Checking The Accelerator Position Sensor; Checking The Throttle Servo Motor - Yamaha 2009 YZF-R1 (Y) Service Manual

Throttle position sensor resis-
tance
1.2–2.8 kΩ
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a. Connect the pocket tester (Ω × 1 k) to the
throttle position sensor terminal as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe
Blue "1"
• Negative tester probe
Black/Blue "2"
b. Measure the throttle position sensor maxi-
mum resistance.
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3. Install:
• Throttle position sensor
TIP
When installing the throttle position sensor,
adjust its angle properly. Refer to "ADJUST-
ING THE THROTTLE POSITION SENSOR"
on page 7-19.
EAS14B1087
CHECKING THE ACCELERATOR POSITION
SENSOR
1. Remove:
• Accelerator position sensor
(from the throttle body)
2. Check:
• Accelerator position sensor maximum
resistance
Out of specification → Replace the accel-
erator position sensor.
Accelerator
resistance
1.2–2.8 kΩ
position sensor
8-139
ELECTRICAL COMPONENTS
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a. Connect the pocket tester (Ω × 1 k) to the
accelerator position sensor terminal as
shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe
Blue "1"
• Negative tester probe
Black/Blue "2"
b. Measure the accelerator position sensor
maximum resistance.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
3. Install:
• Accelerator position sensor
TIP
When installing the accelerator position sen-
sor, adjust its angle properly. Refer to
"ADJUSTING THE ACCELERATOR POSI-
TION SENSOR" on page 7-19.
EAS14B1061
CHECKING THE THROTTLE SERVO
MOTOR
1. Remove:
• Air filter case
Refer to "AIR FILTER CASE" on page 7-
5.
2. Check:
• Throttle valve operation
Throttle valves do not fully close →
Replace the throttle bodies.
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a. Connect two C-size batteries to the throttle
servo motor terminals "1" as shown.
ECA1MC1004
Do not use a 12 V battery to operate the
throttle servo motor.