Yamaha Star XVS950A 2009 Service Manual page 324

Fault code No.
Symptom
Fail-safe action
Diagnostic monitor-
ing code No.
Meter display
Checking method
Order
1
2
14
The intake air pressure sensor has failed (due to clogging of hose or
sensor disconnection).
Engine startup: Possible
Riding: Possible
03
When engine is stopped: Make sure that the atmospheric pressure
is indicated.
When engine is cranking: The indication value changes because the
intake air pressure changes.
Item/components and
probable cause
The intake air pressure
sensor hose is dam-
aged, disconnected,
clogged, twisted or
bent.
Intake air pressure sen-
sor malfunction
FUEL INJECTION SYSTEM
Check or mainte-
nance job
Repair or replace the
sensor hose.
Check in the diagnos-
tic mode (Code No.
03).
When engine is
stopped: Atmospheric
pressure at the current
altitude and weather
conditions is indicated.
0 m above sea level:
Approx. 101 kPa
1000 m above sea
level: Approx. 90 kPa
2000 m above sea
level: Approx. 80 kPa
3000 m above sea
level: Approx. 70 kPa
When engine is crank-
ing: Make sure that the
indication value
changes.
The value does not
change when engine is
cranking. → Replace
the intake air pressure
sensor.
Sensor inspection pro-
cedure
Refer to "CHECKING
THE INTAKE AIR
PRESSURE SEN-
SOR" on page 7-104.
7-37
Sensor inspection
procedure
Starting the engine and
operating it at idle.
Fully close the throttle
and check the fault
recovery.