Yamaha YZF-R1 2020 Service Manual page 432

ELECTRICAL COMPONENTS...................................................................... 8-38
CHECKING THE SWITCHES .................................................................8-40
CHECKING THE FUSES ........................................................................8-41
REPLACING THE ECU (Engine Control Unit) ........................................ 8-41
CHECKING AND CHARGING THE BATTERY....................................... 8-42
CHECKING THE RELAYS ...................................................................... 8-42
CHECKING THE RELAY UNIT (DIODE) ................................................ 8-43
CHECKING THE IGNITION COILS......................................................... 8-44
CHECKING THE IGNITION SPARK GAP............................................... 8-45
CHECKING THE CRANKSHAFT POSITION SENSOR.......................... 8-45
CHECKING THE STARTER MOTOR OPERATION ...............................8-46
CHECKING THE STATOR COIL ............................................................ 8-46
CHECKING THE RECTIFIER/REGULATOR ..........................................8-46
CHECKING THE HORN..........................................................................8-47
CHECKING THE FUEL SENDER ........................................................... 8-47
CHECKING THE FUEL LEVEL WARNING LIGHT .................................8-48
CHECKING THE RADIATOR FAN MOTORS.........................................8-48
CHECKING THE COOLANT TEMPERATURE SENSOR.......................8-48
CHECKING THE THROTTLE SERVO MOTOR ..................................... 8-49
CHECKING THE AIR INDUCTION SYSTEM SOLENOID ......................8-49
CHECKING THE CYLINDER IDENTIFICATION SENSOR ....................8-50
CHECKING THE INTAKE AIR TEMPERATURE SENSOR ....................8-50
CHECKING THE STEERING DAMPER SOLENOID ..............................8-51
CHECKING THE FUEL INJECTORS......................................................8-51
CHECKING THE WHEEL SWITCH ........................................................ 8-52