Yamaha MBK X-MAX 300 2017 Service Manual page 457

No. Item
242 ISC (idle speed control)
(Correction value re-
mains at upper limit)
243 ISC (idle speed control)
(Correction value re-
mains at lower limit)
244 Difficult/unable to start
engine
245 Engine stall
Symptom
Correction value re-
mains at upper limit
while the engine is
idling
Correction value re-
mains at lower limit
while the engine is
idling
Engine starting difficult/
unable condition detect-
ed
Engine stall detected
9-12
EVENT CODE TABLE
Possible cause
Low engine idling
speed
• Clogged throttle body
• Improperly adjusted
throttle cable
• Defective fuel injec-
tion system
• Dirty or worn spark
plug
• Defective battery
• Defective ECU
High engine idling
speed
• Improperly adjusted
throttle cable
• Defective fuel injec-
tion system
• Dirty or worn spark
plug
• Defective battery
• Defective ECU
• Empty fuel tank
• Defective fuel injec-
tion system
• Dirty or worn spark
plug
• Defective battery
• Defective ECU
• Empty fuel tank
• Improperly adjusted
throttle cable
• Defective fuel injec-
tion system
• Dirty or worn spark
plug
• Defective battery
• Defective ECU
Remarks
• Execute the diagnos-
tic mode (diagnostic
code number 67) and
check the ISC mainte-
nance requirements.
• If a fault code is indi-
cated, perform the
checks and mainte-
nance jobs for the
fault code first.
* Event code number
242 may be indicated
even if the system is
normal.
• If a fault code is indi-
cated, perform the
checks and mainte-
nance jobs for the
fault code first.
* Event code number
243 may be indicated
even if the system is
normal.
• If a fault code is indi-
cated, perform the
checks and mainte-
nance jobs for the
fault code first.
* Event code number
244 may be indicated
even if the system is
normal.
• If a fault code is indi-
cated, perform the
checks and mainte-
nance jobs for the
fault code first.
* Event code number
245 may be indicated
even if the system is
normal.