Yamaha FJR13AEV(C) Service Manual page 651

YCC-S (Yamaha Chip Controlled-Shift) SYSTEM (FJR13AE only)
Fault code No. Sh_ _11
Order Item/components and probable
cause
1 Connections
• Wire harness MCU (motor control
unit) coupler
2 Faulty battery
3 Malfunction in rectifier/regulator
4 Open or short circuit in wire harness.
Fault code No. Sh_ _12
Order Item/components and probable
cause
1 Malfunction in MCU (motor control
unit).
Symptom Too low or too high voltage is supplied to the
YCC-S system.
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.
• Replace or charge the battery.
Refer to "CHECKING AND
CHARGING THE BATTERY" on
page 8-218.
• Replace if detective.
Refer to "CHARGING SYS-
TEM" on page 8-29.
• Repair or replace if there is an
open or short circuit.
• Between battery and main
switch coupler.
(red–red)
• Between main switch coupler
and signaling system fuse.
(brown/blue–brown/blue)
• Between signaling system fuse
and MCU (motor control unit)
coupler.
(brown–brown)
Symptom Malfunction of power cut-off function in the
MCU (motor control unit).
Check or maintenance job
Replace the MCU (motor control
unit).
8-180
Reinstatement
method
Repairing the
cause of the
malfunction.
Reinstatement
method
Repairing the
cause of the
malfunction.