Evaporative Emission Control Canister: Testing and Inspection

INSPECTION

1. INSPECT CANISTER




a. Visually check the canister for cracks or damage.

If cracks or damage are found, replace the canister.




b. Check the canister operation.
1. With the purge port closed, blow 1.10 kPa (11.2 kgf/sq.cm 0.16 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, blow 1.10 kPa (11.2 kgf/sq.cm 0.16 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 for air leakage.
1. With the purge port and air inlet port closed, apply 19.6 kPa (0.2 kgf/sq.cm, 2.81 psi) of pressurized air into the vent port, then confirm that pressure is retained for 1 minute.

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




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

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