The excs is operated by the signal supplied from the ecm. The open/close operation of the excv is performed by the excva which is controlled by the ecm by changing the current direction of the actuator motor. The position sensor (incorporated in the excva) detects the excva movement by measuring the voltage and then the ecm determines the excv opening angle based on the engine rpm and gear positions. Every time the ignition switch is turned on, the excva automatically drives the excv and detects full close/open position voltages and sets the excv to middle position.
Full close

Full open

Exhaust control system descriptionTurn signal / side-stand relay removal and
installation
Removal
Turn the ignition switch off.
Remove the frame cover assembly. Refer to “exterior parts removal and
installation” in section 9d .
Remove the turn signal/side-stand relay (1).
Installation
Install the turn signal/side-stand relay in the reverse
order of removal ...
Swingarm pivot boss removal and installation
Removal
Remove the swingarm. Refer to “swingarm removal and installation” .
Remove the swingarm pivot boss nut (1).
Note
remove the swingarm pivot boss only when
replacing it.
Remove the swingarm pivot boss (2) by removing its
set screws.
Installatio ...
Damping force adjustment
The rebound and compression
damping force can be individually
adjusted by turning the respective
adjusters. The rebound damping
force adjuster 2 is located at the
top of the front fork. The compression
damping force adjuster 3 is
located at the bottom of the front
fork.
To adjust the da ...