Visually inspect the isc valve if necessary.

Throttle body inspection and cleaning
Throttle valve synchronizationDTC “c31” (p0705): gp switch circuit
malfunction
Detected condition and possible cause
Detected condition
Possible cause
No gear position switch voltage
Gp switch voltage is not within the following range.
Gp switch voltage > 0.6 V
Gp switch circuit open or short.
Gp switch malfunction.
...
Sprocket mounting drum dust seal / bearing removal and installation
Removal
Remove the rear wheel assembly. Refer to “rear wheel assembly removal
and installation” in section 2d .
Remove the rear sprocket mounting drum assembly
(1). Refer to “rear sprocket / rear sprocket
mounting drum removal and installation” (page 3a-
3).
Remove the ...
Precautions
Precautions for engine cooling system
You can be injured by boiling fluid or steam if you open the
radiator cap when the engine is hot.
After the engine cools, wrap a thick cloth around cap and carefully
remove the cap by turning it a
quarter turn to allow pr ...