Evaporative Emission Control Canister: Testing and Inspection

1. REMOVE CHARCOAL CANISTER.
- Disconnect the following hoses:
- Vacuum hose from Vacuum Switching Valve (VSV) from charcoal canister
- EVAP hose from charcoal canister





- Disconnect the grommet on the check valve from the bracket, and remove the charcoal canister.
- Remove the check valve from the hose end on the charcoal canister.





2. VISUALLY INSPECT CHARCOAL CANISTER.
- Look for cracks or damage.





3. CHECK FOR CLOGGED FILTER AND STUCK CHECK VALVE.
- Using low pressure compressed air (4.71 kPa (48 kgf/ cm2, 0.68 psi)), blow into port A and check that air flows without resistance from the other ports.





- Blow low pressure compressed air (4.71 kPa (48 kgf/ cm2, 0.68 psi)) into port B. and check that air does not flow from the other ports.
- If operation is not as specified, replace the charcoal canister.





4. CLEAN FILTER IN CANISTER.
- Clean the filter by blowing 294 kPa (3 kgf/cm2, 43 psi) of compressed air into port A while holding port B closed.

NOTICE:
- Do not attempt to wash the canister.
- No activated carbon should come out.

5. REINSTALL CHARCOAL CANISTER.

HINT: Install the check valve with black port facing the charcoal canister side.

- Install the check valve to the hose end on the charcoal canister.
- Install the charcoal canister.
- Install the grommet on the check valve to the bracket.
- Vacuum hose (from VSV) to charcoal canister
- EVAP hose to charcoal canister.