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 descriptionRear turn signal light removal and installation
Removal
Remove the frame cover assembly. Refer to “exterior parts removal and
installation” in section 9d .
Remove the rear combination light. Refer to “rear combination light
removal and installation” .
Disconnect the lead wire coupler (1).
(Lh: white, rh: black)
&nb ...
Generator removal and installation
Removal
Drain engine oil. Refer to “engine oil and filter replacement” in
section 0b .
Remove the left side cowling. Refer to “exterior parts removal and
installation” in section 9d .
Disconnect the generator coupler (1).
Remove the generator cover (2).
...
Conrod crank pin bearing inspection and
selection
Refer to “engine bottom side disassembly” (page 1d-
49).
Refer to “engine bottom side assembly” .
Inspection
Inspect the bearing surfaces for any signs of fusion,
pitting, burn or flaws. If any, replace them with a
specified set of bearings.
Place the plastigauge axially along ...