Yamaha YFM7FGPW Service Manual page 290

Fault code No. 22
Diagnostic code No. D05
Order Item/components and probable
cause
1 Installed condition of air tempera-
ture sensor.
2 Connections
• Intake air temperature sensor
coupler
• Main wire harness-ECU coupler
3 Open or short circuit in wire har-
ness.
4 Defective air temperature sensor.
FUEL INJECTION SYSTEM
Symptom Intake air temperature sensor: open or short circuit
detected.
Intake air temperature sensor
Check or maintenance job
Check for looseness or pinching.
• 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 intake air temperature
sensor coupler and ECU coupler
(brown/white–brown/white)
(black/blue–black/blue)
• Execute the diagnostic mode.
(Code No.D05)
• Replace if defective.
Refer to "CHECKING THE
INTAKE AIR TEMPERATURE
SENSOR".
6 - 18
FI
Reinstatement
method
Turning the
main switch to
"ON".