Yamaha YZF-R1(B) 2012 Service Manual page 494

Fault code No.
Symptom
Fail-safe action
Diagnostic monitor-
ing code No.
Meter display
Checking method
Item/components and
probable cause
1 Connection of throttle servo
motor coupler
Check the connection of the
coupler is secure.
Remove the coupler, and
check each pin (for bending,
wear, or locking).
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).
3 Check the ETV (Electronic
Throttle Valve) fuse.
4 Continuity of wire harness
5 Throttle servo motor malfunc-
tion
60
Defect Found in YCC-T Drive
Engine startup: Possible under certain conditions
Riding: Possible under certain conditions
—
—
—
Check or maintenance job
Poor connection → Connect
it securely, or replace the
wire harness.
Poor connection → Connect
it securely, or replace the har-
ness.
Abnormality → Replace the
ETV (Electronic Throttle
Valve) fuse.
Open or short circuit →
Replace the wire harness.
Light green/Red–Light green/
Red
Yellow/Red–Yellow/Red
Refer to "CHECKING THE
THROTTLE SERVO
MOTOR" on page 8-144.
Throttle servo motor malfunc-
tion → Replace the throttle
body.
FUEL INJECTION SYSTEM
8-97
Sensor inspection proce-
dure
Place the main switch to the
ON position, and check the
fault code indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
Place the main switch to the
ON position, and check the
fault code indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
Place the main switch to the
ON position, and check the
fault code indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
Place the main switch to the
ON position, and check the
fault code indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
Place the main switch to the
ON position, and check the
fault code indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.