Yamaha XV19SW Service Manual page 343

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 .............................................. 7-82
CHECKING THE SPARK PLUG CAPS .................................................. 7-83
CHECKING THE IGNITION COILS ........................................................ 7-83
CHECKING THE CRANKSHAFT POSITION SENSOR ......................... 7-84
CHECKING THE LEAN ANGLE SENSOR ............................................. 7-84
CHECKING THE STARTER MOTOR OPERATION............................... 7-85
CHECKING THE STATOR COIL ............................................................ 7-85
CHECKING THE RECTIFIER/REGULATOR.......................................... 7-85
CHECKING THE HORNS ....................................................................... 7-86
CHECKING THE ENGINE TEMPERATURE SENSOR .......................... 7-87
CHECKING THE FUEL SENDER (FUEL TANK).................................... 7-87
CHECKING THE FUEL SENDER (FUEL PUMP) ................................... 7-88
CHECKING THE FUEL LEVEL WARNING LIGHT................................. 7-88
CHECKING THE SPEED SENSOR........................................................ 7-88
CHECKING THE THROTTLE POSITION SENSOR............................... 7-89
CHECKING THE FUEL PUMP................................................................ 7-89
CHECKING THE EXUP SERVO MOTOR .............................................. 7-90
CHECKING THE INTAKE AIR PRESSURE SENSOR ........................... 7-90
CHECKING THE AIR TEMPERATURE SENSOR.................................. 7-90