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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:

Crankcase breather (pcv) cover inspection
Inspect the crankcase breather (pcv) cover in the following procedures:  remove the crankcase breather (pcv) cover. Refer to “crankcase breather (pcv) hose / reed valve / cover removal and installation” .  Inspect the crankcase breather (pcv) cover for carbon deposit. If carbon ...

Front brake caliper removal and installation
Note the right and left calipers are installed symmetrically and therefore the removal procedure for one side is the same as that for the other side. Removal Drain brake fluid. Refer to “brake fluid replacement” in section 4a .  Remove the brake hose from the cali ...

Steering system inspection
Inspect steering system initially at 1 000 km (600 miles, 2 months) and every 12 000 km (7 500 miles, 24 months) thereafter Steering should be adjusted properly for smooth turning of handlebars and safe running. Overtighten steering prevents smooth turning of the handlebars and too loose steer ...

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