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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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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:

Turn signal / side-stand relay removal and installation
Removal Turn the ignition switch off.  Remove the frame cover assembly. Refer to “exterior parts removal and installation” in section 9d .  Remove the turn signal/side-stand relay (1). Installation Install the turn signal/side-stand relay in the reverse order of removal ...

Precautions
Precautions for wheel and tire Proper tire pressure and proper tire loading are important factors. Over loading tire can lead to tire failure and loss of motorcycle control.  Under-inflated tires make smooth cornering difficult, and can result in rapid tire wear. ...

Piston ring removal and installation
Removal Remove the piston. Refer to “engine bottom side disassembly” .  Carefully spread the ring opening with your thumbs and then push up the opposite side of the 1st ring to remove it. Note do not expand the piston ring excessively since it is apt to be broken down. ...

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