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Yamaha MT-09 2021 - Electrical System

Yamaha MT-09 2021
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8
ELECTRICAL SYSTEM
IGNITION SYSTEM .........................................................................................8-1
CIRCUIT DIAGRAM ..................................................................................8-1
ENGINE STOPPING DUE TO SIDESTAND OPERATION.......................8-5
TROUBLESHOOTING ..............................................................................8-6
ELECTRIC STARTING SYSTEM....................................................................8-9
CIRCUIT DIAGRAM ..................................................................................8-9
STARTING CIRCUIT CUT-OFF SYSTEM OPERATION ........................8-13
TROUBLESHOOTING ............................................................................8-15
CHARGING SYSTEM....................................................................................8-17
CIRCUIT DIAGRAM ................................................................................8-17
TROUBLESHOOTING ............................................................................8-21
LIGHTING SYSTEM ......................................................................................8-23
CIRCUIT DIAGRAM ................................................................................8-23
TROUBLESHOOTING ............................................................................8-27
SIGNALING SYSTEM ...................................................................................8-29
CIRCUIT DIAGRAM ................................................................................8-29
TROUBLESHOOTING ............................................................................8-33
COOLING SYSTEM.......................................................................................8-39
CIRCUIT DIAGRAM ................................................................................8-39
TROUBLESHOOTING ............................................................................8-43
FUEL PUMP SYSTEM...................................................................................8-45
CIRCUIT DIAGRAM ................................................................................8-45
TROUBLESHOOTING ............................................................................8-49
ELECTRICAL COMPONENTS......................................................................8-51
CHECKING THE SWITCHES .................................................................8-53
CHECKING THE FUSES ........................................................................8-55
REPLACING THE ECU (Engine Control Unit) ........................................8-56
CHECKING AND CHARGING THE BATTERY.......................................8-56
CHECKING THE RELAYS ......................................................................8-56
CHECKING THE RELAY UNIT (DIODE) ................................................8-58
CHECKING THE IGNITION COILS.........................................................8-59
CHECKING THE IGNITION SPARK GAP...............................................8-59
CHECKING THE CRANKSHAFT POSITION SENSOR..........................8-60
CHECKING THE STARTER MOTOR OPERATION ...............................8-60
CHECKING THE STATOR COIL ............................................................8-61
CHECKING THE RECTIFIER/REGULATOR ..........................................8-61

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