Yamaha FZ09E 2014 Service Manual page 386

Fault code No.
Item
Item Probable cause of
malfunction and check
1 Installed condition of O
sor.
2 Connection of O
2
coupler.
Check the locking condition
of the coupler.
Disconnect the coupler and
check the pins (bent or bro-
ken terminals and locking
condition of the pins).
3 Connection of wire harness
ECU coupler.
Check the locking condition
of the coupler.
Disconnect the coupler and
check the pins (bent or bro-
ken terminals and locking
condition of the pins).
4 Wire harness continuity.
24
O sensor: no normal signals are received from the O
2
sor.
Maintenance job
sen- Improperly installed sensor
2
 Reinstall or replace the
sensor.
Improperly connected 
sensor
Connect the coupler securely
or replace the wire harness.
Improperly connected 
Connect the coupler securely
or replace the wire harness.
Open or short circuit 
Replace the wire harness.
Between O
and ECU coupler.
gray/green–gray/green
pink/black–pink/black
Between O
and joint connector.
black/blue–black/blue
red/white–red/white
Between joint connector and
ECU coupler.
black/blue–black/blue
Between joint connector and
fuse box 1.
red/white–red/white
8-51
FUEL INJECTION SYSTEM
Confirmation of service
Start the engine, warm it up,
and then race it, or execute
the diagnostic mode. (Code
No. 63)
Fault code number is not dis-
played  Service is finished.
Fault code number is dis-
played  Go to item 2.
Start the engine, warm it up,
and then race it, or execute
the diagnostic mode. (Code
No. 63)
Fault code number is not dis-
played  Service is finished.
Fault code number is dis-
played  Go to item 3.
Start the engine, warm it up,
and then race it, or execute
the diagnostic mode. (Code
No. 63)
Fault code number is not dis-
played  Service is finished.
Fault code number is dis-
played  Go to item 4.
Start the engine, warm it up,
and then race it, or execute
sensor coupler the diagnostic mode. (Code
2
No. 63)
Fault code number is not dis-
played  Service is finished.
Fault code number is dis-
sensor coupler
2
played  Go to item 5.
sen-
2
completion