Fault Code 46 - Yamaha FZ8NA Service Manual

Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
Procedure
Item/components and
probable cause
1 Charging system malfunction Check the charging system.
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
Procedure
Item/components and
probable cause
1 Installation status of sub-
throttle position sensor
2 Connection of sub-throttle
position sensor coupler
Check the connection of the
coupler is secure.
Remove the coupler, and
check each pin (for bending,
wear, or locking).
3 Connection of wire harness
ECU coupler
Check the connection of the
coupler is secure.
Remove the coupler, and
check each pin (for bending,
wear, or locking).
46
Incorrect voltage is supplied to the ECU.
Able to start engine
Able to drive vehicle
—
—
—
Check or maintenance job
Refer to "CHARGING SYS-
TEM" on page 8-19.
Check the rectifier/regulator,
AC magneto and wire har-
ness. → Replace if defective.
47
Sub-throttle position sensor: open or short circuit detected. (no nor-
mal signals are received from the sub-throttle position sensor.)
Able to start engine
Able to drive vehicle
—
—
—
Check or maintenance job
Check the mounting section
for a loose or pinched mount-
ing.
Poor connection → Connect it
securely, or repair/replace the
wire harness.
Poor connection → Connect it
securely, or repair/replace the
wire harness.
FUEL INJECTION SYSTEM
8-98
Sensor inspection proce-
dure
Start and idle the engine for
approximately 5 seconds.
Then, check the fault code
indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Recheck.
Sensor inspection proce-
dure
Place the main switch to the
ON position, and check the
fault code indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
Place the main switch to the
ON position, and check the
fault code indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.
Place the main switch to the
ON position, and check the
fault code indication.
No fault code indicated. →
Recovered.
Fault code indicated. →
Check the next step.