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Home >> Lexus >> 2008 >> LX 570 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTC P0455 - P0657 >> DTC P0607 Control Module Performance >> Inspection Procedure

Inspection Procedure

  1. CHECK FOR EXHAUST GAS LEAK 
    1. Allow the engine to idle.
    2. Check for exhaust gas leak around the HO2S.

      OK: No leak from the HO2S. 

    NG: REPAIR LEAK 

    OK: Go to next step 

  2. CHECK HEATED OXYGEN SENSOR 
    Fig 1: Fuel Trim And Rear HO2S Voltage Cross-Reference Graph
    G05149424Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Warm up the engine.
    2. Allow the engine to idle.
    3. Enter the following menus: Powertrain / Engine and ECT Active Test / Control the Injection Volume for A/F Sensor.
    4. Check the O2S B1S2 (O2S B2S2) values when the Control the Injection Volume for A/F Sensor is -12.5% (Lean fuel-trim).
    5. Check the O2S B1S2 (O2S B2S2) values when the Control the Injection Volume for A/F Sensor is 25% (Rich fuel-trim).

    Standard 

    ACTIVE TEST

    Control the Injection Volume O2S B1S2 (O2S B2S2)
    -12.5% Below 0.2 V
    25% Higher than 0.8 V

    NG: REPLACE HEATED OXYGEN SENSOR  (See REMOVAL )

    OK: Go to next step 

  3. CHECK DTC 
    1. Clear DTC (See DTC CHECK/CLEAR ).
    2. Turn the engine switch off.
    3. Disconnect the cable from the negative (-) battery terminal and wait for 1 minute.
    4. Connect the cable to the negative (-) battery terminal.
    5. Start the engine.
      Fig 2: Monitor Driving Pattern
      G05628038Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Perform the drive pattern.
      1. Warm up the engine.
      2. Accelerate the vehicle until 80 km/h (50 mph) and stop the vehicle.
      3. Drive the vehicle by 60 to 80 km/h (35 to 50 mph) for 5 minutes or more.
    7. Check DTC.

      OK: P0607 is not output. 

    NG: REPLACE ECM  (See ECM )

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

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