Self Diagnostic - Yamaha MT-09 2021 Service Manual

SELF-DIAGNOSTIC FUNCTION..................................................................... 9-1
GLOSSARY............................................................................................... 9-1
OUTLINE ...................................................................................................9-1
CHECKING THE WARNING LIGHT .........................................................9-2
YDT ...........................................................................................................9-3
PARTS CONNECTED TO THE ECU ........................................................9-4
PARTS CONNECTED TO THE ABS ECU................................................ 9-4
PRECAUTIONS FOR ROAD TEST .......................................................... 9-4
COPE WITH THE MIL FLASHING ............................................................ 9-4
SYSTEM DIAGRAM ........................................................................................9-5
ECU CIRCUIT DIAGRAM..........................................................................9-5
ECU COUPLER LAYOUT ......................................................................... 9-8
FUEL INJECTION SYSTEM..........................................................................9-12
CIRCUIT DIAGRAM ................................................................................ 9-12
BASIC PROCESS FOR TROUBLESHOOTING ..................................... 9-16
[A] THE MIL COMES ON/FLASHES AND ENGINE OPERATION IS
NOT NORMAL........................................................................................ 9-17
[B] THE MIL DOES NOT COME ON, BUT THE ENGINE
OPERATION IS NOT NORMAL ............................................................. 9-17
IMMOBILIZER SYSTEM................................................................................ 9-18
CIRCUIT DIAGRAM ................................................................................ 9-18
SYSTEM OUTLINE ................................................................................. 9-22
PART REPLACEMENT AND KEY CODE REGISTRATION
REQUIREMENTS...................................................................................9-23
TROUBLESHOOTING ............................................................................9-26
HOW TO CHECK DTC............................................................................9-27
CRUISE CONTROL SYSTEM (for MTN890D) ............................................. 9-28
CIRCUIT DIAGRAM ................................................................................ 9-28
CRUISE CONTROL CIRCUIT OPERATION...........................................9-30
BASIC INSTRUCTIONS FOR TROUBLESHOOTING ............................ 9-31
BASIC PROCESS FOR TROUBLESHOOTING ..................................... 9-32
[A] CHECKING THE CRUISE CONTROL SYSTEM INDICATOR
LIGHT ..................................................................................................... 9-33
[B-1] DIAGNOSIS USING THE DTC .......................................................9-33
[B-2] DIAGNOSIS USING THE MALFUNCTION HISTORY CODES...... 9-33
[B-3] MALFUNCTION HISTORY IS NOT DISPLAYED........................... 9-33
[C-1] ERASING THE DTC ....................................................................... 9-34
[C-2] FINAL CHECK ................................................................................ 9-34

SELF DIAGNOSTIC

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