Yamaha FJR13AY 2009 Service Manual page 725

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a. Connect the pocket tester (DC 20 V) to the
cylinder identification sensor coupler (wire
harness side) as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe →
white/black "1"
• Negative tester probe →
black/blue "2"
W L/Y
B/L
b. Turn the main switch to "ON".
c. Rotate the crankshaft.
d. Measure the voltage of white/black and
black/blue. Turn the crankshaft twice and
check that the output voltage rises to approx-
imately 4.8 V once.
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EAS28410
CHECKING THE INTAKE AIR PRESSURE
SENSOR
1. Check:
• Intake air pressure sensor output voltage
Out of specification → Replace.
Intake air pressure sensor output
voltage
3.75–4.25 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
M MMM M M MMM M MMM
1
L W/B
B/L
2
L LLL L L LLL L LLL
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8-242
ELECTRICAL COMPONENTS
• Positive tester probe →
pink/white "1"
• Negative tester probe →
black/blue "2"
P/W
1
b. Turn the main switch to "ON".
c. Measure the intake air pressure sensor out-
put voltage.
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EAS28420
CHECKING THE INTAKE AIR
TEMPERATURE SENSOR
1. Remove:
• Intake air temperature sensor
(from the air filter case)
EWA14110
WARNING
• Handle the intake air temperature sensor
with special care.
• Never subject the intake air temperature
sensor to strong shocks. If the intake air
temperature sensor is dropped, replace it.
2. Check:
• Intake air temperature sensor resistance
Out of specification → Replace.
Intake air temperature sensor re-
sistance
290–390 Ω at 80 °C (176 °F)
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a. Connect the pocket tester (Ω × 100) to the in-
take air temperature sensor terminals as
shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
B/L L
2
L LLL L L LLL L LLL
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