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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.

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Suzuki GSX-R. 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 ...

Repair instructions
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Other materials:

Drive chain replacement
Use the special tool in the following procedures, to cut and rejoin the drive chain. Note when using the special tool, apply a small quantity of grease to the threaded parts of the special tool. Special tool : 09922–22711 (drive chain cutting and joint tool set) Driv ...

Engine sprocket removal and installation
Removal Remove the gearshift link arm (1) from the gearshift shaft. Note mark the gearshift shaft head at which the gearshift link arm slit set for correct reinstallation. Remove the speed sensor (2). Remove the engine sprocket cover (3). Support the ...

Brake fluid
Check the brake fluid level in both front and rear brake fluid reservoirs. If the level in either reservoir is below the lower mark, inspect for brake pad wear and leaks. Warning Brake fluid is harmful or fatal if swallowed, and harmful if it comes in contact with skin or ...

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