Suzuki GSX-R 1000 Service Manual: Exhaust control system operation
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 description
The exhaust control system (excs) consists of the exhaust control valve (excv),
exhaust control valve actuator
(excva) and exhaust control valve cables (excv cables).
Excv is installed in the ex ...
Other materials:
Drive chain related parts inspection
Refer to “rear sprocket / rear sprocket mounting drum removal and
installation” .
Dust seal
Inspect the dust seal for wear or damage. If any damage
is found, replace the dust seal with a new one.
Bearing
Inspect the play of the sprocket mounting drum bearing
by hand while it is in the dr ...
Fuel pressure inspection
Keep away from fire or spark.
Spilled gasoline should be wiped off
immediately.
Work in a well-ventilated area.
Inspect the fuel pressure in the following procedures:
lift and support the fuel tank. Refer to “fuel tank removal and
installati ...
Cushion lever 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 cushion levers.
Remove the left muffler and muffler chamber heat guard no. 2. Refer to
...