Yamaha Grizzly550 User Manual page 399

8. Check the differential motor.
Refer to "CHECKING THE DIF-
FERENTIAL MOTOR" on page
8-11.
OK ↓
9. Check the entire 2WD/4WD select-
ing system wiring.
Refer to "CIRCUIT DIAGRAM" on
page 9-59.
OK ↓
Replace the ECU.
2WD/4WD SELECTING SYSTEM
NG →
Replace the differential motor.
NG →
Properly connect or repair the 2WD/4WD
selecting system wiring.
9-62
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