Checking The Intake Air Pressure Sensor
Fragment manuala — str. 704
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ELECTRICAL COMPONENTS
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a. Connect the pocket tester (DC 20 V) to the pink/white “1”
cylinder identification sensor coupler (wire • Negative tester probe →
harness side) as shown. black/blue “2”
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
P/W B/L L
• Positive tester probe →
white/black “1”
• Negative tester probe → 1 2
black/blue “2”
b. Turn the main switch to “ON”.
c. Measure the intake air pressure sensor out-
put voltage.
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W L/Y L W/B
EAS28420
B/L B/L CHECKING THE INTAKE AIR
TEMPERATURE SENSOR
2 1. Remove:
• Intake air temperature sensor
b. Turn the main switch to “ON”. (from the air filter case)
c. Rotate the crankshaft. EWA14110
d. Measure the voltage of white/black and WARNING
black/blue. Turn the crankshaft twice and • Handle the intake air temperature sensor
check that the output voltage rises to approx- with special care.
imately 4.8 V once. • Never subject the intake air temperature
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲ sensor to strong shocks. If the intake air
temperature sensor is dropped, replace it.
EAS28410
CHECKING THE INTAKE AIR PRESSURE 2. Check:
SENSOR • Intake air temperature sensor resistance
1. Check: Out of specification → Replace.
• Intake air pressure sensor output voltage
Out of specification → Replace. Intake air temperature sensor re-
sistance
Intake air pressure sensor output 290–390 Ω at 80 °C (176 °F)
voltage
3.75–4.25 V ▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Connect the pocket tester (Ω × 100) to the in-
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼ take air temperature sensor terminals as
a. Connect the pocket tester (DC 20 V) to the in- shown.
take air pressure sensor coupler as shown.
Pocket tester
Pocket tester 90890-03112
90890-03112 Analog pocket tester
Analog pocket tester YU-03112-C
YU-03112-C
8-233