Evaporative Emission Control Canister: Testing and Inspection

1. REMOVE CHARCOAL CANISTER:





- Disconnect the following hoses from the charcoal canister:
- Vacuum hose (from VSV)
- EVAP hose
- 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, blow into port A and check that air flows without resistance from the other ports.





- Blow 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 side.
- Install the charcoal canister.
- Install the grommet on the check valve to the bracket.
- Connect the following hoses to the charcoal canister:
- Vacuum hose (from VSV)
- EVAP hose