Evaporative Emission Control Canister: Testing and Inspection

1AR-FE EMISSION CONTROL: CANISTER: INSPECTION

INSPECTION

1. INSPECT CHARCOAL CANISTER ASSEMBLY





(a) Visually check the charcoal canister for cracks or damage.
If cracks or damage is found, replace the charcoal canister.
(b) Check canister operation.





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(1) With the purge port closed, blow 1.67 kPa (0.017 kgf/cm2, 0.24 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 charcoal canister.




(2) With the vent port closed, blow 1.10 kPa (0.011 kgf/cm2, 0.16 psi) of air into the air inlet port, and check that air flows from the purge port.

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If the result is not as specified, replace the charcoal canister.
(c) Check for air leaks.
(1) Remove the air hose between ports A and B.




(2) Connect a pressure gauge to the vent port of the charcoal canister.

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(3) While holding port B, with the purge port and the air inlet port closed and port A open, apply 19.6 kPa (0.2 kgf/cm2, 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.
(d) Check the leak detection pump.
(1) Remove the canister pump module.




(2) Check that air flows from port A to port B and C.

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




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