Component Inspection

INSPECTION

1. INSPECT CHARCOAL CANISTER ASSY




a. Visually check the charcoal canister for cracks or damage.




b. Check the charcoal canister operation.
1. Plug the vent port with a cap.
2. While holding the purge port closed, blow air 1.76 kPa (18 gf/cm2, 0.26 psi) into the EVAP port, then check that the air flows from the air drain port.




3. While holding the purge port and the air drain port closed, blow air 1.76 kPa (18 gf/cm2, 0.26 psi) into the EVAP port and check that air does not flow from the air inlet port.




4. Apply vacuum 3.43 kPa (25.7 mmHg, 1.01 in.Hg) to the purge port, then check that the vacuum dose not decrease when the air inlet port is closed, and check that the vacuum decreases when the air inlet port is released.




5. While holding the air inlet port closed, apply vacuum 3.43 kPa (25.7 mmHg, 1.01 in.Hg) to the EVAP port and check that the air flows into the purge port.
If the operation is not as specified, replace the charcoal canister.

6. Remove the hose and cap from vent port.

2. INSPECT VACUUM SWITCHING VALVE ASSY FOR CHARCOAL CANISTER




a. Check the resistance.
1. Using an ohmmeter, measure the resistance between the terminals.




Standard:

If the resistance is not as specified, replace the VSV.




2. Using an ohmmeter, measure the resistance between the terminal and body.




Standard:

If the resistance is not as specified, replace the VSV.

b. Check the operation.




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




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

If operation is not as specified, replace the VSV.

3. INSPECT VENTILATION VALVE SUB-ASSY




a. Check the operation.
1. Install a clean hose as shown in the illustration.
2. Blow air into the cylinder head side, then check that air passes through freely.

CAUTION: Do not suck air through the ventilation valve. Petroleum substances inside the ventilation valve are harmful.




3. Blow air into the intake manifold side, then check that air does not pass through freely.

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

4. INSPECT FUEL TANK CAP ASSY




a. Check the appearance.
1. Visually check whether the fuel tank cap and gasket are deformed or damaged.

If necessary, repair or replace the cap and/or gasket.

5. INSPECT VACUUM SWITCHING VALVE ASSY NO.1




a. Check the resistance.
1. Using an ohmmeter, measure the resistance between the terminals.




Standard:

If the resistance is not as specified, replace the VSV.




2. Using an ohmmeter, measure the resistance between the terminal and body.




Standard:




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




2. Apply battery voltage across the terminals.
3. Check that air flow from port E to port F. If operation is not as specified, replace the VSV.

6. INSPECT VACUUM SWITCHING VALVE ASSY NO.1




a. Check the resistance.
1. Using an ohmmeter, measure the resistance between the terminals.




Standard:

If the resistance is not as specified, replace the VSV.




2. Using an ohmmeter, measure the resistance between the terminal and body.




Standard:

If the resistance is not as specified, replace the VSV.




b. Check the operation.
1. Check that air flows from port A to port B.

If the operation is not as specified, replace the VSV.




2. Apply battery voltage across the terminals.
3. Check that air does not flow from port A to port B. If operation is not as specified, replace the VSV.

7. INSPECT HEATED OXYGEN SENSOR




a. Check the resistance. (Bank 1 Sensor 1)
1. Using an ohmmeter, measure the resistance between the terminals.




Standard:

If the result is not as specified, replace the heated oxygen sensor.




b. Check the resistance. (Bank 1 Sensor 2)
1. Using an ohmmeter, measure the resistance between the terminals.




Standard:

If the result is not as specified, replace the heated oxygen sensor.