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 descriptionDrive chain cleaning and lubricating
Clean and lubricate drive chain
every 1 000 km (600 miles)
Clean and lubricate the drive chain in the following
procedures:
clean the drive chain with kerosine. If the drive chain
tends to rust quickly, the intervals must be
shortened.
Caution
do not use trichloroethyle ...
Gearshift shaft construction
Gearshift shaft
Washer
Snap ring
Gearshift shaft return spring
Gearshift cam drive plate
Gearshift plate return spring
8.5 N·m (0.85 Kgf-m,
6.0 Lbf-ft)
13 N·m
(1.3 Kgf-m, 9.5 Lbf-ft)
19 N·m
(1.9 Kgf-m, 13.5 Lbf-ft)
Apply ...
Air cleaner element removal and installation
Removal
Lift and support the fuel tank. Refer to “fuel tank
removal and installation” in section 1g (page 1g-
9).
Remove the air cleaner box cover (1).
Remove the air cleaner element (2).
Installation
Installation is in the reverse order of removal. ...