Section 112 (Emission Control System (2AZ-FE)): Canister: Inspection

WARNING: This page is about a different car, the 2007 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT CANISTER
1. Visually check the canister for cracks or damage. If cracks or damage is found, replace the canister.
  
  Fig 1: Inspecting Canister For Damage
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check the canister operation.
  1. While holding the purge port closed, blow air 0.39 kPa (4.0 kgf/cm² , 3 mmHg) into the vent port, and check that air flows from the air inlet port.
    If the result is not as specified, replace the canister.
    
    Fig 2: Checking Canister Operation
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. While holding the air inlet port closed, blow air 0.39 kPa (4.0 kgf/cm² , 3 mmHg) into the vent port, and check that air flows from the purge port.
    If the result is not as specified, replace the canister.
    
    Fig 3: Blowing Air Into Vent Port, And Checking Air Flows From Purge Port
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. While holding the air inlet port closed, apply vacuum 3.43 kPa (35.0 kgf/cm² , 25.7 mmHg) to the vent port, and check that air is sucked into the purge port.
    If the result is not as specified, replace the canister.
    
    Fig 4: Applying Vacuum To Vent Port, And Check Air Is Sucked Into Purge Port
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Check the air tightness.
  1. While holding the vent and air inlet ports closed, apply vacuum 3.43 kPa (35.0 kgf/cm² , 25.7 mmHg) to the purge port, and check that the vacuum is maintained for 1 minute.
    If the result is not as specified, replace the canister.
    
    Fig 5: Checking Canister Air Tightness
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Check the diaphragm.
  1. Remove the air hose between ports A and B.
  2. While holding the vent, purge and air inlet ports closed, apply vacuum 1.42 kPa (14.5 kgf/cm² , 10.6 mmHg) to port A, and check that air is not sucked into port B.
    
    Fig 6: Checking Condition Of Diaphragm
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. While holding the vent, purge and air inlet ports closed, apply vacuum 1.42 kPa (14.5 kgf/cm² , 10.6 mmHg) to port A, and measure how long it takes for the vacuum to drop.
    Vacuum drop time: 10 seconds or more
    
    If the result is not as specified, replace the canister.
    
    Fig 7: Measuring Vacuum Drop By Apply Vacuum
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Check the leak detection pump.
  1. Check that air flows from port A to port B and C.
    If the result is not as specified, replace the canister.
    
    Fig 8: Checking Air Flows From Port A To Port B And C
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Connect the positive (+) lead of the battery to terminal 7 and the negative (-) lead to terminal 6.
    
    Fig 9: Connecting Battery To Terminals 6 & 7
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Check that the valve is closed.
    If the result is not as specified, replace the canister.
  4. Install the canister pump module.