Checking The Thermo Sensor; Checking The Shift Position Switch - Yamaha F30B 2018 Service Manual

Checking the thermo sensor

1. Measure:
• Thermo sensor input voltage
Out of specification  Check the wire har-
ness for continuity.
Input voltage
5 V
Black/Yellow (B/Y)–Black (B)
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a. Disconnect the thermo sensor coupler "a".
b. Turn the engine start switch to ON, and
then measure the input voltage at the ther-
mo sensor coupler.
B/Y
B
c. Turn the engine start switch to OFF.
d. Connect the thermo sensor coupler.
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2. Measure:
• Thermo sensor resistance
Out of specification  Replace.
Resistance at 20 C (68 F)
2.49 k
Resistance at 60 C (167 F)
0.589 k
Resistance at 100 C (212 F)
0.193 k
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a. Remove the thermo sensor.
b. Place the thermo sensor in a container of
water and heat the water slowly.
c. Measure the thermo sensor resistance.
a
d. Install the thermo sensor. See "Installing
the thermo sensor" (7-47).
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Checking the shift position switch

1. Measure:
• Shift position switch input voltage
Out of specification  Check the wire har-
ness for continuity.
Input voltage
12 V
Blue/Green (L/G)–Black (B)
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a. Disconnect the shift position switch cou-
pler "a".
b. Turn the engine start switch to ON, and
then measure the input voltage at the shift
position switch coupler.
B
c. Turn the engine start switch to OFF.
d. Connect the shift position switch coupler.
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5-32
Ignition unit and component
a
L/G