Yamaha Star XVS950A 2009 Service Manual page 336

Fault code No.
Symptom
Fail-safe action
Diagnostic monitor-
ing code No.
Meter display
Checking method
Order
1
2
3
4
33
Front cylinder ignition coil primary lead malfunction
Engine startup: Possible (depending on the number of failed cylin-
ders)
Riding: Possible (depending on the number of failed cylinders)
30
Each ignition coil turns On or Off 5 times per second.
The engine warning light flashes according to the On/Off switching.
Make sure that the engine warning light flashes according to the On/
Off switching of ignition coil.
Item/components and
probable cause
Connection of ignition
coil 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
Ignition coil installation
status
FUEL INJECTION SYSTEM
Check or mainte-
nance job
Poor connection →
Connect it securely or
replace the wire har-
ness.
Poor connection →
Connect it securely or
replace the wire har-
ness.
Open or short circuit →
Replace the wire har-
ness.
Orange–Orange
Check the mounting
section for a loose or
pinched mounting.
Make sure that the
mounting position is
correct.
7-49
Sensor inspection
procedure
Start and idle the
engine for approxi-
mately 5 seconds.
Then, check the fault
code indication.
No fault code indicated.
→ Recovered.
Fault code indicated. →
Check the next step.
Start and idle the
engine for approxi-
mately 5 seconds.
Then, check the fault
code indication.
No fault code indicated.
→ Recovered.
Fault code indicated. →
Check the next step.
Start and idle the
engine for approxi-
mately 5 seconds.
Then, check the fault
code indication.
No fault code indicated.
→ Recovered.
Fault code indicated. →
Check the next step.
Start and idle the
engine for approxi-
mately 5 seconds.
Then, check the fault
code indication.
No fault code indicated.
→ Recovered.
Fault code indicated. →
Check the next step.