Yamaha FZ8NA Service Manual page 453

Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
Procedure
Item/components and
probable cause
2 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).
3 Connection of fuel injection
system sub-wire harness
coupler
Check the connection of the
coupler is secure.
Remove the coupler and
check each pin (for bending,
wear, or locking).
4 Continuity of wire harness
5 Sensor installation status
- Check the mounting sec-
tion for loose or pinched
mounting.
13
Intake air pressure sensor: open or short circuit detected. (no nor-
mal signals are received from the intake air pressure sensor.)
Able to start engine
Able to drive vehicle
d:03
Displays the intake air pressure.
Set the engine stop switch to "
while pushing the start switch " ". (If the display value changes,
the performance is OK.)
Check or maintenance job
Poor connection → Connect it
securely, or repair/replace the
wire harness.
Poor connection → Connect it
securely, or repair/replace the
wire harness.
Open or short circuit →
Replace the wire harness.
Black/blue–Black/blue
Pink/white–Pink/white
Blue–Blue
Incorrect installation → Rein-
stall or repair the sensor.
FUEL INJECTION SYSTEM
", and then operate the throttle
8-58
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.
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.