Adjusting The Throttle Position Sensor - Yamaha YZ450FX 2019 Owner's Service Manual

EAM30273
ADJUSTING THE THROTTLE POSITION
SENSOR
EWA15950
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.
1. Check:
• Throttle position sensor
Refer to "CHECKING THE THROTTLE PO-
SITION SENSOR INPUT VOLTAGE" on
page 8-67.
2. Adjust:
• Throttle position sensor angle
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a. Connect the Yamaha diagnostic tool.
Refer to "YAMAHA DIAGNOSTIC TOOL" on
page 8-25.
Yamaha diagnostic tool USB (US)
90890-03257
Yamaha diagnostic tool (A/I)
90890-03262
FI diagnostic tool sub–lead
90890-03212
FI diagnostic tool sub–lead
YU-03212
OBD/ GST Leadwire kit
90890-03249
b. Temporary tighten the throttle position sen-
sor.
c. Check that the throttle grip is fully closed.
d. Connect the throttle position sensor to the
wire harness.
e. Set the Yamaha diagnostic tool to "diagnostic
mode".
f. Choose the diagnostic code No. "01".
g. Adjust the throttle position sensor mounted
angle until "11"–"14" appears on the Yamaha
diagnostic tool.
h. After adjusting the throttle position sensor
mounted angle, tighten the throttle position
sensor screws "1".
1
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7-9
THROTTLE BODY
Throttle position sensor screw
3.5 N·m (0.35 kgf·m, 2.6 lb·ft)
1