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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 close


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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:

Rear brake pedal construction
Footrest bracket no. 2 Footrest bracket no. 1 Rear brake peda Footrest holder Footrest 35 N·m (3.5 Kgf-m, 25.5 Lbf-ft) 23 N·m (2.3 Kgf-m, 16.5 Lbf-ft) 18 N·m (1.8 Kgf-m, 13.0 Lbf-ft) Apply grease. Apply thread lock to the ...

Rear brake pedal removal and installation
Removal Remove the master cylinder assembly. Refer to “rear brake master cylinder assembly removal and installation” .  Disconnect the rear brake light switch lead wire coupler. Refer to “rear brake light switch inspection” .  Remove the rear brake pedal as shown in the rear ...

Rear brake light switch inspection and adjustment
Check the rear brake light switch so that the brake light will come on just before pressure is felt when the brake pedal is depressed. If the brake light switch adjustment is necessary, turn the adjuster nut (1) in or out while holding the brake pedal. Brake fluid level check Refer to “bra ...

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