Yamaha Grizzly550 User Manual page 336

EPS (ELECTRIC POWER STEERING) SYSTEM
(for YFM5FGP/YFM7FGP) ...........................................................................9-63
CIRCUIT DIAGRAM ................................................................................ 9-63
EPS CONTROL UNIT'S SELF-DIAGNOSTIC FUNCTION .....................9-65
EPS WARNING LIGHT DURING NORMAL OPERATION......................9-65
DIAGNOSTIC MODE .............................................................................. 9-66
SELF-DIAGNOSTIC FUNCTION TABLE (EPS SYSTEM)......................9-69
TROUBLESHOOTING DETAILS (EPS SYSTEM) ..................................9-70
ELECTRICAL COMPONENTS...................................................................... 9-75
CHECKING THE SWITCHES .................................................................9-79
CHECKING THE BULBS AND BULB SOCKETS ................................... 9-82
CHECKING THE FUSES ........................................................................9-83
CHECKING AND CHARGING THE BATTERY....................................... 9-84
CHECKING THE RELAYS ...................................................................... 9-87
CHECKING THE DIODE .........................................................................9-89
CHECKING THE SPARK PLUG CAP .....................................................9-90
CHECKING THE IGNITION COIL ........................................................... 9-90
CHECKING THE IGNITION SPARK GAP............................................... 9-91
CHECKING THE CRANKSHAFT POSITION SENSOR.......................... 9-91
CHECKING THE LEAN ANGLE SENSOR.............................................. 9-92
CHECKING THE STARTER MOTOR OPERATION ...............................9-92
CHECKING THE STATOR COIL ............................................................ 9-92
CHECKING THE RECTIFIER/REGULATOR ..........................................9-93
CHECKING THE FUEL SENDER ........................................................... 9-93
CHECKING THE SPEED SENSOR ........................................................ 9-94
CHECKING THE RADIATOR FAN MOTOR ...........................................9-94
CHECKING THE RADIATOR FAN MOTOR CIRCUIT BREAKER .........9-95
CHECKING THE COOLANT TEMPERATURE SENSOR.......................9-95
CHECKING THE THROTTLE POSITION SENSOR ...............................9-96
CHECKING THE INTAKE AIR PRESSURE SENSOR ........................... 9-96
CHECKING THE INTAKE AIR TEMPERATURE SENSOR ....................9-96
CHECKING THE EPS MOTOR (for YFM5FGP/YFM7FGP) ................... 9-97
CHECKING THE EPS TORQUE SENSOR
(for YFM5FGP/YFM7FGP) ..................................................................... 9-97