Toyota TERCEL 1985 Repair Manual page 143

EMISSION CONTROL SYSTEMS - Auxiliary Systems
INSPECTION OF AAP SYSTEM
1. CHECK SYSTEM WITH COLD ENGINE
2.
IF NO PROBLEM IS FOUND WITH THIS INSPECTION, THE
SYSTEM IS OKAY; OTHERWISE INSPECT EACH PART
INSPECTION OF AAP DIAPHRAGM
CHECK DIAPHRAGM OPERATION AT IDLE
EC3803
INSPECTION OF TVSV
(See page EC-22)
(a) Check that the coolant temperature is below 50°C
(122°F).
(b) Remove the air cleaner cover.
(c) Start the engine.
(d) Pinch the AAP hose, and stop the engine.
(e) Reléase the hose.
(f) Check that gasoline spurts out from the acceleration
nozzle.
REPEAT (c), (d) AND (e) ABOVE AFTER WARM-UP
(a) Check that gasoline does not spurt out from the
acceleration nozzle.
(b) Reinstall the air cleaner cover.
(a) Start the engine.
(b) Disconnect the hose from the AAP diaphragm.
(c) Apply and reléase the vacuum directly to the AAP
diaphragm at idle.
(d) Check that the engine rpm changes by releasing
vacuum.
(e) Reconnect the AAP hose.
If a problem is found, replace the diaphragm.
EC-55