Adjust the engine idle speed periodically on the engine at normal operating temperature.
To adjust the idle speed:

Engine oil and filter change
Throtile cable playHeadlight bulb and position light bulb
replacement
Caution
when you touch the bulb with your bare
hands, clean the bulb with a cloth moistened
with alcohol or soap water to prevent
premature bulb failure.
Low beam bulb
Remove the combination meter. Refer to “combination meter removal and
installation” in section 9c .
...
Rear wheel components
Rear axel nut
Collar
Dust seal
Bearing
Retainer
Rear sprocket
Sprocket mounting drum
Wheel damper
Bearing
Spacer
Air valve
Rear wheel
Wheel balancer
Rear tire
Dust seal
Collar
Rear brake disc
Rear axle
1 ...
DTC “c49” (p1656): pair control solenoid
valve circuit malfunction
Detected condition and possible cause
Detected condition
Possible cause
Pair control solenoid valve voltage is not input to ecm
Pair control solenoid valve circuit open or short.
Pair control solenoid valve malfunction.
Ecm malfunction.
...