Yamaha R1 Series 2015, Руководство по обслуживанию

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FUEL INJECTION SYSTEM
8-70
Fault code No. 24
6 Malfunction in ECU. Replace the ECU.
Refer to “REPLACING THE
ECU (Engine Control Unit)” on
page 8-180.
Fault code No. 24
Item O
2
sensor 1: no normal signals are received from the O
2
sensor 1.
Fail-safe system Able to start engine
Able to drive vehicle
Diagnostic code No. —
Meter display —
Procedure —
Item Probable cause of
malfunction and check
Maintenance job Confirmation of service com-
pletion
1 Installed condition of O
2
sensor
1.
Improperly installed sensor
o
Reinstall or replace the sensor.
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
o
Service is finished.
Fault code number is displayed
o
Go to item 2.
2 Connection of O
2
sensor 1 cou-
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).
Improperly connected
o
Con-
nect the coupler securely or
replace the wire harness.
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
o
Service is finished.
Fault code number is displayed
o
Go to item 3.
3 Connection of wire harness
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
o
Con-
nect the coupler securely or
replace the wire harness.
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
o
Service is finished.
Fault code number is displayed
o
Go to item 4.
Fault code No. 23
Item Atmospheric pressure sensor: open or short circuit detected.