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 descriptionEct sensor removal and installation
Removal
Remove the left side cowling. Refer to “exterior parts removal and
installation” in section 9d .
Drain engine coolant. Refer to “cooling system inspection” in section
0b .
Disconnect the coupler and remove the ect sensor
(1).
Caution
take special care ...
Rear shock absorber removal and installation
Removal
Remove the right side cowling and side frame covers. Refer to “exterior
parts removal and installation” in section 9d .
Support the motorcycle with a jack to relieve load on
the rear shock absorber.
Remove the left muffler and muffler chamber heat guard no. 2. Refer ...
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 ...