2008 Lexus GX 470FACTORY OEM SERVICE PROCEDURE

Throttle Body: Inspection

  1. INSPECT THROTTLE WITH MOTOR BODY ASSEMBLY 
    1. Disconnect the throttle control motor connector.
    2. Using an ohmmeter, measure the motor resistance between terminals M+ and M-.

      Motor resistance: 

      0.3 to 100 Ω at 20°C (68°F) 

      Fig 1: Inspecting Throttle With Motor Body Assembly
      G04968225Courtesy 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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