ELECTRICAL COMPONENTS
8-100
1. Check:
• Oil level warning light “1”
(Turn the main switch to “ON”.)
Warning light comes on for a few seconds,
then goes off → Warning light is OK.
Warning light does not come on → Replace
the meter assembly.
Warning light flashes ten times, then goes off
for 2.5 seconds in a repeated cycle (malfunc-
tion detected in oil level switch) → Replace
the oil level switch.
EAS28240
CHECKING THE SPEED SENSOR
1. Check:
• Speed sensor output voltage
Out of specification → Replace.
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a. Connect the pocket tester (DC 20 V) to the
speed sensor coupler (wire harness side) as
shown.
b. Set the main switch to “ON”.
c. Elevate the rear wheel and slowly rotate it.
d. Measure the voltage of white/yellow and
black/blue. With each full rotation of the rear
wheel, the voltage reading should cycle from
0.6 V to 4.8 V to 0.6 V to 4.8 V.
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EAS28250
CHECKING THE RADIATOR FAN MOTOR
1. Check:
• Radiator fan motor
Faulty/rough movement → Replace.
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a. Disconnect the radiator fan motor coupler
from the wire harness.
b. Connect a battery (DC 12 V) as shown.
c. Check the radiator fan motor movement.
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EAS28260
CHECKING THE COOLANT TEMPERATURE
SENSOR
1. Remove:
• Coolant temperature sensor
Refer to “THERMOSTAT” on page 6-4.
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.
Output voltage reading cycle
0.6 V to 4.8 V to 0.6 V to 4.8 V
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe →
white/yellow “1”
• Negative tester probe →
black/blue “2”
1
LP
B
/
W
/
Y
L
1
2
B
/
W
O
/
R
• Positive tester probe →
black/white “1”
• Negative tester probe →
black “2”
Coolant temperature sensor re-
sistance
290–354 Ω at 80 °C (176 °F)
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