No Normal Signals Are Received From The Front Front Wheel Sensor - Yamaha R1 Series 2015 Service Manual

Fault code No.
Item
6 Defective O sensor 2.
2
7 Malfunction in ECU.
Fault code No. 69
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
Procedure
Item Probable cause of
malfunction and check
1 Locate the malfunction.
2 Connection of front wheel sen-
sor 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).
68
O sensor 2: no normal signals are received from the O
2
Check the O sensor 2.
2
Replace if defective.
Refer to "ENGINE REMOVAL"
on page 5-3.
Replace the ECU.
Refer to "REPLACING THE
ECU (Engine Control Unit)" on
page 8-180.
69
Front wheel sensor: no normal signals are received from the front
wheel sensor.
Able to start engine
Able to drive vehicle
16
Front wheel speed pulse
0–999
Check that the number increases when the front wheel is rotated. The
number is cumulative and does not reset each time the wheel is stopped.
Maintenance job
If the ABS warning light is on,
refer to "BASIC INSTRUC-
TIONS FOR TROUBLESHOOT-
ING" on page 8-128.
If the ABS warning light is off,
perform the following procedure.
Execute the diagnostic mode.
(Code No. 16)
Rotate the front wheel by hand
and check that the indicated
value increases.
Value increases
and delete the fault code.
Value does not increase
to item 2.
Improperly connected
nect the coupler securely or
replace the wire harness.
8-98
FUEL INJECTION SYSTEM
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
Fault code number is displayed
Go to item 7.
Confirmation of service com-
Go to item 9
Go
Con- Execute the diagnostic mode.
(Code No. 16)
Rotate the front wheel by hand
and check that the indicated
value increases.
Value increases
and delete the fault code.
Value does not increase
to item 3.
sensor 2.
2
Service is finished.
pletion
Go to item 9
Go