Yamaha Motor Co., Ltd. YFM7FGPW — EPS (ELECTRIC POWER STEERING) SYSTEM

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 2 1 B R 3 MMM M M MMM M M MMM M M MMM M M MMM M M MMM M MMM a. Connect the pocket tester ( Ω Ч 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. LLL L L LLL L L LLL L L LLL L L LLL L L LLL L LLL 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 k Ω 9 - 70 EPS (ELECTRIC POWER STEERING) SYSTEM ELEC – + ELEC – +