Emission Control System: Canister: Inspection

If cracks or damage are found, replace the charcoal canister assembly.

Fig 1: Visually Checking Charcoal Canister For Cracks Or Damage

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1. With the purge port closed, blow 1.67 kPa (17.0 gf/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 assembly.
   Fig 2: Checking Air Flows From Air Inlet Port

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. With the vent port closed, blow 1.10 kPa (11.2 gf/cm² , 0.16 psi) air to the air inlet port, and check that air flows from the purge port. If the result is not as specified, replace the charcoal canister assembly.

Fig 3: Checking Air Flows From Purge Port

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the air hose between ports A and B.
2. Connect the pressure gauge to the vent port of the charcoal canister.

   SST 09992-00242 

3. While holding port B, with the purge port and the air inlet port closed and port A open, apply pressurized air 19.6 kPa (0.2 kgf/cm² , 2.81 psi) into the vent port, then confirm that the pressure is retained for 1 minute.

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

Fig 4: Checking For Air Leakage

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

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

   Fig 5: Checking Air Flows From Port A To B And C

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Connect the positive (+) lead 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 charcoal canister assembly.

Fig 6: Checking If Valve Is Closed
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5. Install the detection pump.