Yamaha YZF-R1 (2006) [369/426] Fuel injection system

Yamaha YZF-R1 (2006) [369/426] Fuel injection system
FUEL INJECTION SYSTEM
8-46
Fault code No. 12 Symptom
No normal signals are received from the crankshaft posi-
tion sensor.
Diagnostic code No.
Orde
r
Item/components and probable
cause
Check or maintenance job
Reinstatement
method
1 Installed condition of crankshaft posi-
tion sensor
Check for looseness or pinching. Cranking the
engine.
2 Connections
Crankshaft position sensor coupler
Main wire harness ECU coupler
Check the coupler for any pins
that may have pulled out.
Check the locking condition of
the coupler.
If there is a malfunction, repair it
and connect the coupler
securely.
3 Open or short circuit in wire harness. 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)
4 Defective crankshaft position sensor. Replace if defective.
Refer to "CHECKING THE
CRANKSHAFT POSITION
SENSOR" on page 8-84.
Fault code No. 13 Symptom Intake air pressure sensor: open or short circuit detected.
Diagnostic code No. 03 Intake air pressure sensor
Orde
r
Item/components and probable
cause
Check or maintenance job
Reinstatement
method
1 Connections
Intake air pressure sensor coupler
Main wire harness ECU coupler
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.
Reinstated
automatically if
a normal signal
is received.
2 Open or short circuit in wire harness
and/or sub-wire-harness 2.
Repair or replace if there is an
open or short circuit.
Between intake air pressure
sensor coupler and ECU cou-
pler
(Black/Blue–Black/Blue)
(Pink/White–Pink/White)
(Blue–Blue)
3 Defective intake air pressure sensor. Execute the diagnostic mode.
(Code No.03)
Replace if defective.
Refer to "CHECKING THE
INTAKE AIR PRESSURE SEN-
SOR" on page 8-91.

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