Yamaha Star XVS13AA(C) 2011 Service Manual page 521

EAS28300
CHECKING THE THROTTLE POSITION
SENSOR
1. Remove:
• Throttle position sensor
(from the throttle body)
2. Check:
• Throttle position sensor maximum resistance
Out of specification → Replace the throttle
position sensor.
Resistance
3.10–5.70 kΩ
M MMM M MMM M M MMM M M MMM M
a. Connect the pocket tester (Ω × 1k) to the
throttle position sensor terminals as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe →
blue "1"
• Negative tester probe →
black/blue "2"
2
B/L Y
b. Measure the throttle position sensor maxi-
mum resistance.
L LLL L LLL L L LLL L L LLL L
3. Install:
• Throttle position sensor
TIP
When installing the throttle position sensor, ad-
just its angle properly. Refer to "ADJUSTING
THE THROTTLE POSITION SENSOR" on page
7-14.
EAS28410
CHECKING THE INTAKE AIR PRESSURE
SENSOR
1. Check:
• Intake air pressure sensor output voltage
Out of specification → Replace.
M MMM M M MMM M MMM
1
L
L LLL L L LLL L LLL
8-114
ELECTRICAL COMPONENTS
Intake air pressure sensor output
voltage
3.57–3.71 V
M MMM M MMM M M MMM M M MMM M
a. Connect the pocket tester (DC 20 V) to the in-
take air pressure sensor coupler as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe →
pink/white "1" or pink "1"
• Negative tester probe →
black/blue "2"
A
B
A. For XVS13AA(C)/XVS13CTA(C)
B. For XVS13CA(C)
b. Set the main switch to "ON".
c. Measure the intake air pressure sensor out-
put voltage.
L LLL L LLL L L LLL L L LLL L
EAS28420
CHECKING THE AIR TEMPERATURE
SENSOR
1. Remove:
• Air temperature sensor
EWA3D81003
WARNING
• Handle the air temperature sensor with
special care.
M MMM M M MMM M MMM
2
1
B/L P/W L
2
1
B/L P L
L LLL L L LLL L LLL