Yamaha MT-01 T 2005 Service Manual page 355

Code number displayed on the meter when the engine failed to work normally. Refer to "Self-Diagnos-
tic Function table".
Diagnostic code No.:
Diagnostic code number to be used when the diagnostic mode is operated. Refer to "DIAGNOSTIC
MODE" on page 7-31.
Fault code No. 12
Diagnostic code No.
Order Item/components and probable
cause
1 Installed condition of crankshaft
position 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.
— —
FUEL INJECTION SYSTEM
Check or maintenance job
Check for looseness or pinching. Cranking the
• Check the coupler for any pins
that may be pulled out.
• Check the locking condition of
the coupler.
• 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
coupler.
(gray–gray)
(black/blue–black/blue)
• Replace if defective.
Refer to "CHECKING THE
CRANKSHAFT POSITION
SENSOR" on page 7-100.
7-40
Reinstatement
method
engine.