Yamaha MX775 - CHECKING THE CRANKSHAFT POSITION SENSOR

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ELECTRICAL
ELECTRICAL COMPONENTS
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a. Connect the digital circuit tester () to the throttle
position sensor terminals as shown.
b. Measure the throttle position sensor maximum
resistance.
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3. Install:
• Throttle body assembly
CHECKING THE CRANKSHAFT POSITION
SENSOR
1. Remove:
• Fan case cover
• Grass screen
• Fan case
(Refer to “CASE AND FAN” on page 3-11)
2. Check:
• Crankshaft position sensor resistance
Out of specification  Replace the crankshaft posi-
tion sensor.
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a. Connect the digital circuit tester () to the crank-
shaft position sensor coupler as shown.
Resistance:
3.0–7.0 k
Model 88 Multimeter with tachometer:
YU-A1927
ab
• Positive tester probe 
Terminal “a”
• Negative tester probe 
Terminal “b”
Crankshaft position sensor resistance:
3.0–7.0 k
Model 88 Multimeter with tachometer:
YU-A1927