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 descriptionSerial number location
You need to know the frame and
engine serial numbers to get title
documents for your motorcycle.
You also need these numbers to
help your dealer when you order
parts.
The frame number 1 is stamped
on the steering head as shown in
the illustration. The engine serial
number 2 Is stamped ...
Front wheel related parts inspection
Refer to “front wheel assembly removal and installation” .
Tire
Refer to “tire inspection” in section 0b .
Front brake disc
Refer to “front brake disc inspection” in section 4b .
Dust seal
Inspect the lip of dust seals for wear or damage. If any
defects are found, replace the dust seal ...
Air cleaner element inspection
Inspect air cleaner element
every 6 000 km (4 000 miles, 12 months)
Inspection
Remove the air cleaner element. Refer to “air cleaner element removal
and installation” in section 1d .
Inspect the air cleaner element for clogging. If it is
clogged with dirt, replace it with a new on ...