Yamaha FZ09E 2014 Service Manual page 387

Fault code No.
Item
5 Check fuel pressure.
6 Defective O sensor.
2
7 Malfunction in ECU.
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
Procedure
Item Probable cause of
malfunction and check
1 Connection of intake air pres-
sure sensor 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).
24
O sensor: no normal signals are received from the O
2
sor.
Refer to "CHECKING THE
FUEL PRESSURE" on page
7-11.
Check the O sensor.
2
Replace if defective.
Refer to "ENGINE
REMOVAL" on page 5-3.
Replace the ECU.
Refer to "REPLACING THE
ECU (engine control unit)" on
page 8-93.
25
Intake air pressure sensor 2: open or short circuit detected.
Able to start engine
Able to drive vehicle
04
Displays the intake air pressure.
Shift the transmission into gear, extend the sidestand, and then
operate the throttle while pushing the " " side of the start/engine
stop switch. (If the display value changes, the performance is OK.)
Maintenance job
Improperly connected 
Connect the coupler securely
or replace the wire harness.
8-52
FUEL INJECTION SYSTEM
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 6.
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 7.
Confirmation of service
completion
Turn the main switch to "ON".
Fault code number is not dis-
played  Service is finished.
Fault code number is dis-
played  Go to item 2.
sen-
2