Toyota TERCEL 1985 Repair Manual page 132

EC-44
Air Control Valve
HIC Valve
(Closed)
HOT
Air Control Valveí
HIC Valve
(Open)
EMISSION CONTROL SYSTEMS - Auxiliary Systems
INSPECTION OF HAI SYSTEM
Diaphragm
1.
HOT AIR
Diaphragm
COOL AIR
2.
CHECK AIR CONTROL VALVE OPERATION
(a) Remove the air cleaner cover.
(b) Cool the HIC valve by blowing compressed air on it.
(c) Check that the air control valve closes the cool air
passage at idle.
(d) Reinstall the air cleaner cover and warm up the
engine.
(e) Check that the air control valve opens the cool air
passage at idle.
CHECK HOSES AND CONNECTIONS
Visually check the hoses and connections for cracks, leaks
or damage.