW
B
B
B/G
P L/R
R
BR1
2
3
4L/B
L/R
1Buzzer
2Speed sensor
3ECM
4Fuel senderB: Black
P: Pink
R: Red
W: White
Y : YellowB/G : Black/green
B/Y : Black/yellow
L/B : Blue/black
L/R : Blue/red
R/W : Red/white
INDICATION SYSTEM
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7-53
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–+ELEC
Display function (Deluxe model only)
1. Check:
Display function
Does not operate → Replace the multi-
function meter.
1Remote control unit
2Buzzer
3Speed sensor
4ECM
5Fuel senderB: Black
Gy : Gray
P: Pink
R: Red
W: White
Y : Yellow
B/G : Black/greenB/L : Black/blue
B/Y : Black/yellow
L/B : Blue/black
L/R : Blue/red
L/Y : Blue/yellow
R/W : Red/white
INDICATION SYSTEM
B/LB
L/R
B/YR/WB/Y
PB/G
R/W
YY
RR
WW
B
B
B/G
P L/R
R
BR
1
2
3
4
5
Gy
L/B
L/R
L/Y
L/B
B/L
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7-54
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–+ELECINDICATION SYSTEM
Speedometer display
1. Check:
Speedometer display
Does not display → Measure the speed
sensor output voltage and pulses.
2. Measure:
Speed sensor output voltage and pulses
Out of specification → Repair or
replace.
Within specification → Replace the mul-
tifunction meter.
Speed sensor output voltage
(dependant on the paddle wheel
position):
Less than 400 mV/
More than 11.6 V
Output pulse:
2 pulses/one-full turn
Measurement steps:
Apply DC 12 volts to the natural color
three-pin connector (between the red/yel-
low and black/yellow leads).
Rotate the paddle wheel by hand and
measure the voltage between the black/
yellow and yellow leads.
NOTE:
As the paddle wheel is rotated, a square-
wave voltage signal a is produced.
Two pulses occur every time the paddle
wheel makes one-full turn.
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7-55
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–+ELECINDICATION SYSTEM
Tachometer display
1. Check:
Tachometer display
Does not display → Check the engine
speed using the “Engine monitor” of the
Yamaha Diagnostic System.
Replace the multifunction meter.
Hour meter display
1. Check:
Hour meter display
Does not display → Replace the multi-
function meter.
Voltage meter display
1. Check:
Voltage meter display
Does not display → Check the battery
voltage using the “Engine monitor” of
the Yamaha Diagnostic System.
Replace the multifunction meter.
Low oil pressure warning indicator
1. Check:
Low oil pressure warning indicator
Does not come on → Check the oil pres-
sure switch using the “Engine monitor”
of the Yamaha Diagnostic System.
Replace the multifunction meter.
Fuel level meter display and fuel warning
indicator
1. Check:
Fuel level meter display and fuel warn-
ing indicator
Do not display → Measure the fuel
sender resistance.
If the fuel sender resistance is within
specification, replace the multifunction
meter.
2. Measure:
Fuel sender resistance
Refer to “FUEL CONTROL SYSTEM”.
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