Yamaha 2004 YP400 Service Manual page 344

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ELEC
IMMOBILIZER SYSTEM................................................................................ 8-49
SYSTEM DIAGRAM ................................................................................ 8-49
CIRCUIT DIAGRAM ................................................................................ 8-50
GENERAL INFORMATION ..................................................................... 8-51
KEY CODE REGISTRATION .................................................................. 8-52
SELF-DIAGNOSIS MALFUNCTION CODES..........................................8-54
TROUBLESHOOTING ............................................................................8-56
CHECKING THE IMMOBILIZER SYSTEM ............................................. 8-57
PART REPLACEMENT KEY REGISTRATION REQUIREMENTS.........8-59