Sensor Operation Table - Yamaha YZ450FX 2019 Owner's Service Manual

LIST OF SELF-DIAGNOSTIC AND FAIL-SAFE ACTIONS
EAM30367

SENSOR OPERATION TABLE

Diag-
nostic
Item
code
No.
01 Throttle angle
• Fully closed position
• Fully opened position
03 Pressure of suction pipe
05 Intake air temperature
06 Coolant temperature
08 Lean angle sensor
• Upright
• Overturn
09 Monitor voltage
21 Neutral switch
• Gear in neutral
• Gear not in neutral
25 Gear position switch
• Gear in 1st or 2nd
• Gear in other than 1st or 2nd
60 EEPROM fault code display
• No fault
• CO adjustment valve
• Power Tuner injection cor-
rection setting 0–8, or Power
Tuner ignition timing correc-
tion setting 0–8
61 Malfunction history () code
display *1
• There is no history.
• There is some history.
Display
Displays the throttle angle.
• 11–14
• 86–92
Displays the intake air pressure.
• Check the change of the
intake pressure valve when
the starter switch is pushed.
Displays the intake air tempera-
ture.
Displays the coolant tempera-
ture.
Displays the output voltage.
• 0.4–1.4 (V)
• 3.7–4.4 (V)
Displays the voltage of the
external battery connected to
the Yamaha diagnostic tool.
• Approximately 12.0 (V)
• ON
• OFF
• ON
• OFF
• 00
• 01
• 07
• 00
• Other: Displays the fault code
of ().
9-5
Procedure
• Check with throttle fully
closed.
• Check with throttle fully
opened.
The atmospheric pressure is
displayed on the Yamaha
diagnostic tool.
Compare the actually mea-
sured intake air temperature
with the Yamaha diagnostic
tool display value.
Compare the actually mea-
sured coolant temperature
with the Yamaha diagnostic
tool display value.
Remove the ECU, and incline
it 45 or more.
—
Operate the shift pedal.
Operate the shift pedal.
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