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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:

Drive chain cleaning and lubricating
Clean and lubricate drive chain every 1 000 km (600 miles) Clean and lubricate the drive chain in the following procedures:  clean the drive chain with kerosine. If the drive chain tends to rust quickly, the intervals must be shortened. Caution do not use trichloroethyle ...

DTC “c15” (p0115-h/l): ect sensor circuit malfunction
Detected condition and possible cause Detected condition Possible cause C15 Output voltage is not with in the following range. 0.15 V ≤ Sensor voltage < 4.85 V Ect sensor circuit open or short.  Ect sensor malfunction.  Ec ...

Engine bottom side disassembly
Note the crankcase must be separated to service the crankshaft and conrod. Remove the engine assembly from the frame. Refer to “engine assembly removal” .  Remove the engine top side (1). Refer to “engine top side disassembly” . Crankcase breather (pcv) cover R ...

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