Yamaha FJR1300AS(X) Service Manual page 683

YCC-S (Yamaha Chip Controlled-Shift) SYSTEM (FJR1300AS
Fault code No. Sh_ _15
Order Item/components and probable
cause
1 Connections
• Wire harness MCU (motor control
unit) coupler
• Clutch actuator motor coupler
• Shift actuator motor coupler
2 Open or short circuit in wire harness.
3 YCC-S motor control fuse
4 Defective clutch or shift actuator mo-
tor drive circuit.
5 Confirm the operation of the main
switch after repairing the malfunction
or correcting the cause.
NOTE:
If the main switch is turned to "OFF", the fault code number will disappear from the display and will not
be displayed again when the main switch is turned back to "ON". Therefore, use the engine stop switch
to stop the engine, not the main switch. If the fault code number has disappeared, activate the diagnos-
tic mode and select diagnostic code No. Sh_ _61. The fault code numbers can be confirmed in the mal-
function history.
Symptom Abnormal current is detected in clutch or shift
actuator motor drive circuit.
Check or maintenance job
• Check the coupler for any pins
that may be pulled out.
• Check the locking condition of
the coupler.
• If there is a malfunction, repair it
and connect the coupler se-
curely.
• Repair or replace if there is an
open or short circuit.
• Between clutch actuator motor
coupler and MCU (motor con-
trol unit) coupler.
(black/white–black/white)
(red/white–red/white)
• Between shift actuator motor
coupler and MCU (motor con-
trol unit) coupler.
(black/blue–black/blue)
(red–red)
• Between battery and YCC-S
motor control fuse terminal.
(red–red)
• Between YCC-S motor control
fuse and MCU (motor control
unit).
(red/black–red/black)
• Replace if defective.
• Replace the clutch actuator or
shift actuator.
• Execute the diagnostic mode.
(Code No. Sh_ _63 and Sh_
_64)
8-206
only)
Reinstatement
method
Turning the
main switch to
"OFF".
See NOTE.