ELECTRICAL COMPONENTS
8-89
c. Set the main switch to “ON”.
d. 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)
WARNING
EWA14110
• 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.
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a. Connect the pocket tester (Ω × 1k) to the in-
take air temperature sensor terminal as
shown.
b. Immerse the intake air temperature sensor
“1” in a container filled with water “2”.
IP
Make sure that the intake air temperature sensor
terminals do not get wet.
c. Place a thermometer “3” in the water.
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
WARNING
EWA37P1017
• 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.
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a. Connect the pocket tester (Ω × 1k) to the air
temperature sensor terminal as shown.
Test harness
90890-03204
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe →
pink/white “1”
• Negative tester probe →
gray/black “2”
Intake air temperature sensor re-
sistance
2.21–2.69 kΩ at 20 °C (68 °F)
Gy/R
P/W
Gy/B
12
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
Air temperature sensor resis-
tance
4.19–4.63 kΩ at 50 °C (122 °F)
3
1
2