Yamaha Star XVS13AA(C) 2011 Service Manual page 469

EAS27460
TROUBLESHOOTING DETAILS
This section describes the measures per fault code number displayed on the meter. Check and service
the items or components that are the probable cause of the malfunction following the order given.
After the check and service of the malfunctioning part has been completed, reset the meter display ac-
cording to the reinstatement method.
Fault code No.:
Code number displayed on the 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 "DIAGNOSTIC
MODE" on page 8-53.
Fault code No. 12
Diagnostic code No.
Order Item/components and probable
cause
1 Installed condition of crankshaft posi-
tion sensor.
2 Connections
• Crankshaft position sensor coupler
• Main wire harness ECU coupler
3 Open or short circuit in wire harness.
4 Defective crankshaft position sensor.
Symptom No normal signals are received from the crankshaft posi-
tion sensor.
— —
Check or maintenance job
Check for looseness or pinching. Cranking the
• Check the coupler for any pins
• Check the locking condition of
• If there is a malfunction, repair it
• Repair or replace if there is an
• Between the crankshaft position
• Replace if defective.
8-62
FUEL INJECTION SYSTEM
that may be pulled out.
the coupler.
and connect the coupler se-
curely.
open or short circuit.
sensor coupler and ECU cou-
pler.
(gray–gray)
(black/blue–black/blue)
Refer to "CHECKING THE
CRANKSHAFT POSITION
SENSOR" on page 8-108.
Reinstatement
method
engine.