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Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota FJ Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FOR EXHAUST GAS LEAK 
    1. Allow the engine to idle.
    2. Check for exhaust gas leak around the HO2 sensor.

      OK: No leak from the HO2 sensor. 

    NG: REPAIR OR REPLACE EXHAUST GAS LEAK POINT 

    OK: Go to Next Step 

  2. INSPECT HEATED OXYGEN SENSOR 
    Fig 1: Identifying Fuel-Trim And Rear Heated Oxygen Sensor Voltage Cross-Reference Chart
    G05386759Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Connect a Techstream to the DLC3.
    2. Turn the ignition switch ON.
    3. Turn the tester ON.
    4. Start the engine and warm it up.
    5. Allow the engine to idle.
    6. Select the following menu items: Powertrain / Engine and ECT Active Test / Control the Injection Volume for A/ F Sensor.
    7. Check the O2S B1S2 values when the Control the Injection Volume for A/F Sensor is -12.5% (Lean fuel-trim).
    8. Check the O2S B1S2 values when the Control the Injection Volume for A/F Sensor is 25% (Rich fuel-trim).

      Standard Voltage 

      STANDARD VOLTAGE

      Control the Injection Volume for A/F Sensor O2S B1S2
      -12.5% Less than 0.2 V
      25% More than 0.8 V

    NG: REPLACE HEATED OXYGEN SENSOR  (See REMOVAL )

    OK: Go to Next Step 

  3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0607) 
    1. Connect a Techstream to the DLC3.
    2. Turn the ignition switch ON.
    3. Turn the tester ON.
    4. Clear DTC (See DTC CHECK/CLEAR  ).
    5. Turn the ignition switch OFF and turn the tester OFF.
    6. Disconnect the tester.
    7. Disconnect the cable from the battery negative (-) terminal and wait for 1 minute.
    8. Connect the cable to the battery negative (-) terminal,
    9. Connect the tester to the DLC3.
    10. Turn the ignition switch ON.
    11. Turn the tester ON.
    12. Start the engine.
      Fig 2: Identifying Engine Coolant Temperature - Driving Pattern
      G05577406Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    13. Perform the drive pattern.
      1. Warm up the engine.
      2. Accelerate the vehicle until 50 mph (80 km/h) and stop the vehicle.
      3. Drive the vehicle by 35 to 50 mph (60 to 80 km/h) for 5 minutes or more.
    14. Select the following menu items: Powertrain / Engine and ECT / Trouble Codes.
    15. Read DTCs.

      Result 

      RESULT REFERENCE

      Display (DTC Output) Proceed To
      No output A
      P0607 B

    B: REPLACE ECM  (See REMOVAL  )

    A: CHECK FOR INTERMITTENT PROBLEMS  (See CHECK FOR INTERMITTENT PROBLEMS  )

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