Yamaha FZ1-N Service Manual page 375

Fault code No. 12
Diagnostic code No.
Orde Item/components and probable
r
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.
No normal signals are received from the crankshaft posi-
Symptom
—
cause
FUEL INJECTION SYSTEM
tion sensor.
Check or maintenance job
Check for looseness or pinching. Cranking the
• Check the couplers for any pins
that may have pulled out.
• Check the locking condition of
the couplers.
• If there is a malfunction, repair it
and connect the coupler
securely.
• Repair or replace if there is an
open or short circuit.
• Between the crankshaft position
sensor coupler and ECU cou-
pler.
(Gray–Gray)
(Black/Blue–Black/Blue)
• Replace if defective.
Refer to "CHECKING THE
CRANKSHAFT POSITION
SENSOR" on page 8-104.
8-51
—
Reinstatement
engine.
method