Yamaha XV16AL Service Manual page 364

CARBURETOR
d. Connect the pocket tester (Ω × 1k) to the
throttle position sensor.
Positive tester probe → yellow terminal 3
Negative tester probe → black terminal 2
e. While slowly opening the throttle, check
that the throttle position sensor resis-
tance is within the specified range.
NOTE:
Check mainly that the resistance changes
gradually when turning the throttle, since
the readings (from closed to wide-open
throttle) may differ slightly from those spec-
ified.
Out of specification or the resistance
changes abruptly → Go to step 2 below.
Throttle position sensor resis-
tance
(520 ~ 900 Ω) ~ (4.0 ~ 6.0 kΩ) at
20 ˚C (68 ˚F)
(yellow — black/blue)
▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲
2. Check:
• throttle position sensor
(removed from the carburetor)
▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼
a. Disconnect the throttle position sensor
coupler from the wire harness.
b. Remove the throttle position sensor from
the carburetor.
c. Connect the pocket tester (Ω × 1k) to the
throttle position sensor.
Positive tester probe → blue terminal 1
Negative tester probe → black terminal 2
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CARB
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