2007 Lexus GS 430FACTORY OEM SERVICE PROCEDURE

Throttle Body: Inspection

  1. INSPECT THROTTLE BODY 
    1. Measure the resistance of the throttle position sensor and control motor.
    TESTER CONNECTION SPECIFIED CONDITION

    Tester Connection Condition Specified Condition
    2 (M+) - 1 (M-) 20°C (68°F) 0.3 to 100 Ω
    5 (VC) - 3 (E2) 20°C (68°F) 1.2 to 3.2 kΩ

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

    Fig 1: Identifying Throttle Body Connector Terminals
    G05285797Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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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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