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 descriptionSpecial tools and equipment
Recommended service material
Note
required service material is also described in the following.
“Rear lighting system construction”
Special tool
...
Side-stand / ignition interlock system parts
inspection
Check the interlock system for proper operation. If the
interlock system does not operate properly, check each
component for damage or abnormalities. If any
abnormality is found, replace the component with a new
one.
Side-stand switch
Turn the ignition switch off.
Remove the left si ...
Front fork components
Front fork cap
O-ring
Rebound damping force adjuster rod
Compression damping force adjuster rod
Piston rod nut
O-ring
Piston ring
Rod guide case
Spring
Piston rod
Spring collar b
Spring
Spring collar a
Slide bushing
Outer tu ...