Yamaha 2009 YZF-R1 (Y) User Manual

FUEL INJECTION SYSTEM
8-63
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
1O
2
sensor installation status Check the sensor for a loose
mounting or a pinch
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.
2 Connection of O
2
sensor
coupler
Check the connection of the
coupler is secure.
Remove the coupler, and
check each pin (for bending,
wear, or locking).
Poor connection → Connect
it securely, or repair/replace
the wire harness.
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.
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).
Poor connection → Connect
it securely, or repair/replace
the wire harness.
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.
4 Continuity of 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
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.
5 Check the fuel pressure. Refer to “CHECKING THE
FUEL PRESSURE” on page
7-18.
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.

Yamaha 2009 YZF-R1 (Y) Specifications

General

Brand	Yamaha
Model	2009 YZF-R1 (Y)
Category	Motorcycle
Language	English