Yamaha YZF-R1(B) 2012 Service Manual page 498

Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
Checking method
Item/components and
probable cause
4 Front speed sensor malfunc-
tion
Refer to "MAINTENANCE OF
THE FRONT SPEED SEN-
SOR AND SENSOR
ROTOR" on page 4-20 and
"INSTALLING THE FRONT
WHEEL (FRONT BRAKE
DISCS)" on page 4-23.
5 ECU malfunction
Fault code No.
Symptom
Fail-safe action
Diagnostic monitor-
ing code No.
Meter display
Checking method
Item/components and
probable cause
Engine idling stop
69
Normal signals are not received from the front speed sensor.
Engine startup: Possible
Riding: Possible
D:16
Vehicle speed pulses: 0–999
Make sure that the indication value increases when the rotation
speed of the front wheel increases. This value is cumulative and is
not reset each time the wheel is prevented from rotating.
Check or maintenance job
Replace the front speed sen-
sor.
Replace the ECU.
70
Engine has been left idling. (The ECU automatically stops the
engine after 20 minutes if it is left idling.)
Engine startup: Possible
Riding: Possible
—
—
—
Check or maintenance job
FUEL INJECTION SYSTEM
8-101
Sensor inspection proce-
dure
Start the engine, and check
the connection of the coupler
is secure.
Ride on the vehicle at a low
speed (approx. 20–30 km/h).
Then, check the fault code
indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
Sensor inspection proce-
dure