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.
Full close
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 ...
Other materials:
Exhaust pipe bolt and muffler bolt inspection
Tighten exhaust pipe bolts and muffler bolts
initially at 1 000 km (600 miles, 2 months) and every
12 000 km (7 500 miles, 24 months) thereafter
Check the exhaust pipe bolts and muffler bolts to the
specified torque.
Tightening torque
exhaust pipe bolt (a): 23 n·m (2.3 Kgf-m, 16.5 Lbf-ft)
muf ...
Front wheel related parts inspection
Refer to “front wheel assembly removal and installation” .
Tire
Refer to “tire inspection” in section 0b .
Front brake disc
Refer to “front brake disc inspection” in section 4b .
Dust seal
Inspect the lip of dust seals for wear or damage. If any
defects are found, replace the dust seal ...
Stv actuator removal and installation
Refer to “throttle body disassembly and assembly” in section 1d .
Caution
never remove the stva from the throttle
body.
Isc valve inspection
Refer to “dtc “c40” (p0505 / p0506 / p0507): isc valve circuit malfunction”
in section 1a .
Isc valve removal and installation
Refer t ...