Electrical System - Yamaha WR250F Owner's Service Manual

ELECTRICAL SYSTEM

IGNITION SYSTEM ..........................................................................................9-2
CIRCUIT DIAGRAM ...................................................................................9-2
TROUBLESHOOTING ...............................................................................9-4
ELECTRIC STARTING SYSTEM .....................................................................9-6
CIRCUIT DIAGRAM ...................................................................................9-6
STARTING CIRCUIT CUT-OFF SYSTEM OPERATION ...........................9-8
TROUBLESHOOTING .............................................................................9-10
CHARGING SYSTEM.....................................................................................9-12
CIRCUIT DIAGRAM .................................................................................9-12
TROUBLESHOOTING .............................................................................9-14
LIGHTING SYSTEM .......................................................................................9-16
CIRCUIT DIAGRAM .................................................................................9-16
TROUBLESHOOTING .............................................................................9-18
SIGNALING SYSTEM ....................................................................................9-20
CIRCUIT DIAGRAM .................................................................................9-20
TROUBLESHOOTING .............................................................................9-22
COOLING SYSTEM........................................................................................9-24
CIRCUIT DIAGRAM .................................................................................9-24
TROUBLESHOOTING .............................................................................9-26
FUEL INJECTION SYSTEM...........................................................................9-28
CIRCUIT DIAGRAM .................................................................................9-28
ECU SELF-DIAGNOSTIC FUNCTION.....................................................9-30
TROUBLESHOOTING METHOD.............................................................9-31
YAMAHA DIAGNOSTIC TOOL ................................................................9-32
TROUBLESHOOTING DETAILS .............................................................9-35
FUEL PUMP SYSTEM....................................................................................9-56
CIRCUIT DIAGRAM .................................................................................9-56
TROUBLESHOOTING .............................................................................9-58
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