Service manual

YCC-S (Yamaha Chip Controlled-Shift) SYSTEM
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Fault code No. Sh_ _23 Symptom No input signal from sidestand switch.
Order Item/components and probable
cause
Check or maintenance job Reinstatement
method
1 Connections
• Wire harness MCU (motor control
unit) coupler
• 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.
Repairing the
cause of the
malfunction.
2 Open circuit in wire harness. • Repair or replace if there is an
open circuit.
• Between sidestand switch cou-
pler and MCU (motor control
unit) coupler.
(blue/green–blue/green)
3 Defective sidestand switch. • Check and replace if defective.
Refer to “CHECKING THE
SWITCHES” in chapter 8.
(Manual No.: 3P6-28197-E0)
Fault code No. Sh_ _25 Symptom Error has occurred in the actuator drive circuit
in MCU (motor control unit) when main switch is
turned to “ON”.
Order Item/components and probable
cause
Check or maintenance job Reinstatement
method
1 Malfunction in MCU (motor control
unit).
Replace the MCU (motor control
unit).
Replacing the
MCU (motor
control unit).