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Suzuki GSX-R 1000 Service Manual: 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 exhaust pipe. Excva is mounted inside of the right frame. The excv is operated by the excva via the cables. This system is designed to improve the engine torque at low engine rpm.

Suzuki GSX-R. Exhaust control system description


  1. Exhaust control valve actuator (excva)
  2. Exhaust control valve (excv)
General description
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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 ac ...

Other materials:

Air cleaner element inspection
Inspect air cleaner element every 6 000 km (4 000 miles, 12 months) Inspection Remove the air cleaner element. Refer to air cleaner element removal and installation in section 1d .  Inspect the air cleaner element for clogging. If it is clogged with dirt, replace it with a new on ...

Side-stand / ignition interlock system parts inspection
Check the interlock system for proper operation. If the interlock system does not operate properly, check each component for damage or abnormalities. If any abnormality is found, replace the component with a new one. Side-stand switch Turn the ignition switch off.  Remove the left si ...

DTC c41 (p0230-h/l): fp relay circuit malfunction
Detected condition and possible cause Detected condition Possible cause C41 No voltage is applied to fuel pump. Fuel pump relay circuit open or short. Fuel pump relay malfunction. Fuel pump relay switch circuit is shorted to power source. ...

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