Yamaha R1 Series 2015 Service Manual page 551

Fault code No.
Item
6 Malfunction in ECU.
Fault code No. 24
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
Procedure
Item Probable cause of
malfunction and check
1 Installed condition of O
1.
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 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).
23
Atmospheric pressure sensor: open or short circuit detected.
Replace the ECU.
Refer to "REPLACING THE
ECU (Engine Control Unit)" on
page 8-180.
24
O sensor 1: 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.
sensor 1 cou- Improperly connected
2
nect the coupler securely or
replace the wire harness.
Improperly connected
nect the coupler securely or
replace the wire harness.
FUEL INJECTION SYSTEM
Maintenance job
Con-
Con-
8-70
sensor 1.
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.