Yamaha FZ09E 2014 Service Manual page 405

Fault code No.
Item
4 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).
5 Wire harness continuity.
6 Defective relay unit.
7 Defective clutch switch.
8 Malfunction in ECU.
42
Speed sensor: no normal signals are received from the speed
A
sensor.
B Neutral switch: open or short circuit is detected.
C Clutch switch: open or short circuit is detected.
Improperly connected 
Connect the coupler securely
or replace the wire harness.
Open or short circuit 
Replace the wire harness.
Between ECU coupler and
relay unit coupler.
black/yellow–black/yellow
Between relay unit coupler
and clutch switch coupler.
black/yellow–black/yellow
black/red–black/red
Check the relay unit.
Refer to "CHECKING THE
RELAY UNIT (DIODE)" on
page 8-99.
Check the clutch switch.
Replace if defective.
Refer to "CHECKING THE
SWITCHES" on page 8-89.
Replace the ECU.
Refer to "REPLACING THE
ECU (engine control unit)" on
page 8-93.
8-70
FUEL INJECTION SYSTEM
Execute the diagnostic
mode. (Code No. 21)
When the clutch lever is
released: "OFF"
When the clutch lever is
squeezed: "ON"
Correct indication Go to
item 9.
Incorrect indication  Go to
item 5.
Execute the diagnostic
mode. (Code No. 21)
When the clutch lever is
released: "OFF"
When the clutch lever is
squeezed: "ON"
Correct indication Go to
item 9.
Incorrect indication  Go to
item 6.
Execute the diagnostic
mode. (Code No. 21)
When the clutch lever is
released: "OFF"
When the clutch lever is
squeezed: "ON"
Correct indication Go to
item 9.
Incorrect indication  Go to
item 7.
Execute the diagnostic
mode. (Code No. 21)
When the clutch lever is
released: "OFF"
When the clutch lever is
squeezed: "ON"
Correct indication Go to
item 9.
Incorrect indication  Go to
item 8.