Checking The Eps Motor (For Yfm5Fgp/Yfm7Fgp); Checking The Eps Torque Sensor (For Yfm5Fgp/Yfm7Fgp) - Yamaha Grizzly550 User Manual

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a. Connect the pocket tester (Ω × 100) to the in-
take air temperature sensor terminal as
shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
3
1
b. Immerse the intake air temperature sensor
"1" in a container filled with water "2".
TIP
Make sure that the air temperature sensor termi-
nals 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 intake air temperature sensor
resistance.
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EAS30300
CHECKING THE EPS MOTOR (for
YFM5FGP/YFM7FGP)
1. Remove:
• EPS unit
2. Check:
• EPS motor
Out of specification → Replace the EPS unit.
TIP
The pocket tester and the analog pocket tester
readings are shown in the following table.
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2
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ELECTRICAL COMPONENTS
Continuity
Positive tester probe → red "1"
Negative tester probe → black
"2"
No continuity
Positive tester probe → red "1"
Negative tester probe → EPS
motor body "3"
No continuity
Positive tester probe → black
"2"
Negative tester probe → EPS
motor body "3"
2
1
B R
3
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a. Connect the pocket tester (Ω × 1) to the EPS
motor coupler terminal and EPS motor body.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
b. Check the EPS motor for continuity.
c. Check the EPS motor for no continuity.
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EAS30310
CHECKING THE EPS TORQUE SENSOR (for
YFM5FGP/YFM7FGP)
1. Remove:
• EPS unit
2. Check:
• EPS torque sensor resistance
Out of specification → Replace the EPS unit.
EPS torque sensor resistance
1.00–1.50 kΩ
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a. Connect the pocket tester (Ω × 1k) to the EPS
torque sensor coupler terminal as shown.
9-97
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