Suzuki GSX-R1000 2007, Service Manual

Page: 541 / 549

11-4 EMISSION CONTROL INFORMATION
EXHAUST EMISSION CONTROL SYSTEM
The exhaust emission control system is composed of the PAIR system, exhaust control system, three-way
catalyst system and ISC system. The fresh air is drawn into the exhaust port through the PAIR control sole-
noid valve and PAIR reed valve. The PAIR control solenoid valve is operated by the ECM, which is con-
trolled according to the signals from TPS, ECTS, IATS, IAPS and CKPS. The exhaust gas flow is performed
by the exhaust control valve actuator which is controlled by the ECM by changing the exhaust control valve
angle. ISC valve adjusts the bypass air volume of the throttle body to control engine idling speed with vari-
ous sensor signals by varying engine running conditions and the idling control contributes to reduce exhaust
emission level.
PAIR control solenoid valve Exhaust control valve actuator
PAIR reed valve Exhaust control valve
Air cleaner box Three-way catalyst
Primary fuel injector
"
HO2 sensor
Secondary fuel injector
"
FRESH AIR
ISC valve
#
EXHAUST GAS
ECM