Yamaha 2013 FJR1300AS Service Manual page 645

5. Check the installed condition of the
gear position sensor.
Refer to "ADJUSTING THE GEAR
POSITION SENSOR" on page
5-11.
OK ↓
Replace the MCU (motor control unit).
Refer to "REPLACING THE MCU
(MOTOR CONTROL UNIT)" on page
8-174.
Cannot shift using the hand shift switch.
If MCU fault code No. Sh_ _38 is displayed together with another MCU fault code number, repair the
malfunction for that fault code number first. Then, repair the malfunction for fault code No. Sh_ _38.
EAS1MD1004
MAINTENANCE OF THE MCU (motor control
unit)
Checking the MCU (motor control unit)
1. Check:
• Terminals "1" of the MCU
Cracks/damages → Replace the MCU.
• Terminals "2" of the MCU couplers
Connection defective, contaminated, come-
off → Replace or clean.
TIP
If the MCU couplers are clogged with mud or dirt,
clean with compressed air.
EAS1MD1054
REPLACING THE MCU (MOTOR CONTROL
UNIT)
ECA1MD1022
NOTICE
When the vehicle is shipped from the facto-
ry, the gear position learning values and the
clutch stroke adjustment values are stored
in the MCU. When the MCU is replaced, the
learning values and adjustment values must
be stored in the new MCU.
YCC-S (Yamaha Chip Controlled-Shift) SYSTEM
2
1
NG →
• Adjust the gear position sensor again, or
replace the sensor and carry out the
learning for each gear position.
• Execute the diagnostic mode. (Code No.
Sh_ _65)
1. Replace the MCU (motor control unit).
2. Carry out the learning for each gear position.
Execute the diagnostic mode (code No. Sh_
_65). Refer to "SELF-DIAGNOSTIC FUNC-
TION AND DIAGNOSTIC CODE TABLE
(MCU)" on page 9-13.
3. Change the clutch stroke adjustment values
so that they are the same as the values be-
fore the MCU was replaced.
Execute the diagnostic mode (code No. Sh_
_66). Refer to "SELF-DIAGNOSTIC FUNC-
TION AND DIAGNOSTIC CODE TABLE
(MCU)" on page 9-13.
Adjustment is complete → Service is fin-
ished.
Previous adjustment values are unknown →
Go to step 4.
4. Check:
• Rear wheel drag torque
• Shift operation
Refer to "CHECKING THE VEHICLE AFTER
BLEEDING THE HYDRAULIC CLUTCH
SYSTEM" on page 3-14.
8-174