Yamaha 2016 Grizzly yf700gg, Service Manual, Page: 398 / 474

FUEL INJECTION SYSTEM
9-43
Fault code No. 22
Item Intake air temperature sensor: open or short circuit detected.
Fail-safe system
Able to start engine
Able to drive vehicle
Diagnostic code No. 05
Indicated Displays the intake air temperature.
Procedure
Compare the actually measured intake air temperature with the indicated
value.
Item
Probable cause of malfunc-
tion and check
Maintenance job
Confirmation of service com-
pletion
1 Connection of intake air tem-
perature sensor coupler.
Check the locking condition of
the coupler.
Disconnect the coupler and
check the pins (bent or broken
terminals and locking condition
of the pins). Improperly connected
→
Con-
nect the coupler securely or re-
place the wire harness.
Turn the main switch to “ ”
(on).
Fault code number is not dis-
played
→
Service is finished.
Fault code number is displayed
→
Go to item 2.
2 Connection of ECU coupler.
Check the locking condition of
the coupler.
Disconnect the coupler and
check the pins (bent or broken
terminals and locking condition
of the pins). Improperly connected
→
Con-
nect the coupler securely or re-
place the wire harness.
Turn the main switch to “ ”
(on).
Fault code number is not dis-
played
→
Service is finished.
Fault code number is displayed
→
Go to item 3.
3 Wire harness continuity. Open or short circuit
→
Replace
the wire harness.
Between intake air temperature
sensor coupler and ECU cou-
pler.
brown/white–brown/white
Between intake air temperature
sensor coupler and joint cou-
pler.
black/blue–black/blue
Between joint coupler and ECU
coupler.
black/blue–black/blue
Turn the main switch to “ ”
(on).
Fault code number is not dis-
played
→
Service is finished.
Fault code number is displayed
→
Go to item 4.
4 Installed condition of intake air
temperature sensor.
Check for looseness or pinch-
ing. Improperly installed sensor
→
Reinstall or replace the sensor.
Turn the main switch to “ ”
(on).
Fault code number is not dis-
played
→
Service is finished.
Fault code number is displayed
→
Go to item 5.