Yamaha 2011 FZ8NA(C) Service Manual page 406

Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
Procedure
Item/components and
probable cause
3 Lean angle sensor malfunc-
tion
4 ECU malfunction
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Actuation
Procedure
Item/components and
probable cause
1 Connection of ignition coil
coupler
Check the connection of the
coupler is secure.
Remove the coupler, and
check each pin (for bending,
wear, or locking).
30
Latch up detected.
No normal signals are received from the lean angle sensor.
Unable to start engine
Unable to drive vehicle
d:08
Lean angle sensor output voltage
• 0.4–1.4 (upright)
• 3.7–4.4 (overturned)
Remove the lean angle sensor and incline it more than 65 degrees.
Check or maintenance job
Diagnostic mode (Code No.
d08).
Sensor inspection procedure
Refer to "CHECKING THE
LEAN ANGLE SENSOR" on
page 8-109.
In vertical position:
0.4–1.4 V
When turned over:
3.7–4.4 V
Indication is incorrect. →
Replace the lean angle sen-
sor.
Replace the ECU.
33
Cylinder-#1 ignition coil: open or short circuit detected in the pri-
mary lead of the cylinder-#1 ignition coil.
Able to start engine (depending on the number of faulty cylinders)
Able to drive vehicle (depending on the number of faulty cylinders)
d:30
Actuates the cylinder-#1 ignition coil five times at one-second inter-
vals.
Illuminates the engine trouble warning light.
Check that a spark is generated five times.
• Connect an ignition checker.
Check or maintenance job
Poor connection → Connect it
securely or replace the wire
harness.
8-57
FUEL INJECTION SYSTEM
Sensor inspection proce-
Place the main switch to the
ON position.
(however, the engine cannot
be restarted unless the main
switch is first turned OFF)
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
Sensor inspection proce-
Start and idle the engine for
approximately 5 seconds.
Then, check the fault code
indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
dure
dure