Yamaha R1 Series 2015 Service Manual page 576

Fault code No.
Item
Meter display
Procedure
Item Probable cause of
malfunction and check
1 Connection of throttle servo
motor coupler.
Check the locking condition of
the coupler.
Disconnect the coupler and
check the pins (bent or broken
terminals and locking condition
of the pins).
2 Connection of wire harness
ECU coupler.
Disconnect the coupler and
check the pins (bent or broken
terminals and locking condition
of the pins).
3 Check the electronic throttle
valve fuse.
4 Wire harness continuity.
5 Defective throttle servo motor.
6 Defective throttle bodies.
7 Malfunction in ECU.
60
YCC-T drive system: malfunction detected.
—
—
Maintenance job
Improperly connected
nect the coupler securely or
replace the wire harness.
Improperly connected
nect the coupler securely or
replace the wire harness.
Abnormality Replace the
electronic throttle valve fuse.
Open or short circuit
the wire harness.
Between throttle servo motor
coupler and ECU coupler.
yellow/red–yellow/red
light green/red–light green/red
Between ECU coupler and fuse
box (electronic throttle valve
fuse).
red/blue–red/blue
Check the throttle servo motor.
Replace the throttle bodies if
defective.
Refer to "CHECKING THE
THROTTLE SERVO MOTOR"
on page 8-192.
Check the throttle bodies.
Replace if defective.
Refer to "CHECKING THE
THROTTLE SERVO MOTOR"
on page 8-192.
Replace the ECU.
Refer to "REPLACING THE
ECU (Engine Control Unit)" on
page 8-180.
8-95
FUEL INJECTION SYSTEM
Confirmation of service com-
Con- Turn the main switch to "ON".
Fault code number is not dis-
played Service is finished.
Fault code number is displayed
Go to item 2.
Con- Turn the main switch to "ON".
Fault code number is not dis-
played Service is finished.
Fault code number is displayed
Go to item 3.
Turn the main switch to "ON".
Fault code number is not dis-
played Service is finished.
Fault code number is displayed
Go to item 4.
Replace Turn the main switch to "ON".
Fault code number is not dis-
played Service is finished.
Fault code number is displayed
Go to item 5.
Turn the main switch to "ON".
Fault code number is not dis-
played Service is finished.
Fault code number is displayed
Go to item 6.
Turn the main switch to "ON".
Fault code number is not dis-
played Service is finished.
Fault code number is displayed
Go to item 7.
pletion