ELECTRICAL COMPONENTS
8-167
EAS28260
CHECKING THE COOLANT TEMPERATURE
SENSOR
1. Remove:
• Coolant temperature sensor
WARNING
EWA14130
• Handle the coolant temperature sensor
with special care.
• Never subject the coolant temperature sen-
sor to strong shocks. If the coolant temper-
ature sensor is dropped, replace it.
2. Check:
• Coolant temperature sensor resistance
Out of specification → Replace.
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a. Connect the pocket tester (Ω × 100) to the
coolant temperature sensor terminals as
shown.
b. Immerse the coolant temperature sensor “1”
in a container filled with coolant “2”.
NOTE:
Make sure that the coolant temperature sensor
terminals do not get wet.
c. Place a thermometer “3” in the coolant.
d. Slowly heat the coolant, and then let it cool
down to the specified temperature.
e. Measure the coolant temperature sensor re-
sistance.
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3. Install:
• Coolant temperature sensor
EAS28300
CHECKING THE THROTTLE POSITION
SENSOR
1. Remove:
• Throttle position sensor
(from the throttle body)
2. Check:
• Throttle position sensor maximum resistance
Out of specification → Replace the throttle
position sensor.
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a. Connect the pocket tester (Ω × 1k) to the
throttle position sensor terminals as shown.
b. Measure the throttle position sensor maxi-
mum resistance.
▲▲▲▲▲▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲ ▲▲▲▲ ▲▲▲
3. Install:
• Throttle position sensor
NOTE:
When installing the throttle position sensor, ad-
just its angle properly. Refer to “ADJUSTING
THE THROTTLE POSITION SENSOR” on page
7-7.
Coolant temperature sensor re-
sistance
290–354 Ω at 80 °C (176 °F)
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
3
1
2
T
R
.
.
Coolant temperature sensor
18 Nm (1.8 m·kg, 13 ft·lb)
Resistance
4.0–6.0 kΩ
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Tester positive lead →
blue “1”
• Tester negative lead →
black/blue “2”
B/L
Y
L
2
1
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