ELECTRICAL COMPONENTS
8-139
• Never subject the atmospheric pressure
sensor to strong shocks. If the atmospheric
pressure sensor is dropped, replace it.
1. Check:
• Atmospheric pressure sensor output voltage
Out of specification → Replace.
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a. Connect the pocket tester (DC 20 V) to the at-
mospheric pressure sensor coupler as
shown.
b. Turn the main switch to “ON”.
c. Measure the atmospheric pressure sensor
output voltage.
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EAS28390
CHECKING THE CYLINDER
IDENTIFICATION SENSOR
1. Remove:
• Timing plate cover
2. Check:
• Cylinder identification sensor output voltage
Out of specification → Replace.
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a. Connect the pocket tester (DC 20 V) to the
cylinder identification sensor coupler as
shown.
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
WARNING
EWA2S31019
• Handle the intake air pressure sensor with
special care.
• Never subject the intake air pressure sen-
sor to strong shocks. If the intake air pres-
sure sensor is dropped, replace it.
Atmospheric pressure sensor
output voltage
3.57–3.71 V
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe →
pink “1”
• Negative tester probe →
black/blue “2”
L
B/L
P
1
2
Cylinder identification sensor
output voltage (ON)
4.8 V
Cylinder identification sensor
output voltage (OFF)
0.8 V
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
Test harness-speed sensor (3P)
90890-03208
YU-03208
• Positive tester probe →
white/black “1”
• Negative tester probe →
black/blue “2”
WL/Y
B/L
L
W/B
B/L
1
2
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