1. INSPECT VENTILATION VALVE SUB-ASSY
(a) Install a clean hose to the ventilation valve.
(b) Check ventilation valve operation.
CAUTION: Do not suck air through the valve. Petroleum substances inside the valve are harmful.
If the result is not as specified, replace the ventilation valve.
(c) Remove the hose from the ventilation valve.
2. INSPECT FUEL TANK CAP ASSY
(a) Visually check if the cap and/or gasket are deformed or damaged.
If necessary, repair or replace the cap and/or gasket.
3. INSPECT CHARCOAL CANISTER ASSY
(a) Visually check the charcoal canister for cracks or damage.
If cracks or damage is found, replace the charcoal canister assy.
(b) Check the charcoal canister operation.
If the result is not as specified, replace the charcoal canister assy.
If the result is not as specified, replace the charcoal canister assy.
If the result is not as specified, replace the charcoal canister assy.
(c) Check air tightness.
HINT: In order to maintain air tightness, the check should be performed while holding the CCV terminal port closed.
If the result is not as specified, replace the charcoal canister assy.
(d) Check the diaphragm.
Vacuum drop time: 10 seconds or more
If the result is not as specified, replace the charcoal canister assy.
(e) Measure the VSV resistance for CCV between the terminals.
Standard:
If the result is not as specified, replace the charcoal canister.
(f) Check VSV operation for CCV.
If the result is not as specified, replace the charcoal canister assy.
If the result is not as specified, replace the charcoal canister assy.
4. INSPECT VACUUM SWITCHING VALVE ASSY FOR EVAP
(a) Measure the VSV resistance.
Standard:
If the resistance is not as specified, replace the VSV assy.
(b) Check VSV operation.
If the result is not as specified, replace the VSV assy.
If the result is not as specified, replace the VSV assy.
5. INSPECT A/F SENSOR (BANK 1, 2 SENSOR 1)
(a) Measure the resistance between terminals 1 (HT) and 2 (+B) and 1 (HT) and 4 (AF-).
Standard:
If the result is not as specified, replace the sensor.
6. INSPECT HEATED OXYGEN SENSOR (BANK 1 SENSOR 2)
(a) Measure the resistance between terminals 1 (HT) and 2 (+B).
Standard:
If the result is not as specified, replace the sensor.
7. INSPECT HEATED OXYGEN SENSOR (BANK 2 SENSOR 2)
(a) Measure the resistance between terminals 1 (HT) and 2 (+B).
Standard:
If the result is not as specified, replace the sensor.
Radiator and condenser
Check the radiator and condenser and clear away any foreign objects.
If either of the above parts is extremely dirty or you are not sure of
their condition, have your vehicle inspected by your toyota dealer.
Warning
When the engine is hot
Do not touch the radiator or condenser as t ...