Toyota TERCEL 1985 Repair Manual page 134

EC-46
Carburetor Side
Below 22°C
w
ffl
No Air
Above 29°C
EMISSION CONTROL SYSTEMS - Auxiliary Systems
INSPECTION OF HIC SYSTEM
CHECK HIC VALVE BY BLOWING AIR
HAI Diaphragm
Side
EC3308
(a) Check that air flows from the HAI diaphragm side to
the carburetor side while closing the atmospheric
port.
(b) Check that air does not flow from the carburetor side
to the HAI diaphragm side.
(c) Below 22°C (72°F), check that air does not flow from
the HAI diaphragm side to the atmospheric port while
closing the intake manifold side.
(d) Heat the HIC valve to above 29°C (84°F).
CAUTION: Do not let w a t e r get inside the HIC valve.
(e) Check that air flows from the HAI diaphragm side to
the atmospheric port while closing
manifold side.
the intake