Checking The Eps Motor; Checking The Eps Torque Sensor - Yamaha YFM7FGPW Service Manual

EPS (ELECTRIC POWER STEERING) SYSTEM
2
1
B R
3

CHECKING THE EPS MOTOR

1. Remove:
• EPS unit
2. Check:
• EPS motor
Out of specification → Replace.
NOTE:
The pocket tester and the analog pocket tester
readings are shown in the following table.
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
M MMM M MMM M M MMM M
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.
L LLL L LLL L L LLL L

CHECKING THE EPS TORQUE SENSOR

1. Remove:
• EPS unit
2. Check:
• EPS torque sensor resistance
Out of specification → Replace.
EPS torque sensor resistance
1.00 ~ 1.50 kΩ
9 - 69
–
ELEC
M MMM M M MMM M M MMM M MMM
L LLL L L LLL L L LLL L LLL
+