Toyota 22R-E Service Manual page 429

EG2–152
To reduce HC and CO emissions, this system draws in air into exhaust ports to accelerate oxidation, using vacuum
generated by the exhaust pulsation in the exhaust manifold.
Engine Coolant
Condition
Temp.
Below 25
Normal driving
Deceleration Above 35SC (95SF)
ENGINE
PULSED SECONDARY AIR
INJECTION (PAIR) SYSTEM
Throttle Valve
Position
S S
C (77 F)
Idling
– EMISSION CONTROL SYSTEMS
Engine RPM
Below 1,000 rpm
Between 1,200
– 3,200 rpm
PAIR
VSV
OFF
OFF