Yamaha YZF-R125 Service Manual page 318

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Fault code No. 22
Diagnostic code No.
Order Item/components and probable
cause
1 Connections
• Throttle body sensor assembly cou-
pler
• Main wire harness ECU coupler
2 Open or short circuit in wire harness.
3 Defective intake air temperature sen-
sor.
Symptom Intake air temperature sensor: open or short circuit de-
tected.
05 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.05)
• Replace the throttle body if de-
fective.
Refer to "CHECKING THE
THROTTLE BODY SENSOR
ASSEMBLY" on page 8-73.
ECA5D71011
CAUTION:
Do not remove the throttle
body sensor assembly from
the throttle body.
8-47
Reinstatement
method
Setting the
main switch to
"ON".