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Home >> Toyota >> 2008 >> Yaris Base, 2D Hatchback, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control System (1NZ-FE) >> SFI System >> DTC P0606 ECM / PCM Processor >> Inspection Procedure

Inspection Procedure

  1. CHECK FOR EXHAUST GAS LEAK 
    1. Allow the engine to idle.
    2. Check for an exhaust gas leak around the HO2 sensor.

      OK: No exhaust gas leak from the HO2 sensor. 

    NG: REPAIR EXHAUST GAS LEAK POINT 

    OK: Go to Next Step 

  2. INSPECT HEATED OXYGEN SENSOR 
    Fig 1: Fuel Trim And Rear Heated Oxygen Sensor Voltage Cross-Reference
    G05590642Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Connect a Techstream to the DLC3.
    2. Turn the ignition switch to 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 

      VOLTAGE SPECIFICATION

      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 P0606) 
    1. Connect a Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the tester ON.
    4. Clear DTC (See DTC CHECK/CLEAR  ).
    5. Turn the ignition switch to 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 to ON.
    11. Turn the tester ON.
    12. Start the engine.
      Fig 2: Monitor Drive Pattern For Engine Coolant Temperature
      G05590643Courtesy 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 at 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 CHART

      Display (DTC Output) Proceed To
      No output A
      P0606 B

    B: REPLACE ECM (See  REMOVAL   ) 

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

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