Yamaha Star XVS950A 2009 Service Manual page 325

Fault code No.
Symptom
Fail-safe action
Diagnostic monitor-
ing code No.
Meter display
Checking method
Order
1
2
3
4
15
Open or short circuit of throttle position sensor lead
Engine startup: Possible under certain conditions
Riding: Possible under certain conditions
01
Display the throttle opening (between 0 and 125 degrees)
When throttle is fully closed: 15 to 18 degrees
When throttle is fully opened: 97 to 102 degrees
Check the values when the throttle is fully closed and opened.
Item/components and
probable cause
Connection of throttle
position sensor coupler
Check the connection
of the coupler is
secure.
Remove the coupler,
and check each pin (for
bending, wear, or lock-
ing).
Connection of main
harness ECU coupler
Check the connection
of the coupler is
secure.
Remove the coupler,
and check each pin (for
bending, wear, or lock-
ing).
Continuity of wire har-
ness
Sensor installation sta-
tus
FUEL INJECTION SYSTEM
Check or mainte-
nance 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 har-
ness.
Black/Blue–Black/Blue
Yellow–Yellow
Blue–Blue
Check for loose mount-
ing, pinched mounting,
or hard mounting.
Make sure that the
mounting position is
correct.
Refer to "ADJUSTING
THE THROTTLE POSI-
TION SENSOR" on
page 6-11.
7-38
Sensor inspection
procedure
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.