Yamaha STAR XVS95CE 2DX1 2014 Service Manual page 357

Fault code No.
Item
Procedure
Probable cause of mal-
Item
function and check
1 Connection of front cylinder
ignition coil coupler.
Check the locking condition
of the coupler.
Disconnect the coupler and
check the pins (bent or bro-
ken terminals and locking
condition of the pins).
2 Connection of ECU coupler.
Check the locking condition
of the coupler.
Disconnect the coupler and
check the pins (bent or bro-
ken terminals and locking
condition of the pins).
3 Wire harness continuity.
4 Installed condition of front
cylinder ignition coil.
Check for looseness or
pinching.
5 Defective front cylinder igni-
tion coil.
6 Malfunction in ECU.
33
Front cylinder ignition coil: open or short circuit detected in
the primary lead of the front cylinder ignition coil.
Check that a spark is generated five times.
• Connect an ignition checker.
Maintenance job
Improperly connected →
Connect the coupler secure-
ly or replace the wire har-
ness.
Improperly connected →
Connect the coupler secure-
ly or replace the wire har-
ness.
Open or short circuit → Re-
place the wire harness.
Between front cylinder igni-
tion coil coupler and ECU
coupler.
orange–orange
Improperly installed ignition
coil → Reinstall or replace
the ignition coil.
Measure the primary coil re-
sistance of the front cylinder
ignition coil.
Replace if out of specifica-
tion.
Refer to "CHECKING THE
IGNITION COILS" on page
7-86.
Execute the diagnostic
mode. (Code No. 30)
No spark → Replace the
ECU.
7-44
FUEL INJECTION SYSTEM
Confirmation of service
completion
Start the engine and let it idle
for approximately 5 seconds.
Fault code number is not dis-
played → Service is finished.
Fault code number is dis-
played → Go to item 2.
Start the engine and let it idle
for approximately 5 seconds.
Fault code number is not dis-
played → Service is finished.
Fault code number is dis-
played → Go to item 3.
Start the engine and let it idle
for approximately 5 seconds.
Fault code number is not dis-
played → Service is finished.
Fault code number is dis-
played → Go to item 4.
Start the engine and let it idle
for approximately 5 seconds.
Fault code number is not dis-
played → Service is finished.
Fault code number is dis-
played → Go to item 5.
Start the engine and let it idle
for approximately 5 seconds.
Fault code number is not dis-
played → Service is finished.
Fault code number is dis-
played → Go to item 6.