Yamaha V Star 950 Service Manual page 335

Fault code No.
Symptom
Fail-safe action
Diagnostic monitor-
ing code No.
Meter display
Checking method
Order
5
6
Fault code No.
Symptom
Fail-safe action
Diagnostic monitor-
ing code No.
Meter display
Checking method
Order
1
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
Ignition coil malfunction
(Check the resistance
of front cylinder igni-
tion coil.)
ECU malfunction
34
Rear 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)
31
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).
7-50
FUEL INJECTION SYSTEM
Check or mainte-
nance job
Refer to "CHECKING
THE IGNITION COILS"
on page 7-88.
Ignition coil inspection
method
Check in the diagnos-
tic mode (Code No.
30).
If not ignited, replace
the defective ECU.
Check or mainte-
nance job
Poor connection →
Connect it securely or
repair/replace the wire
harness.
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.
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.