2008 Lexus SC 430FACTORY OEM SERVICE PROCEDURE

Throttle Body: Inspection

  1. INSPECT THROTTLE BODY 
    1. Measure the resistance of the throttle position sensor and control motor.

    Standard resistance 

    TESTER CONNECTION SPECIFIED CONDITION CHART

    Tester Connection Condition Specified Condition
    1 (M-) - 2 (M+) 20°C (68°F) 0.3 to 100 Ω

    If the result is not as specified, replace the throttle body.

    Fig 1: Identifying Throttle Control Motor Connector Terminals
    G05184279Courtesy of © 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:

  • • 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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