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Yamaha YZ250F User Manual

Yamaha YZ250F
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LIST OF SELF-DIAGNOSTIC AND FAIL-SAFE ACTIONS
9-5
SENSOR OPERATION TABLE
Diag-
nostic
code
No.
ITEM Display Procedure
01 Throttle angle
Fully closed position
Fully opened position
Displays the throttle angle.
11–14
109–116
Check with throttle fully
closed.
Check with throttle fully
opened.
03 Pressure of suction pipe Displays the intake air pres-
sure.
The atmospheric pressure
is displayed on the Yamaha
diagnostic tool.
05 Intake air temperature Displays the intake air tem-
perature.
Compare the actually mea-
sured intake air tempera-
ture with the Yamaha
diagnostic tool display val-
ue.
06 Coolant temperature Displays the coolant temper-
ature.
Compare the actually mea-
sured coolant temperature
with the Yamaha diagnostic
tool display value.
08 Lean angle sensor
Upright
•Overturn
Displays the output voltage.
1.0 (V)
4.0 (V)
Remove the ECU, and in-
cline it 45 ° or more.
09 Monitor voltage Displays the voltage of the
external battery connected to
the Yamaha diagnostic tool.
Approximately 12.0 (V)
21 Neutral switch
Gear in neutral
Gear not in neutral
•ON
•OFF
Operate the shift pedal.
25 Gear position switch
Gear in 1st or 2nd
Gear not in 1st or 2nd
•ON
•OFF
Operate the shift pedal.
60 EEPROM fault code No.
display
No fault
CO adjustment valve
Power Tuner injection cor-
rection setting 0–8, or
Power Tuner ignition tim-
ing correction setting 0–8
•00
•01
•07
61 Malfunction history ( )
code No. display *1
There is no history.
There is some history.
•00
Other: Displays the fault
code of ( ).

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Yamaha YZ250F Specifications

General IconGeneral
Displacement250cc
Bore x Stroke77.0 mm x 53.6 mm
Final DriveChain
Suspension / RearKYB® single shock; fully adjustable, 12.5-in travel
Brakes / FrontHydraulic single disc brake, 270mm
Brakes / RearHydraulic single disc brake, 240mm
Fuel Capacity1.6 gal
Engine TypeLiquid-cooled, DOHC, 4-stroke
Fuel DeliveryFuel injection
IgnitionTCI
Transmission5-speed; multiplate wet clutch
Suspension / FrontKYB® Speed-Sensitive System inverted fork; fully adjustable, 12.2-in travel
Tires / Front80/100-21

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