Yamaha 2009 YZF-R1Y, Service Manual

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FUEL INJECTION SYSTEM
8-62
6 O
2
sensor malfunction Check the O
2
sensor for an
abnormality.
Refer to “ENGINE
REMOVAL” on page 5-3.
O
2
sensor malfunction
→
Replace the O
2
sensor
Either start and warm up the
engine, and then racing it, or
reset it with diagnostic code
63.
No fault code indicated.
→
Recovered.
Fault code indicated.
→
Check the next step.
7 ECU malfunction Replace the ECU.
Fault code No. 30
Symptom Turnover of vehicle
Fail-safe action
Engine startup: Impossible
Riding: Impossible
Diagnostic monitor-
ing code No.
D:08
Meter display
Lean angle sensor
• 0.4–1.4 (upright)
• 3.7–4.4 (overturned)
Checking method Remove the lean angle sensor and incline it more than 45 degrees.
Item/components and
probable cause
Check or maintenance job
Sensor inspection proce-
dure
1 Turnover of vehicle Raise the vehicle to the
upright position Place the main switch to the
ON position.
(however, the engine cannot
be restarted unless the main
switch is first turned OFF)
No fault code indicated.
→
Recovered.
Fault code indicated.
→
Check the next step.
2 Sensor installation status Check for a loose mounting,
pinched mounting, or sensor
mounting direction (up or
down).
Make sure that the mounting
position is correct. Place the main switch to the
ON position.
(however, the engine cannot
be restarted unless the main
switch is first turned OFF)
No fault code indicated.
→
Recovered.
Fault code indicated.
→
Check the next step.
Fault code No. 24
Symptom
The O
2
sensor does not operate.
Fail-safe action
Engine startup: Possible
Riding: Possible
Diagnostic monitor-
ing code No.
—
Meter display —
Checking method —
Item/components and
probable cause
Check or maintenance job
Sensor inspection proce-
dure