Yamaha STAR XVS95CE 1TP1 2014, Service Manual

Page: 345 / 422

FUEL INJECTION SYSTEM
7-32
EAS27460
TROUBLESHOOTING DETAILS
This section describes the measures per fault code number displayed on the multi-function meter dis-
play. Check and service the items or components that are the probable cause of the malfunction fol-
lowing the order given.
After the check and service of the malfunctioning part has been completed, reset the multi-function
meter display according to the reinstatement method.
Fault code No.:
Code number displayed on the multi-function meter when the engine failed to work normally. Refer to
“Self-Diagnostic Function table”.
Diagnostic code No.:
Diagnostic code number to be used when the diagnostic mode is operated. Refer to “SELF-DIAGNOS-
TIC FUNCTION AND DIAGNOSTIC CODE TABLE” on page 8-5.
Fault code No. 12
Item
Crankshaft position sensor: no normal signals are received
from the crankshaft position sensor.
Fail-safe system
Unable to start engine
Unable to drive vehicle
Diagnostic code No. —
Indicated —
Procedure —
Item
Probable cause of mal-
function and check
Maintenance job
Confirmation of service
completion
1 Connection of crankshaft po-
sition 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.
Crank the engine.
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.
Crank the engine.
Fault code number is not dis-
played
→
Service is finished.
Fault code number is dis-
played
→
Go to item 3.
3 Wire harness continuity. Open or short circuit
→
Re-
place the wire harness.
Between crankshaft position
sensor coupler and ECU
coupler.
green/yellow–green/yellow
Between crankshaft position
sensor coupler and joint cou-
pler.
black/blue–black/blue
Between joint coupler and
ECU coupler.
black/blue–black/blue
Crank the engine.
Fault code number is not dis-
played
→
Service is finished.
Fault code number is dis-
played
→
Go to item 4.