Yamaha 2009 YZF-R1Y, Service Manual

Page: 431 / 526

FUEL INJECTION SYSTEM
8-44
EAS14B1085
TROUBLESHOOTING DETAILS
This section describes the measures per fault code number displayed on the meter. Check and ser-
vice the items or components that are the probable cause of the malfunction following the order
given.
After the check and service of the malfunctioning part has been completed, reset the meter display
according to the reinstatement method.
Fault code No.:
Code number displayed on the meter when the engine failed to work normally.
Diagnostic code No.:
Diagnostic code number to be used when the diagnostic mode is operated. Refer to “DIAGNOSTIC
MODE” on page 8-38.
Fault code No. 11
Symptom
Normal signals are not received from the cylinder identification sen-
sor.
Fail-safe action
Engine startup: Impossible
Riding: Possible
Diagnostic monitor-
ing code No.
—
Meter display —
Checking method —
Item/components and
probable cause
Check or maintenance job
Sensor inspection proce-
dure
1 Connection of cylinder identi-
fication 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.
Crank the engine, and check
the fault code indication.
No fault code indicated.
→
Recovered.
Fault code indicated.
→
Check the next step.
2 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.
Crank the engine, and check
the fault code indication.
No fault code indicated.
→
Recovered.
Fault code indicated.
→
Check the next step.
3 Continuity of wire harness Open or short circuit
→
Replace the wire harness.
White/Black–White/Black
Black/Blue–Black/Blue
Blue–Blue
Crank the engine, and check
the fault code indication.
No fault code indicated.
→
Recovered.
Fault code indicated.
→
Check the next step.
4 Sensor installation status
- Check the mounting section
for loose or pinched mount-
ing.
Incorrect installation
→
Rein-
stall or repair the sensor.
Crank the engine, and check
the fault code indication.
No fault code indicated.
→
Recovered.
Fault code indicated.
→
Check the next step.