9-4 EMISSION CONTROL INFORMATION
EXHAUST EMISSION CONTROL SYSTEM (PAIR SYSTEM)
The exhaust emission control system is composed of the PAIR system and THREE-WAY CATALYST sys-
tem. The fresh air is drawn into the exhaust port with the PAIR solenoid valve and PAIR reed valve. The
PAIR solenoid valve is operated by the ECM, and the fresh air flow is controlled according to the TPS,
ECTS, IATS, IAPS and CKPS.
ECM
Three-way
catalyst
PAIR reed valve
HO
2 sensor
PAIR control solenoid valve
FRESH AIR
EXHAUST GAS
PAIR
reed valve
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