Inspection

INSPECTION




1. INSPECT CHARCOAL CANISTER ASSY
a. Visually check the charcoal canister for cracks or damage. If cracks or damage are found, replace the canister.




b. Check canister operation.
1. With the purge port closed, below 0.39 kPa (4.0 kgf/sq.cm, 0.06 psi) of air into the vent port, and check that air flows from the air inlet port.

If the result is not as specified, replace the canister.




2. With the vent port closed, below 0.39 kPa (0.0039 kgf/sq.cm, 0.05 psi) of air into the air inlet port, and check that air flows from the purge port.

If the result is not as specified, replace the canister.




c. Check the air tightness.
1. While holding the vent and air inlet ports closed, apply vacuum (3.43 kPa, 25.7 mmHg, 1.01 in.Hg) to the purge port, and check that the vacuum is maintained for 1 minute.

If the result is not as specified, replace the charcoal canister assy.




d. Check the leak detection pump.
1. Remove the detection pump from the canister.
2. Check that air flows from port A to B and then to C.

If the result is not as specified, replace the canister.




3. Connect the positive (+) lead of the battery to terminal 7 and the negative (-) lead to terminal 6.
4. Check that the valve is closed.
If the result is not as specified, replace the canister.
5. Install the detection pump.







2. INSPECT VACUUM SWITCHING VALVE ASSY FOR ACIS
a. Measure the VSV resistance.

If the result is not as specified, replace the VSV assy.




b. Check VSV operation.
1. Check that air does not flow from port E to port F. If the result is not as specified, replace the VSV assy.




2. Apply battery positive voltage across the terminals.
3. Check that air flows from port E to port F.

If the result is not as specified, replace the VSV assy.




3. INSPECT VENTILATION VALVE SUB-ASSY
a. Install a clean hose to the ventilation valve.
b. Inspect ventilation valve operation.
1. Blow air from the cylinder head side of the engine, and check that air passes through easily.

CAUTION: Do not suck air through the valve. Petroleum substances stuck to the valve is harmful.




2. Blow air from the intake manifold side of the engine, and check that air passes through with difficulty.

If the result is not as specified, replace the ventilation valve.

c. Remove the clean hose from the ventilation valve.




4. INSPECT FUEL TANK CAP ASSY
a. Visually check if cap and/or gasket are deformed or damaged.

If necessary, repair or replace the cap.







5. INSPECT PURGE VSV
a. Measure the purge VSV resistance.
If the result is not as specified, replace the purge VSV.




b. Check purge VSV operation.
1. Check that air does not flow from port E to port F.

If the result is not as specified, replace the purge VSV.




2. Apply batter positive voltage across the terminals.
3. Check that air flow from port E to port F.

If the result is not as specified, replace the purge VSV.