2009 Toyota Avalon LimitedFACTORY OEM SERVICE PROCEDURE

Inspection Procedure

  1. INSPECT ANY OTHER DTCS OUTPUT 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the tester on.
    4. Enter the following menus: Power train/Engine and ECT/Trouble Codes.
    5. Read the DTCs.

      Result 

      RESULT CHART

      Result Proceed to
      DTC P0607 and P0136, P0137, P0138, P0156, P0157 or P0158 are output A
      DTC P0607 is output B

      B: Go to step  3

      A: Go to Next Step 

  2. INSPECT DTC (P0136, P0137, P0138, P0156, P0157 OR P0158) 
    1. Inspect the P0136, P0137, P0138, P0156, P0157 or P0158 flow chart.

      HINT:

  3. CHECK FOR EXHAUST GAS LEAK 
    1. Allow the engine to idle and rev the engine.
    2. Check for exhaust gas leaks around the heated oxygen sensor.

      If any exhaust gas leaks are present, repair it and proceed to step 4. If no exhaust gas leaks present proceed to step 4.

      • If no exhaust gas leaks are present, a malfunction in the heated oxygen sensor circuit is suspected.
      • If any exhaust gas leaks are present around the heated oxygen sensor, noise appears in the output voltage of the heated oxygen sensor.
  4. PERFORM CONFIRMATION DRIVING PATTERN 
    1. Clear the DTC (See DTC CHECK/CLEAR  ).
    2. Connect the Techstream to the DLC3.
    3. Warm up the engine until the engine coolant temperature becomes 75° (167°F) or more.
    4. Perform the driving pattern.
      Fig 1: Monitoring Driving Pattern For P0606
      G06227069Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Enter the following menus: Powertrain/Engine and ECT/Trouble Codes.
    6. Read the DTCs.

      Result 

      RESULT CHART

      Result Proceed to
      DTC P0607 and P0136, P0137, P0138, P0156, P0157 or P0158 are output A
      DTC P0607 is output B
      DTC is not output C

      B: REPLACE ECM (See  REMOVAL   ) 

      C: Go to step  6

      A: Go to Next Step 

  5. INSPECT DTC (P0136, P0137, P0138, P0156, P0157 OR P0158) 
    1. Inspect the P0136, P0137, P0138, P0156, P0157 or P0158 flow chart.

      HINT:

  6. INSPECT ECM 
    1. Clear the DTC (See DTC CHECK/CLEAR  ).
    2. Stop the engine and wait for 30 minutes.
    3. Connect the Techstream to the DLC3.
    4. Start engine and allow it to idle for 2 minutes.
    5. Turn the tester on.
    6. Enter the following menus: Powertrain/Engine and ECT/Trouble Codes.
    7. Read the DTCs.

      Result 

      RESULT CHART

      Result Proceed to
      DTC is not output A
      DTC P0607 is output B

      B: REPLACE ECM (See  REMOVAL   ) 

      A: END 

Chapter Navigation
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.