Yamaha MX775 - CHECKING THE ENGINE TEMPERATURE SENSOR

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ELECTRICAL
ELECTRICAL COMPONENTS
b. Measure the crankshaft position sensor resistance.
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CHECKING THE ENGINE TEMPERATURE
SENSOR
1. Remove:
• Engine temperature sensor
2. Check:
• Engine temperature sensor resistance
Out of specification  Replace.
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a. Connect the digital circuit tester () to the engine
temperature sensor as shown.
b. Immerse the engine temperature sensor “1” in a
container filled with water “2”.
TIP
Make sure 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.
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• Positive tester probe 
White/Red “1” (wire harness color)
• Negative tester probe 
Black “2” (wire harness color)
• Handle the engine temperature sensor with special
care.
• Never subject the engine temperature sensor to
strong shocks. If the engine temperature sensor is
dropped, replace it.
Use inch tool “5/8” or 16 mm for engine temperature
sensor.
WARNING
NOTICE
Engine temperature sensor resistance:
9.0–11.0 k at 25 C (77 F)
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Model 88 Multimeter with tachometer:
YU-A1927