2008 Lexus SC 430FACTORY OEM SERVICE PROCEDURE

On-Vehicle Inspection

  1. CHECK ACCELERATOR PEDAL ROD 
    1. Turn the ignition switch OFF.
    2. Connect Techstream to the DLC3.
    3. Turn the ignition switch ON.
    4. Turn the tester ON.
    5. Enter the following menus:

      Select: Powertrain / Engine and ECT / Data List / Accelerator Position No. 1 or Accelerator position No. 2.

    6. Operate the accelerator pedal, then check that the Accelerator position No. 1 and Accelerator position No. 2 values are within the specifications.

    Standard accelerator position No. 1 

    ACCELERATOR PEDAL CONDITION CHART

    Accelerator Pedal Condition Specified Condition
    Released 0.5 to 1.1 V
    Depressed 2.6 to 4.5 V

    Standard accelerator position No. 2 

    ACCELERATOR PEDAL CONDITION CHART

    Accelerator Pedal Condition Specified Condition
    Released 1.2 to 2.0 V
    Depressed 3.4 to 5.0 V

    If the Techstream is not available, measure the voltage between the terminals (VPA - EPA, VPA2 -EPA2) of the ECM connector (See TERMINALS OF ECM ).

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:

  • • 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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