2009 Lexus LS 460L AWDFACTORY OEM SERVICE PROCEDURE

Inspection Procedure

NOTE: The Techstream is required to conduct the following diagnostic troubleshooting procedure.

HINT:

  • Using the Techstream monitor results enables the EVAP (Evaporative Emission) system to be confirmed.
  • Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
  1. CONFIRM DTCΒ 
    1. Turn the engine switch off and wait for 10 seconds.
    2. Turn the engine switch on (IG).
    3. Turn the engine switch off and wait for 10 seconds.
    4. Connect the Techstream to the DLC3.
    5. Turn the engine switch on (IG) and turn the Techstream ON.
    6. Enter the following menus: Powertrain/Engine/Trouble Codes.
    7. Confirm DTCs and freeze frame data.

      If any EVAP system DTCs are set, the malfunctioning area can be determined using the table below.

      Fig 1: Malfunction Chart
      G06190059Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002
Factory Service Tools

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When to See a Mechanic

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

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

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