2011 Toyota PriusFACTORY OEM SERVICE PROCEDURE

Emission Control System (Service Information): Canister: Inspection: Inspection

  1. INSPECT CHARCOAL CANISTER ASSEMBLY 
    1. Visually check the charcoal canister assembly.
      1. Visually check the charcoal canister for cracks or damage.
        Fig 1: Identifying Charcoal Canister Assembly
        GTY230606Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

    2. Check canister operation.
      1. With the purge port closed, blow 5 kPa (0.1 kgf/cm2 , 0.7 psi) of air into the vent port, and check that air flows from the air inlet port.
        Fig 2: Identifying Purge Port
        GTY224391Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 Vent Port
        *2 Air
        *3 Air Inlet Port
        *4 Purge Port

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

      2. With the vent port closed, blow 5 kPa (0.1 kgf/cm2 , 0.7 psi) of air into the air inlet port, and check that air flows from the purge port.
        Fig 3: Identifying Vent Port
        GTY228943Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 Purge Port
        *2 Air Inlet Port
        *3 Vent Port
        *4 Air

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

    3. Check for air leaks.
      1. Connect a pressure gauge to the vent port of the charcoal canister.
        Fig 4: Connecting Pressure Gauge To Vent Port Of Charcoal Canister
        GTY215339Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 Purge Port
        *2 Air Inlet Port
        *3 Vent Port
        *4 Pressure Gauge
      2. With the purge port and the air inlet port closed, apply 20 kPa (150 mmHg, 5.91 in.Hg) 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.

    4. Check the leak detection pump.
      1. Connect a positive (+) lead of the battery to terminal 5 and a negative (-) lead to terminal 1.
        Fig 5: Connecting Positive Lead Of Battery To Terminal 5 & Negative Lead To Terminal 1
        GTY236646Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Check that a clicking sound is heard from the leak detection pump.

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

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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