Yamaha XV19SX(C) Service Manual page 479

3
1
b. Immerse the engine temperature sensor "1"
in a container filled with water "2".
NOTE:
Make sure that the engine temperature sensor
terminals do not get wet.
c. Place a thermometer "3" in the water.
d. Slowly heat the water, then let it cool down to
the specified temperature.
e. Measure the engine temperature sensor re-
sistance.
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3. Install:
• Engine temperature sensor
Engine temperature sensor
20 Nm (2.0 m·kg, 14 ft·lb)
ET1D71014
CHECKING THE FUEL SENDER (FUEL
TANK)
1. Remove:
• Fuel sender
(from the fuel tank)
2. Check:
• Fuel sender resistance
Out of specification → Replace.
Fuel sender (fuel tank)
Sender unit resistance (full)
9–11 Ω
Sender unit resistance (empty)
213–219 Ω
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a. Connect the pocket tester (Ω × 100) to the
fuel sender coupler as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
2
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ELECTRICAL COMPONENTS
• Positive tester probe →
green "1"
• Negative tester probe →
black "2"
b. Move the fuel sender float to maximum
"3"/minimum "4" level position.
1
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c. Measure the fuel sender resistance.
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ET1D71015
CHECKING THE FUEL SENDER (FUEL
PUMP)
1. Drain the fuel.
2. Disconnect:
• Fuel pump coupler
(from the fuel pump)
3. Remove:
• Fuel pump
(from the sub-fuel tank)
4. Check:
• Fuel sender resistance
Out of specification → Replace the fuel pump
assembly.
Fuel sender resistance
0.90–2.05 kΩ
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a. Connect the pocket tester (Ω × 1) to the fuel
sender terminals as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe →
green/white "1"
• Negative tester probe →
black "2"
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