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:
Reporting safety defects
If you believe that your vehicle
has a defect which could cause a
crash or could cause injury or
death, you should immediately
inform the national highway traffic
safety administration (nhtsa)
in addition to notifying american
suzuki motor corp.
If nhtsa receives similar complaints,
it ma ...
DTC table
In the lcd (display) panel, the malfunction code is indicated from small code
to large code.
*1 To get the proper signal from the throttle position sensor, the sensor basic
position is indicated in the lcd
(display) panel. The malfunction code is indicated in three digits. In front o ...
Ect sensor inspection
Refer to “dtc “c15” (p0115-h/l): ect sensor circuit malfunction” in section
1a .
Inspect the ect sensor in the following procedures:
remove the ect sensor. Refer to “ect sensor removal and installation” .
Connect the ect sensor (1) to the circuit tester and
place it in the o ...