Yamaha XVS950CU 2014, Service Manual, Page: 440 / 580

FUEL INJECTION SYSTEM
7-49
4 Installed condition of crank-
shaft position sensor.
Check for looseness or
pinching. Improperly installed sensor
→
Reinstall or replace the
sensor.
Crank the engine.
Fault code number is not dis-
played
→
Service is finished.
Fault code number is dis-
played
→
Go to item 5.
5 Defective crankshaft posi-
tion sensor. Check the crankshaft posi-
tion sensor.
Refer to “CHECKING THE
CRANKSHAFT POSITION
SENSOR” on page 7-163.
Replace if defective. Crank the engine.
Fault code number is not dis-
played
→
Service is finished.
Fault code number is dis-
played
→
Go to item 6.
6 Malfunction in ECU. Replace the ECU.
Fault code No. 13
Item Intake air pressure sensor: open or short circuit detected.
Fail-safe system
Able to start engine
Able to drive vehicle
Diagnostic code No. 03
Indicated Displays the intake air pressure.
Procedure
Set the engine stop switch to “ ”, and then operate the throttle
while pushing the start switch “ ”. (If the display value changes,
the performance is OK.)
Item
Probable cause of mal-
function and check
Maintenance job
Confirmation of service
completion
1 Connection of intake air
pressure sensor 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). Improperly connected
→
Connect the coupler secure-
ly or replace the wire har-
ness.
Turn the main switch to “ON”.
Fault code number is not dis-
played
→
Service is finished.
Fault code number is dis-
played
→
Go to item 2.
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). Improperly connected
→
Connect the coupler secure-
ly or replace the wire har-
ness.
Turn the main switch to “ON”.
Fault code number is not dis-
played
→
Service is finished.
Fault code number is dis-
played
→
Go to item 3.
3 Connection of sub-wire har-
ness 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). Improperly connected
→
Connect the coupler secure-
ly or replace the wire har-
ness.
Turn the main switch to “ON”.
Fault code number is not dis-
played
→
Service is finished.
Fault code number is dis-
played
→
Go to item 4.
Fault code No. 12
Item
Crankshaft position sensor: no normal signals are received
from the crankshaft position sensor.