Yamaha FJR13AG Service Manual page 772

No. Item
240 O sensor
2
(Correction value re-
mains at upper limit)
241 O sensor
2
(Correction value re-
mains at lower limit)
242 ISC (idle speed con-
trol)
(Correction value re-
mains at upper limit)
243 ISC (idle speed con-
trol)
(Correction value re-
mains at lower limit)
244 Difficult/unable to start
engine
Symptom
Correction value re- • Open or short circuit
mains at upper limit
during O feedback
2
• Low fuel pressure
• Clogged fuel injector
• Sensor malfunction
• Defective ECU
• Defective fuel injec-
Correction value re- • Open or short circuit
mains at lower limit
during O feedback
2
• Low fuel pressure
• Clogged fuel injector
• Sensor malfunction
• Defective ECU
• Defective fuel injec-
Correction value re- Low engine idling
mains at upper limit speed
while the engine is • Clogged throttle body
idling • Improperly adjusted
• Defective fuel injec-
• Dirty or worn spark
• Defective battery
• Defective ECU
Correction value re- High engine idling
mains at lower limit speed
while the engine is • Improperly adjusted
idling
• Defective fuel injec-
• Dirty or worn spark
• Defective battery
• Defective ECU
Engine starting diffi- • Empty fuel tank
cult/unable condition • Defective fuel injec-
detected
• Dirty or worn spark
• Defective battery
• Defective ECU
9-27
EVENT CODE TABLE
Possible cause
• If a fault code is indi-
in the wire harness cated, perform the
between the sensor checks and mainte-
and the ECU nance jobs for the
fault code first.
* Event code number
240 may be indicated
even if the system is
normal.
tion system
• If a fault code is indi-
in the wire harness cated, perform the
between the sensor checks and mainte-
and the ECU nance jobs for the
fault code first.
* Event code number
241 may be indicated
even if the system is
normal.
tion system
• Execute the diagnos-
tic mode (diagnostic
code number 67) and
check the ISC main-
throttle cable tenance require-
ments.
tion system • If a fault code is indi-
cated, perform the
plug 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-
throttle cable nance jobs for the
fault code first.
tion system * Event code number
243 may be indicated
plug even if the system is
normal.
• If a fault code is indi-
cated, perform the
tion system checks and mainte-
nance jobs for the
plug fault code first.
* Event code number
244 may be indicated
even if the system is
normal.
Remarks