EMISSION CONTROL SYSTEM > ON-VEHICLE INSPECTION

for Preparation Click here



1. INSPECT AIR FUEL RATIO COMPENSATION SYSTEM


    A103658E37

  1. Measure the voltage between the terminals of the hybrid vehicle control ECU connectors.

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    H33 - 22 (A1A+) to H34 - 28 (E2)
    		Ignition switch ON
    		3.3 V
    H33 - 30 (A1A-) to H34 - 28 (E2)
    		Ignition switch ON
    		3.0 V
    H33 - 23 (A2A+) to H34 - 28 (E2)
    		Ignition switch ON
    		3.3 V
    H33 - 31 (A2A-) to H34 - 28 (E2)
    		Ignition switch ON
    		3.0 V

    NOTICE:
    Connect test leads to the connector's back side. The connectors should not be disconnected from the hybrid vehicle control ECU.

    HINT:
    Voltage of the hybrid vehicle control ECU is kept constant regardless of the voltage of the air fuel ratio sensor.

  1. Connect the intelligent tester to the DLC3.

  1. Select "Data List". Then select "AFS B1 S1", "AFS B2 S1", "O2S B1 S2" and "O2S B2 S2" to display the monitors.

  1. Warm up the air fuel ratio sensor with the engine speed at 2,500 rpm for approximately 2 minutes.



    A115009E01

  1. Maintain the engine speed at 2,500 rpm and confirm that the displays of "AFS B1 S1" and "AFS B2 S1" are as shown in the illustration.

    HINT:
    1. The illustration may differ slightly from the display on the intelligent tester.
    2. Only the intelligent tester displays the waveform of the air fuel ratio sensor.

  1. Confirm that the display of "O2S B1 S2" and "O2S B2 S2" changes between 0 and 1 V with the engine speed at 2,500 rpm.



2. INSPECT FUEL CUT OFF / RESTART RPM

  1. Increase the engine speed to at least 3,500 rpm.

  1. Use a sound scope to check for injector operating sounds.

  1. Check that when the throttle lever is released, injector operation sound stops momentarily (at 2,500 rpm) and then resumes (at 1,200 rpm).

    Standard:
    Item
    		Specified Condition
    Fuel cut off rpm
    		2,500 rpm
    Fuel injector restart rpm
    		1,400 rpm



3. VISUALLY INSPECT HOSE, CONNECTIONS AND GASKETS


    P012931

  1. Check for cracks, leaks or damage.

    HINT:
    Separation of the engine oil dipstick, oil filler cap, PCV hose, etc. may causes the engine to run improperly. Disconnection, looseness or cracks in the parts of the air induction system between the throttle body and cylinder head will allow air suction and cause the engine to run improperly.



4. INSPECT EVAP SYSTEM LINE


  1. PERFORM ACTIVE TEST



      E109221E03

    1. Put the engine in inspection mode (Click here)

    2. Connect the intelligent tester to the DLC3.

    3. Start the engine.

    4. Turn the tester ON.



      5. A116277

    5. Disconnect the fuel vapor feed hose.

    6. Enter the following menus : Power train / Engine / Active Test.

    7. Check that a vacuum occurs at the VSV port.

    8. Finish Active test, then connect the vacuum hose.



  1. READ DATA LIST



      E109221E03

    1. Put the engine in inspection mode (Click here)

    2. Warm up the engine.

    3. Turn the ignition switch OFF.

    4. Connect the intelligent tester to the DLC3.

    5. Start the engine.

    6. Turn the tester ON.

    7. Enter the following menus : Power train / Engine / Data List.

    8. Check the values by referring to the table below.

      Intelligent Tester Display
      		Measurement: Range (Display)
      		Diagnostic Note
      EVAP Purge VSV
      EVAP (Purge) VSV
      		VSV status for EVAP control: ON or OFF
      		Active Test support data