warning YAMAHA WR 450F 2016 Manual PDF
[x] Cancel search | Manufacturer: YAMAHA, Model Year: 2016, Model line: WR 450F, Model: YAMAHA WR 450F 2016Pages: 426, PDF Size: 10.86 MB
Page 375 of 426
FUEL INJECTION SYSTEM
9-45
2 Installed condition of lean an-gle sensor. Check the installed direction
and condition of the sensor. Push the start switch.
Fault code number is not dis-
played
Service is finished.
Fault code number is dis-
played Go to item 3.
3 Defective lean angle sensor. Execute the diagnostic mode. (Code No. 08)
Replace if defective.
Refer to “CHECKING THE
LEAN ANGLE SENSOR” on
page 9-75.Push the start switch.
Fault code number is not dis-
played
Service is finished.
Fault code number is dis-
played Go to item 4.
4 Malfunction in ECU. Replace the ECU.
Fault code No. 33
Item Ignition coil: open or short circuit detected in the primary lead
of the ignition coil.
Fail-safe system Unable to start engine
Unable to drive vehicle
Diagnostic code No. 30
Actuation Actuates the ignition coil five times at one-second intervals.
The engine trouble warning light and the “WARNING” on the
Yamaha diagnostic tool screen come on each time the ignition coil
is actuated.
Procedure Check that a spark is generated five times.
• Connect an ignition checker.
Item Probable cause of malfunc-
tion and check Maintenance jobConfirmation of service
completion
1 Connection of ignition coil coupler.
Check the locking condition
of the coupler.
Disconnect the coupler and
check the pins (bent or bro-
ken terminals and locking
condition of the pins). Improperly connected
Connect the coupler securely
or repair/replace the wire har-
ness. Start the engine and let it idle
for approximately 5 seconds.
Fault code number is not dis-
played
Service is finished.
Fault code number is dis-
played Go to item 2.
2 Connection of wire harness ECU coupler.
Check the locking condition
of the coupler.
Disconnect the coupler and
check the pins (bent or bro-
ken terminals and locking
condition of the pins). Improperly connected
Connect the coupler securely
or repair/replace the wire har-
ness. Start the engine and let it idle
for approximately 5 seconds.
Fault code number is not dis-
played
Service is finished.
Fault code number is dis-
played Go to item 3.
Fault code No.
30
Item Latch up detected.
Page 377 of 426
FUEL INJECTION SYSTEM
9-47
TIP
Disconnect the fuel pump coupler when this diagnostic tool is used.
Fault code No. 39
Item Injector: open or short circuit detected.
Fail-safe system Unable to start engine
Unable to drive vehicle
Diagnostic code No. 36
Actuation Actuates injector five times at one-second intervals.
The engine trouble warning light and the “WARNING” on the
Yamaha diagnostic tool screen come on each time the injector is
actuated.
Procedure Check that injector is actuated five times by listening for the oper-
ating sound.
Item Probable cause of malfunc-
tion and check Maintenance jobConfirmation of service
completion
1 Connection of injector cou- pler.
Check the locking condition
of the coupler.
Disconnect the coupler and
check the pins (bent or bro-
ken terminals and locking
condition of the pins). Improperly connected
Connect the coupler securely
or repair/replace the wire har-
ness. Execute the diagnostic mode
(Code No. 36).
No operating sound
Go to
item 2.
Operating sound Go to
item 6.
2 Defective injector. Measure the fuel injector re- sistance.
Replace if out of specifica-
tion.
Refer to “CHECKING THE
FUEL INJECTOR” on page 9-
81.Execute the diagnostic mode
(Code No. 36).
No operating sound
Go to
item 3.
Operating sound Go to
item 6.
3 Connection of wire harness ECU coupler.
Check the locking condition
of the coupler.
Disconnect the coupler and
check the pins (bent or bro-
ken terminals and locking
condition of the pins). Improperly connected
Connect the coupler securely
or repair/replace the wire har-
ness. Execute the diagnostic mode
(Code No. 36).
No operating sound
Go to
item 4.
Operating sound Go to
item 6.
4 Wire harness continuity. Open or short circuit Re-
place the wire harness.
Between injector coupler and
ECU coupler.
red/black–red/black
red–red/blue Execute the diagnostic mode
(Code No. 36).
No operating sound
Go to
item 5.
Operating sound Go to
item 6.
5 Malfunction in ECU. Replace the ECU. —
6 Delete the fault code. — Start the engine and let it idle for approximately 5 seconds.
Check that the fault code
number is not displayed.
Page 397 of 426
ELECTRICAL COMPONENTS
9-67
EAS27990CHECKING THE BULBS AND BULB SOCK-
ETS
TIP
Do not check any of the lights that use LEDs.
Check each bulb and bulb socket for damage
or wear, proper connections, and also for con-
tinuity between the terminals.
Damage/wear Repair or replace the bulb,
bulb socket or both.
Improperly connected Properly connect.
No continuity Repair or replace the bulb,
bulb socket or both.
Types of bulbs
The bulbs used on this v ehicle are shown in the
illustration on the left.
• Bulbs “a” and “b” are used for the headlights
and usually use a bulb holder that must be de-
tached before removing the bulb. The majority
of these types of bulbs can be removed from
their respective socket by turning them coun-
terclockwise.
• Bulbs “c” is used for turn signal and can be re- moved from the socket by pushing and turn-
ing the bulb counterclockwise.
Checking the condition of the bulbs
The following procedure applies to all of the
bulbs.
1. Remove: •Bulb
EWA
WARNING
Since the headlight bulb gets extremely hot,
keep flammable products and your hands
away from the bulb until it has cooled down.
ECA
NOTICE
• Be sure to hold the socket firmly when re-moving the bulb. Never pull the lead, oth-
erwise it may be pulled out of the terminal
in the coupler.
• Avoid touching the glass part of the head- light bulb to keep it free from oil, otherwise
the transparency of the glass, the life of
the bulb, and the luminous flux will be ad-
versely affected. If the headlight bulb gets
soiled, thoroughly it with a cloth moist-
ened with alcohol or lacquer thinner.
2. Check: • Bulb (for continuity)(with the pocket tester)
No continuity Replace.
TIP
Before checking for continuity, set the pocket
tester to “0” and to the “ 1” range.
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a. Connect the positive tester probe to terminal
“1” and the negative tester probe to terminal
“2”, and check the continuity.
b. Connect the positive tester probe to terminal “1” and the negative tester probe to terminal
“3”, and check the continuity.
c. If either of the readings indicate no continu- ity, replace the bulb.
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Pocket tester90890-03112
Analog pocket tester YU-03112-C
Page 398 of 426
ELECTRICAL COMPONENTS
9-68
Checking the condition of the bulb sockets
The following procedure applies to all of the
bulb sockets.
1. Check:• Bulb socket (for continuity)(with the pocket tester)
No continuity Replace.
TIP
Check each bulb socket for continuity in the
same manner as described in the bulb section;
however, note the following.
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a. Install a good bulb into the bulb socket.
b. Connect the pocket tester probes to the re-
spective leads of the bulb socket.
c. Check the bulb socket for continuity. If any of
the readings indicate no continuity, replace
the bulb socket.
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EAS2GC1385CHECKING THE FUSES
The following procedure applies to all of the
fuses.
ECA
NOTICE
To avoid a short circuit, always turn off the
meter when checking or replacing a fuse.
1. Remove: • Side cover (left/right)
• SeatRefer to “GENERAL CHASSIS” on page 5-
1.
2. Check: • Main fuse “1”
• Radiator fan motor fuse “2”
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a. Connect the pocket tester to the fuse and check the continuity.
TIP
Set the pocket tester selector to “ 1”.
b. If the pocket tester indicates “ ”, replace the
fuse.
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3. Replace: • Fuse
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a. The meter light goes off.
b. Install a new fuse of the correct amperage rating.
c. Turn on the meter light to verify if the electri- cal circuit is operational.
d. If the fuse immediatel y blows again, check
the electrical circuit.
EWA
WARNING
Never use a fuse with an amperage rating
other than that specified. Improvising or us-
ing a fuse with the wrong amperage rating
may cause extensive damage to the electri-
cal system, cause the lighting and ignition
systems to malfunction and could possibly
cause a fire.
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Pocket tester 90890-03112
Analog pocket tester YU-03112-C
1
Pocket tester90890-03112
Analog pocket tester YU-03112-C
Fuses Amper-
age rating Q’ty
Main 15 A 1
Spare 15 A 1
Radiator fan motor 5 A 1
2
Page 399 of 426
ELECTRICAL COMPONENTS
9-69
4. Install:• Seat
• Side cover (left/right)Refer to “GENERAL CHASSIS” on page 5-
1.
EAS2GC1386CHECKING AND CHARGING THE BATTERYEWA
WARNING
Batteries generate explosive hydrogen gas
and contain electrolyte which is made of
poisonous and highly caustic sulfuric acid.
Therefore, always follow these preventive
measures:
• Wear protective eye gear when handling or working near batteries.
• Charge batteries in a well-ventilated area.
• Keep batteries away from fire, sparks or
open flames (e.g., welding equipment,
lighted cigarettes).
• DO NOT SMOKE when charging or han- dling batteries.
• KEEP BATTERIES AND ELECTROLYTE
OUT OF REACH OF CHILDREN.
• Avoid bodily contact with electrolyte as it can cause severe burns or permanent eye
injury.
FIRST AID IN CASE OF BODILY CONTACT:
EXTERNAL
• Skin — Wash with water.
• Eyes — Flush with water for 15 minutes and get immediate medical attention.
INTERNAL
• Drink large quantities of water or milk fol-
lowed with milk of magnesia, beaten egg
or vegetable oil. Get immediate medical at-
tention.
ECA
NOTICE
• This is a VRLA (Valve Regulated Lead Ac-id) battery. Never remove the sealing caps
because the balance between cells will not
be maintained and battery performance
will deteriorate.
• Charging time, charging amperage and charging voltage for a VRLA (Valve Regu-
lated Lead Acid) battery are different from
those of conventional batteries. The VRLA
(Valve Regulated Lead Acid) battery
should be charged according to the appro-
priate charging method. If the battery is
overcharged, the electrolyte level will drop
considerably. Therefore, take special care
when charging the battery.
TIP
Since VRLA (Valve Regulated Lead Acid) bat-
teries are sealed, it is not possible to check the
charge state of the battery by measuring the
specific gravity of the electrolyte. Therefore, the
charge of the battery has to be checked by
measuring the voltage at the battery terminals.
1. Remove:• Side cover (left/right)
• SeatRefer to “GENERAL CHASSIS” on page 5-
1.
2. Disconnect: • Battery leads
(from the battery terminals)
ECA
NOTICE
First, disconnect the negative battery lead
“1”, and then positive battery lead “2”.
3. Remove:• Battery
4. Check: • Battery charge
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a. Connect a pocket tester to the battery termi- nals.
TIP
• The charge state of a VRLA (Valve Regulated Lead Acid) battery can be checked by mea-
suring its open-circuit voltage (i.e., the voltage
when the positive battery terminal is discon-
nected).
• No charging is necessary when the open-cir-
cuit voltage equals or exceeds 12.8 V.
b. Check the charge of the battery, as shown in the charts and the following example.
• Positive tester probe
positive battery terminal
• Negative tester probe
negative battery terminal
1
2
Page 400 of 426
ELECTRICAL COMPONENTS
9-70
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5. Charge:• Battery
(refer to the appropriate charging method)
EWA
WARNING
Do not quick charge a battery.
ECA
NOTICE
• Do not use a high-rate battery charger since it forces a high-amperage current
into the battery quickly and can cause bat-
tery overheating and battery plate dam-
age.
• If it is impossible to regulate the charging current on the battery charger, be careful
not to overcharge the battery. • When charging a battery, be sure to re-
move it from the vehicle. (If charging has
to be done with the battery mounted on the
vehicle, disconnect the negative battery
lead from the battery terminal.)
• To reduce the chance of sparks, do not
plug in the battery charger until the battery
charger leads are connected to the bat-
tery.
• Before removing the battery charger lead clips from the battery terminals, be sure to
turn off the battery charger.
• Make sure the battery charger lead clips are in full contact with the battery terminal
and that they are not shorted. A corroded
battery charger lead clip may generate
heat in the contact area and a weak clip
spring may cause sparks.
• If the battery becomes hot to the touch at
any time during the charging process, dis-
connect the battery charger and let the
battery cool before reconnecting it. Hot
batteries can explode!
• As shown in the following illustration, the open-circuit voltage of a VRLA (Valve Reg-
ulated Lead Acid) battery stabilizes about
30 minutes after charging has been com-
pleted. Therefore, wait 30 minutes after
charging is completed before measuring
the open-circuit voltage.
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Charging method using a variable-cur-
rent (voltage) charger
a. Measure the open-circuit voltage prior to charging.
TIP
Voltage should be measur ed 30 minutes after
the engine is stopped.
Example
Open-circuit voltage = 12.0 V
Charging time = 6.5 hours
Charge of the battery = 20–30%
A. Open-circuit voltage (V)
B. Charging time (hours)
C. Relationship between the open-circuit voltage
and the charging time at 20°C (68°F)
D. These values vary wit h the temperature, the
condition of the battery plates, and the electro-
lyte level.
A. Open-circuit voltage (V)
B. Charging condition of the battery (%)
C. Ambient temperature 20°C (68°F)
A. Open-circuit voltage (V)
B. Time (minutes)
C. Charging
D. Ambient temperature 20°C (68°F)
E. Check the open-circuit voltage.
Page 405 of 426
ELECTRICAL COMPONENTS
9-75
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a. Connect the pocket tester ( 100) to the
crankshaft position sensor coupler.
b. Measure the crankshaft position sensor re- sistance.
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EAS2GC1393CHECKING THE LEAN ANGLE SENSOR
1. Remove:• Lean angle sensor
(from the bracket)
2. Check: • Lean angle sensor output voltage
Out of specification Replace.
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a. Connect the lean angle sensor coupler to
the wire harness.
b. Connect the pocket tester (DC 20 V) to the
lean angle sensor coupler as shown. c. Incline the lean angle sensor.
d. Measure the lean angle sensor output volt-
age.
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EAS2GC1394CHECKING THE STARTER MOTOR OPERA-
TION
1. Check:• Starter motor operation
Does not operate Perform the electric
starting system troubleshooting, starting
with step 4.
Refer to “ELECTRIC STARTING SYSTEM”
on page 9-6.
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a. Connect the positive battery terminal “1” and starter motor lead “2” with a jumper lead “3”.
EWA
WARNING
• A wire that is used as a jumper lead must
have at least the same capacity of the bat-
tery lead, otherwise the jumper lead may
burn.
• This check is likely to produce sparks, therefore, make sure no flammable gas or
fluid is in the vicinity.
Crankshaft position sensor resis-
tance
228–342
Pocket tester 90890-03112
Analog pocket tester YU-03112-C
• Positive tester probe
Gray “1”
• Negative tester probe
Black “2”
Lean angle sensor output voltageOperating angle45 °
Output voltage up to operating
angle 3.7–4.4 V
Output voltage over operating an-
gle 0.4–1.4 V
12
Gy B
Pocket tester90890-03112
Analog pocket tester YU-03112-C
Test harness– lean angle sensor
(6P) 90890-03209
Test harness– lean angle sensor
(6P) YU-03209
• Positive tester probe Yellow/Green “1”
• Negative tester probe
Black/Blue “2”
2
1
à 45
Ã
45
Page 408 of 426
ELECTRICAL COMPONENTS
9-78
b. Measure the resistance of the resister.
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EAS2GC1399CHECKING THE RADIATOR FAN MOTOR
1. Check:• Radiator fan motor
Faulty/rough movement Replace.
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a. Disconnect the radiator fan motor coupler
from the wire harness.
b. Connect the battery (DC 12 V) as shown.
c. Measure the radiator fan motor movement.
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EAS2GC1400CHECKING THE COOLANT TEMPERATURE
SENSOR
1. Remove: • Coolant temperature sensor
EWA
WARNING
• Handle the coolant temperature sensor with special care.
• Never subject the coolant temperature sensor to strong shocks. If the coolant
temperature sensor is dropped, replace it. 2. Check:
• Coolant temperature sensor resistanceOut of specification Replace.
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a. Connect the pocket tester ( 1k/100) to
the coolant temperature sensor.
b. Immerse the coolant temperature sensor in a container filled with coolant.
TIP
Make sure the coolant temperature sensor ter-
minals do not get wet.
c. Place a thermometer in the coolant.
d. Slowly heat the coolant, and then let it cool to the specified temperature indicated in the
table.
e. Check the coolant temperature sensor for continuity at the temperatures indicated in
the table.
• Positive tester probe
Black “1”
• Negative tester probe
Black “2”
• Positive battery terminal
Blue “1”
• Negative battery terminal
Black “2”
1
2
12
12V
LB
Coolant temperature sensor re-
sistance 2512–2777 at 20 °C (2512–
2777 at 68 °F)
210–220 at 100 °C (210–220
at 212 °F)
Pocket tester 90890-03112
Analog pocket tester YU-03112-C
• Positive tester probe Green/White “1”
• Negative tester probe
Black/Blue “2”
12
G/W B/L
B/LG/W
Page 409 of 426
ELECTRICAL COMPONENTS
9-79
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EAS2GC1401CHECKING THE THROTTLE POSITION
SENSOR
1. Remove:• Throttle position sensor(from the throttle body)
EWA
WARNING
• Handle the throttle position sensor with special care.
• Never subject the throttle position sensor to strong shocks. If the throttle position
sensor is dropped, replace it.
2. Check: • Throttle position sensor maximum resis-
tance
Out of specification Replace.
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a. Connect the pocket tester ( 1k) to the
throttle position sensor. b. Check the throttle position sensor maximum
resistance.
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3. Install:
• Throttle position sensor
TIP
When mounting the throttle position sensor, ad-
just its angle properly. Refer to “ADJUSTING
THE THROTTLE POSITION SENSOR” on
page 8-11.
EAS2GC1402CHECKING THE THROTTLE POSITION
SENSOR INPUT VOLTAGE
1. Check:• Throttle position sensor input voltageOut of specification Replace the ECU.
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a. Connect the test harness S-pressure sensor
(3P) to the throttle position sensor coupler
and the wire harness.
b. Connect the pocket tester (20 VDC) to the
test harness S-pressure sensor (3P).
Resistance
6.30 k
Pocket tester 90890-03112
Analog pocket tester YU-03112-C
• Positive tester probe Blue “1”
• Negative tester probe
Black/Blue “2”
Throttle position sensor input
voltage4–6 V
Pocket tester 90890-03112
Analog pocket tester YU-03112-C
Test harness S– pressure sensor
(3P) 90890-03207
Test harness S– pressure sensor
(3P) YU-03207
21
Page 410 of 426
ELECTRICAL COMPONENTS
9-80
c. Start the engine.
d. Measure the throttle position sensor input voltage.
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EAS2GC1403CHECKING THE INTAKE AIR PRESSURE
SENSOR
1. Check:
• Intake air pressure sensor output voltageOut of specification Replace.
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a. Connect the pocket tester (20 VDC) to the
intake air pressure sensor coupler (wire har-
ness side). b. Start the engine.
c. Measure the intake air pressure sensor out-
put voltage.
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EAS2GC1404CHECKING THE INTAKE AIR TEMPERA-
TURE SENSOR
1. Remove:• Intake air temperature sensor(from the air filter case)
EWA
WARNING
• Handle the intake air temperature sensor with special care.
• Never subject the intake air temperature sensor to strong shocks. If the intake air
temperature sensor is dropped, replace it.
2. Check: • Intake air temperature sensor resistanceOut of specification Replace.
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a. Connect the pocket tester ( 1k/100) to
the intake air temperature sensor terminal.
• Positive tester probe
Blue “1”
• Negative tester probe
Black/Blue “2”
Intake air pressure sensor output
voltage3.61–3.67 V at 101.3 kPa (3.61–
3.67 V at 1.01kgf/cm
2, 3.61–3.67
V at 14.7 psi)
Pocket tester 90890-03112
Analog pocket tester YU-03112-C
• Positive tester probe
Pink “1”
• Negative tester probe
Black/Blue “2”
21
Intake air temperature sensor re-
sistance 290–390 at 80 °C (290–390
at 176 °F)
Pocket tester 90890-03112
Analog pocket tester YU-03112-C
• Positive tester probe Brown/White “1”
• Negative tester probe
Black/Blue “2”
12