Yamaha WR125R 2009 Service Manual page 333

Fault code No. 22
Diagnostic code No.
Order Item/components and probable
cause
1 Connections
• Throttle body sensor assembly cou-
pler
• Wire harness ECU coupler
2 Open or short circuit in wire harness.
3 Defective throttle body sensor assem-
bly (intake air temperature sensor).
Symptom Intake air temperature sensor: open or short circuit de-
tected.
D05 Intake air temperature sensor
FUEL INJECTION SYSTEM
Check or maintenance job
• 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 se-
curely.
• Repair or replace if there is an
open or short circuit.
• Between throttle body sensor
assembly coupler and ECU
coupler.
(brown/white–brown/white)
(gray/black–gray/black)
• Execute the diagnostic mode.
(Code No.D05)
• 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.
8-48
Reinstatement
method
Set the main
switch to "ON".