Yamaha WR125R 2009 Service Manual page 329

Fault code No. 14
Diagnostic code No.
Order Item/components and probable
cause
1 Connections
• Throttle body sensor assembly cou-
pler
• Wire harness ECU coupler
2 Defective throttle body sensor assem-
bly (intake air pressure sensor).
Symptom Throttle body malfunction (clogged intake air pressure
sensor hole or improperly installed throttle body sensor
assembly).
Intake air system malfunction (correct pressure is not
supplied to throttle body sensor assembly)
D03 Intake air pressure sensor
FUEL INJECTION SYSTEM
Check or maintenance job
• 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 se-
curely.
• Execute the diagnostic mode.
(Code No.D03)
• Replace the throttle body if de-
fective.
Refer to "CHECKING THE
THROTTLE BODY SENSOR
ASSEMBLY" on page 8-75.
ECA22B1014
NOTICE
Do not remove the throttle
body sensor assembly from
the throttle body.
8-44
Reinstatement
method
Start the en-
gine and let it
run at idle.