Yamaha YZF-R1(B) 2012 Service Manual page 461

Fault code No.
Symptom
Fail-safe action
Diagnostic monitor-
ing code No.
Meter display
Checking method
Item/components and
probable cause
1 O sensor installation status
2
2 Connection of O
coupler
Check the connection of the
coupler is secure.
Remove the coupler, and
check each pin (for bending,
wear, or locking).
3 Connection of main harness
ECU coupler
Check the connection of the
coupler is secure.
Remove the coupler, and
check each pin (for bending,
wear, or locking).
4 Continuity of wire harness
5 Check the fuel line pressure. Refer to "CHECKING THE
24
The O sensor does not operate.
2
Engine startup: Possible
Riding: Possible
—
—
—
Check or maintenance job
Check the sensor for a loose
mounting or a pinch
Poor connection → Connect
sensor
2
it securely, or repair/replace
the wire harness.
Poor connection → Connect
it securely, or repair/replace
the wire harness.
Open or short circuit → Con-
nect it securely, or repair/
replace the wire harness.
Black/Blue–Black/Blue
Pink/Black–Pink/Black
Red/Blue–Red/Blue
Gray/Green–Gray/Green
FUEL LINE PRESSURE" on
page 7-18.
FUEL INJECTION SYSTEM
8-64
Sensor inspection proce-
dure
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.
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.
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.
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.
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.