2012 Lexus LS 460 AWDFACTORY OEM SERVICE PROCEDURE

DTC P0607: Control Module Performance: Procedure

  1. CHECK ANY OTHER DTCS OUTPUT 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine / Trouble Codes.
    5. Read the DTCs. Refer to DTC CHECK / CLEAR .

      Result

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

    B → See 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 flowchart.

      HINT: 

    NEXT → See step   6 

  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 "PERFORM CONFIRMATION DRIVING". If no exhaust gas leaks are present, proceed to "PERFORM CONFIRMATION DRIVING".

      HINT: 

      • 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.

    NEXT: Go to next step 

  4. PERFORM CONFIRMATION DRIVING PATTERN 
    Fig 1: Confirmation Driving Pattern
    GTY258010Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Clear the DTC. Refer to DTC CHECK / CLEAR .
    2. Connect the Techstream to the DLC3.
    3. Start the engine.
    4. Turn the Techstream on.
    5. Warm up the engine until the engine coolant temperature becomes 75°C (167°F) or more.
    6. Perform the driving pattern.
      1. Accelerate the vehicle until 50 mph (80 km/h) and stop the vehicle.
      2. Drive the vehicle by 37 to 50 mph (60 to 80 km/h) for 5 minutes or more.
    7. Enter the following menus: Powertrain / Engine / Trouble Codes.
    8. Read the DTCs.

      Result

      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 → See step   7 

    C → See 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 flowchart.

      HINT: 

    NEXT: Go to next step 

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

      Result

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

    B → See step   7 

    A → END 

  7. REPLACE ECM. Refer to  REMOVAL 
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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.

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