Yamaha 2014 MT-07 Service Manual page 454

Fault code No. 24
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
Procedure
Probable cause of malfunc-
Item
tion and check
1 Installed condition of O
2 Connection of O
pler.
Check the locking condition of
the coupler.
Disconnect the coupler and
check the pins (bent or broken
terminals and locking condition
of the pins).
3 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).
4 Wire harness continuity.
24
O sensor: no normal signals are received from the O
2
Able to start engine
Able to drive vehicle
—
—
—
sensor. Improperly installed sensor →
2
Reinstall or replace the sensor.
Improperly connected → Con-
sensor cou-
2
nect the coupler securely or re-
place the wire harness.
Improperly connected → Con-
nect the coupler securely or re-
place the wire harness.
Open or short circuit → Replace
the wire harness.
Between O
ECU coupler.
gray/green–gray/green
pink/black–pink/black
Between O
joint coupler.
black/blue–black/blue
red/white–red/white
Between joint coupler and joint
coupler.
black/blue–black/blue
Between joint coupler and ECU
coupler.
black/blue–black/blue
Between joint coupler and igni-
tion fuse.
red/white–red/white
FUEL INJECTION SYSTEM
Maintenance job
sensor coupler and
2
sensor coupler and
2
8-49
sensor.
2
Confirmation of service com-
pletion
Start the engine, warm it up,
and then race it, or execute the
diagnostic mode. (Code No. 63)
Fault code number is not dis-
played → Service is finished.
Fault code number is displayed
→ Go to item 2.
Start the engine, warm it up,
and then race it, or execute the
diagnostic mode. (Code No. 63)
Fault code number is not dis-
played → Service is finished.
Fault code number is displayed
→ Go to item 3.
Start the engine, warm it up,
and then race it, or execute the
diagnostic mode. (Code No. 63)
Fault code number is not dis-
played → Service is finished.
Fault code number is displayed
→ Go to item 4.
Start the engine, warm it up,
and then race it, or execute the
diagnostic mode. (Code No. 63)
Fault code number is not dis-
played → Service is finished.
Fault code number is displayed
→ Go to item 5.