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On-Vehicle Inspection [08/2013 - ]: Procedure

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  1. INSPECT FUEL CUT OPERATION 
    1. Start the engine.
    2. Warm up the engine.
    3. Increase the engine speed to approximately 3500 rpm.
    4. Use a sound scope to check for fuel injector assembly operating sounds.
      GTY425964Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Fuel Injector Assembly
      *a Sound Scope
    5. When the accelerator pedal is released, check that fuel injector assembly operating sounds stop momentarily and then resume.

      Standard

      Item Specified Condition
      Fuel injection restart engine speed 1200 rpm

      If the result is not as specified, check the fuel injector assemblies, wiring and ECM.

  2. VISUALLY INSPECT HOSES, CONNECTIONS AND GASKETS 
    1. Inspect the hoses and gaskets for scratches, cracks or air/oil leaks from the connecting parts.

      HINT: 

      If the hoses or gaskets are damaged or some of the connections are loose, they may cause an engine stall or malfunction.

  3. INSPECT EVAPORATIVE EMISSION CONTROL SYSTEM 
    1. Start the engine.
      GTY433160Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the No. 1 fuel vapor feed hose from the purge valve (purge VSV).
    3. Connect the Techstream to the DLC3.
    4. Enter the following menus: Powertrain / Engine / Active Test / Activate the VSV for EVAP Control.

      Powertrain > Engine > Active Test 

      Tester Display
      Activate the VSV for EVAP Control
    5. Check that vacuum occurs at the purge valve (purge VSV) port.
    6. If vacuum does not occur, check the following items.
    7. Exit Active Test mode and reconnect the No. 1 fuel vapor feed hose.

      If the result is not as specified, replace the purge valve (purge VSV), wire harness or ECM.

    8. Enter the following menus: Powertrain / Engine / Data List / EVAP (Purge) VSV.

      Powertrain > Engine > Data List 

      Tester Display
      EVAP (Purge) VSV
    9. Warm up the engine and drive the vehicle.
    10. Confirm that the purge valve (purge VSV) opens.

      If the result is not as specified, replace the purge valve (purge VSV), wire harness or ECM.

  4. CHECK FUEL TANK AND VENT LINE 
    1. Disconnect the vent line hose from the canister (charcoal canister assembly).
    2. Connect a pressure gauge to the vent line hose.
      GTY445305Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Fuel Tank Cap Assembly *2 Vent Line Hose
      *a Pressure Gauge - -
    3. Apply 4 kPa (0.04 kgf/cm2 , 0.6 psi) of pressure to the vent line of the fuel tank assembly.

      HINT: 

      Perform this inspection with the fuel tank assembly less than 90% full. When the fuel tank assembly is full, the fuel fill check valve closes and the pressure is released through the 2 mm (0.0787 in.)orifice. As a result, when the fuel tank cap assembly is removed, the pressure does not decrease smoothly.

    4. Check that the fuel tank assembly pressure is maintained for some time and does not decrease immediately.

      HINT: 

      If the pressure decreases immediately, one of the following may apply:

      • The fuel tank cap assembly is not completely tightened.
      • The fuel tank cap assembly is damaged.
      • Air is leaking from the vent line.
      • The fuel tank assembly is damaged.
    5. When the fuel tank cap assembly is removed, check that the pressure is released smoothly.

      If the pressure is not released smoothly, replace the fuel tank assembly.

    6. Reconnect the vent line hose to the canister (charcoal canister assembly).
  5. INSPECT AIR LINE 
    1. Disconnect the air line tube from the leak detection pump sub-assembly.
      GTY454425Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Air Line Tube
      *a Air
    2. Check that air flows freely into the air line.

      If air does not flow freely into the air line, repair or replace the air line tube.

    3. Reconnect the air line tube to the leak detection pump sub-assembly.
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