Yamaha FJR13AEV(C) Service Manual page 643

YCC-S (Yamaha Chip Controlled-Shift) SYSTEM (FJR13AE only)
Fault
Symptom
code No.
Overcurrent to clutch
Sh_ _13*
actuator motor
Overcurrent to clutch
Sh_ _14*
actuator motor
Abnormal current is
detected in clutch or
Sh_ _15*
shift actuator motor
drive circuit.
Malfunction of clutch
or shift actuator mo-
Sh_ _16* tor drive circuit in
MCU (motor control
unit)
Detected clutch actu-
Sh_ _17* ator position is incor-
rect.
Detected shift actua-
Sh_ _18* tor position is incor-
rect.
Output signal of shift
Sh_ _19* actuator sensor is ab-
normal.
Output signal of gear
Sh_ _21 position sensor is ab-
normal.
Output signal of foot
Sh_ _22 shift switch is abnor-
mal.
No input signal from
Sh_ _23
sidestand switch.
Error has occurred in
actuator drive circuit
in MCU (motor control
Sh_ _25
unit) when main
switch is turned to
"ON".
Abnormal clutch
movement is detect-
Sh_ _26* ed during check when
main switch is turned
to "ON".
Diagnostic mode is
Sh_ _27* activated at engine
start-up.
Malfunction detecting condition
Detected current in shift actuator
motor is too high.
Detected current in clutch actuator
motor is too high.
Detected current in clutch actuator
motor or shift actuator motor is dif-
ferent from MCU (motor control
unit) signals.
Drive circuit in MCU (motor control
unit) is not working properly.
Detected clutch actuator position
is different from MCU (motor con-
trol unit) signals.
Detected shift actuator position is
different from MCU (motor control
unit) signals.
Output signal of shift actuator sen-
sor is below 0.5 V or above 4.5 V.
Output signal of gear position sen-
sor is below 0.3 V or above 4.7 V.
Output signal of foot shift switch is
below 0.9 V or above 4.1 V.
No signal is received from side-
stand switch while vehicle is driv-
en.
Drive circuit error is detected dur-
ing YCC-S system check when
main switch is turned to "ON".
Detected clutch motor current
when main switch is turned to
"ON" is too high.
Diagnostic mode signal is received
when vehicle is started (YCC-S
test coupler is connected).
8-172
Able/un-
Able/un- able to
able to start change the
shift
Unable Unable
Unable Unable
Unable Unable
Unable Unable
Unable Unable
Unable Unable
Unable Unable
Unable Unable
Able Able
Able Able
Unable Unable
Unable Unable
Able Able