170 VL1500K5 (’05-MODEL)
EXHAUST EMISSION CONTROL SYSTEM (PAIR SYSTEM)
The exhaust emission control system is composed of the PAIR system and THREE-WAY CATALYST sys-
tem (For E-02, 19, 24 and 33). The fresh air is drawn into the exhaust port through 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, EOTS, IATS, IAPS and CKPS.
1
PAIR control solenoid valve
6
HO2 sensor (E-02, 19, 24)
2
PAIR reed valve
7
Three-way catalyst (E-02, 19, 24, 33)
3
Fresh air from air cleaner box.
A
FRESH AIR
4
Fuel injector
B
EXHAUST GAS
5
ECM
SA
MP
LE
