Evaporative Emission Control Canister: Testing and Inspection

2AZ-FE EMISSION CONTROL: CANISTER (for 4WD): INSPECTION

INSPECTION

1. INSPECT CHARCOAL CANISTER ASSEMBLY





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




(1) With the purge port closed, blow 1.67 kPa (0.02 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 (0.01 kgf/cm2, 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 charcoal canister.





(c) Check for air leak.
(1) Remove the air hose between ports A and B.
(2) Connect the pressure gauge to the vent port of the charcoal canister.
(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.
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If the result is not as specified, replace the charcoal canister.