Checking The Air Temperature Sensor; Checking The Fuel Injector - Yamaha MBK XMAX 2014 Service Manual

3
1
d. Heat the water or let it cool down to the spec-
ified temperature.
e. Measure the intake air temperature sensor
resistance.
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EAS37P1083
CHECKING THE AIR TEMPERATURE
SENSOR
1. Remove:
• Air temperature sensor
EWA37P1017
WARNING
• Handle the air temperature sensor with
special care.
• Never subject the air temperature sensor to
strong shocks. If the air temperature sen-
sor is dropped, replace it.
2. Check:
• Air temperature sensor resistance
Out of specification → Replace.
Air temperature sensor resis-
tance
12.09 kΩ at 20 °C (68 °F)
4.16 kΩ at 50 °C (122 °F)
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a. Connect the pocket tester (Ω × 1k) to the air
temperature sensor terminal as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
b. Immerse the air temperature sensor "1" in a
container filled with water "2".
TIP
Make sure that the air temperature sensor termi-
nals do not get wet.
c. Place a thermometer "3" in the water.
2
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ELECTRICAL COMPONENTS
3
d. Heat the water or let it cool down to the spec-
ified temperatures.
e. Measure the air temperature sensor resis-
tance.
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EAS1SD1038

CHECKING THE FUEL INJECTOR

1. Check:
• Fuel injector resistance
Out of specification → Replace the fuel injec-
tor.
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a. Disconnect the fuel injector coupler from wire
harness.
b. Connect the pocket tester (Ω × 1) to the fuel
injector coupler as shown.
• Positive tester probe
▼▼▼
red/blue "1"
• Negative tester probe
orange/black "2"
c. Measure the fuel injector resistance.
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8-149
B
B
1
2
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Resistance
12.0 Ω
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Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
1 2
R/L O/B
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