Checking The Speed Sensor; Checking The Radiator Fan Motor; Checking The Coolant Temperature Sensor - Yamaha 2009 Diversion XJ6S Service Manual

EAS28240

CHECKING THE SPEED SENSOR

1. Check:
Speed sensor output voltage
G
Out of specification → Replace.
Output voltage reading cycle
0 V to 5.0 V to 0 V to 5.0 V
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a. Connect the pocket tester (DC 20 V) to the
speed sensor coupler (wire harness side) as
shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
Positive tester probe →
G
White/Yellow "1"
Negative tester probe →
G
Black/Blue "2"
1
2
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. Each with full rotation of the front
wheel, the voltage reading should cycle from
0 V to 5.0 V to 0 V to 5.0 V.
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EAS28250

CHECKING THE RADIATOR FAN MOTOR

1. Check:
Radiator fan motor
G
Faulty/rough movement → Replace.
MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
a. Disconnect the radiator fan motor coupler
from the wire harness.
b. Connect the battery (DC 12 V) as shown.
ELECTRICAL COMPONENTS
Positive battery terminal →
G
Blue "1"
Negative battery terminal →
G
Black "2"
1
c. Measure the radiator fan motor movement.
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EAS28260
CHECKING THE COOLANT TEMPERATURE
SENSOR
1. Remove:
Coolant temperature sensor
G
Refer to "CYLINDER HEAD" on page 5-16.
EWA14130
WARNING
Handle the coolant temperature sensor
G
with special care.
Never subject the coolant temperature sen-
G
sor to strong shocks. If the coolant temper-
ature sensor is dropped, replace it.
2. Check:
Coolant temperature sensor resistance
G
Out of specification → Replace.
Coolant temperature sensor re-
sistance
5.21–6.37 kΩ Ω Ω Ω at 0° ° ° ° C (32° ° ° ° F)
290–354 Ω Ω Ω Ω at 80° ° ° ° C (176° ° ° ° F)
MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
a. Connect the digital circuit tester (Ω × 100) to
the coolant temperature sensor terminals as
shown.
Digital circuit tester
90890-03174
Model 88 Multimeter with tachom-
eter
YU-A1927
b. Immerse the coolant temperature sensor "1"
in a container filled with coolant "2".
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