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 descriptionConrod crank pin bearing removal and
installation
Refer to “engine bottom side disassembly” (page 1d-
49).
Refer to “engine bottom side assembly” .
Removal
Remove the conrod crank pin bearings (1).
Note
do not remove the bearings (1) unless
absolutely necessary.
Make a note of where the bearings are
removed ...
Front brake master cylinder / brake lever disassembly and assembly
Refer to “front brake master cylinder assembly removal and installation” .
Disassembly
Remove the reservoir cap (1), plate (2), diaphragm
(3) and reservoir tank (4).
Remove the brake light switch (5) and brake lever
(6).
Remove the dust boot (7) and push rod (8).
  ...
Battery runs down quickly
Troubleshooting
Step
Action
Yes
No
1
Check accessories which use excessive amounts of
electricity.
Are accessories being installed?
Remove accessories.
Go to step 2.
2
Check the battery for current leakage. Refer to “battery
cu ...