Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2011 Lexus GS 450hFACTORY OEM SERVICE PROCEDURE

Throttle Body: Inspection: Inspection

INSPECT THROTTLE BODY

Measure the resistance between the terminals.

Fig 1: Checking Throttle Body Resistance

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard resistance

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

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

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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.