Checking And Adjusting The Throttle Position Sensor - Yamaha YXR70FX Service Manual

L Y B/L
1 2
THROTTLE BODY
EAS00916
CHECKING AND ADJUSTING THE
THROTTLE POSITION SENSOR
1. Check:
• throttle position sensor
M MMM M MMM M M MMM M
a. Disconnect the throttle position sensor cou-
pler from the throttle position sensor.
b. Remove the throttle position sensor from
the throttle body.
c. Connect the pocket tester (Ω × 1k) to the
terminals of the throttle position sensor.
Positive tester probe → blue 1
Negative tester probe → black/blue 2
d. Measure the maximum throttle position sen-
sor resistance.
Out of specification → Replace the throttle
position sensor.
Maximum throttle position sensor
resistance
3.08 ~ 5.72 kΩ
(blue-black/blue)
L LLL L LLL L L LLL L
2. Adjust:
• throttle position sensor angle
M MMM M MMM M M MMM M
a. Connect the throttle position sensor coupler
to the throttle position sensor.
b. Connect the digital circuit tester to the throt-
tle position sensor coupler.
Positive digital circuit tester probe →
Negative digital circuit tester probe →
Digital circuit tester
90890-03174
Model 88 Multimeter with tachom-
eter
YU-A1927
6 - 44
FI
M MMM M M MMM M M MMM M MMM
L LLL L L LLL L L LLL L LLL
M MMM M M MMM M M MMM M MMM
yellow 1
black/blue 2