Yamaha 2006 FJR1300AS Service Manual page 120

Fault code No. Sh_ _31
Order Item/components and probable
cause
1 Connections
• Wire harness MCU (motor control
unit) coupler
• Wire harness ECU coupler
2 Open or short circuit in wire harness.
Fault code No. Sh_ _32
Order Item/components and probable
cause
1 Connections
• Wire harness MCU (motor control
unit) coupler
• YCC-S speed sensor coupler
2 Open or short circuit in wire harness.
3 Defective YCC-S speed sensor.
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.
YCC-S (Yamaha Chip Controlled-Shift) SYSTEM
Symptom
Symptom
– 111 –
Engine speed signal is abnormal.
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 ECU coupler and
MCU (motor control unit) cou-
pler.
(yellow/black–yellow/black)
YCC-S speed sensor signal is abnormal.
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 YCC-S speed sensor
coupler and MCU (motor con-
trol unit) coupler.
(white/yellow–white/yellow)
(blue–blue)
(black/blue–black/blue)
• Replace if detective.
Refer to "CHECKING THE
YCC-S SPEED SENSOR" on
page 132.
Reinstatement
method
Repairing the
cause of the
malfunction.
Reinstatement
method
Turning the
main switch to
"OFF".
See NOTE.