Yamaha XV19SX(C) Service Manual page 390

ELECTRICAL COMPONENTS...................................................................... 7-67
CHECKING THE SWITCHES .................................................................7-71
CHECKING THE BULBS AND BULB SOCKETS ................................... 7-74
CHECKING THE FUSES ........................................................................7-75
CHECKING AND CHARGING THE BATTERY....................................... 7-76
CHECKING THE RELAYS ...................................................................... 7-79
CHECKING THE TURN SIGNAL RELAY ............................................... 7-80
CHECKING THE DIODES....................................................................... 7-81
CHECKING THE IGNITION SPARK GAP............................................... 7-83
CHECKING THE SPARK PLUG CAPS...................................................7-83
CHECKING THE IGNITION COILS......................................................... 7-84
CHECKING THE CRANKSHAFT POSITION SENSOR.......................... 7-84
CHECKING THE LEAN ANGLE SENSOR.............................................. 7-85
CHECKING THE STARTER MOTOR OPERATION ...............................7-85
CHECKING THE STATOR COIL ............................................................ 7-85
CHECKING THE RECTIFIER/REGULATOR ..........................................7-86
CHECKING THE HORNS ....................................................................... 7-86
CHECKING THE ENGINE TEMPERATURE SENSOR .......................... 7-87
CHECKING THE FUEL SENDER (FUEL TANK) .................................... 7-88
CHECKING THE FUEL SENDER (FUEL PUMP) ................................... 7-88
CHECKING THE FUEL LEVEL WARNING LIGHT .................................7-89
CHECKING THE SPEED SENSOR ........................................................ 7-89
CHECKING THE THROTTLE POSITION SENSOR ...............................7-89
CHECKING THE FUEL PUMP................................................................7-90
CHECKING THE EXUP SERVO MOTOR............................................... 7-90
CHECKING THE INTAKE AIR PRESSURE SENSOR ........................... 7-91
CHECKING THE AIR TEMPERATURE SENSOR ..................................7-91