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Home >> Lexus >> 2008 >> GS 460 >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (1UR-FSE) - Diagnostic Codes (3 Of 4) >> DTC P0607 Control Module Performance >> Inspection Procedure
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Inspection Procedure

  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: Fuel-Trim And HO2 Sensor Voltage Graph
    G05386759Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream ON.
    4. Start the engine and warm it up.
    5. Allow the engine to idle.
    6. Select the following menu items: Powertrain/Engine 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 CHART

      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 the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream ON.
    4. Clear DTC (See DTC CHECK/CLEAR ).
    5. Turn the engine switch to OFF and turn the Techstream OFF.
    6. Disconnect the Techstream.
    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 Techstream to the DLC3.
    10. Turn the engine switch on (IG).
    11. Turn the Techstream ON.
    12. Start the engine.
      Fig 2: Engine Coolant Temperature Driving Pattern
      G05803844Courtesy 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/Trouble Codes.
    15. Read DTCs.

      Result 

      RESULT CHART

      Result 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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