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.

1997 Lexus ES 300FACTORY OEM SERVICE PROCEDURE

Throttle Position (TP) Sensor

NOTE: Vehicles with Traction Control System (TRAC) are equipped with a main TP sensor and a sub-TP sensor. The following table applies to main TP sensor. For sub-TP sensor table, see SUB-THROTTLE POSITION (SUB-TP) SENSOR.

TP SENSOR RESISTANCE

Application & Throttle Plate Position ⁽¹⁾

TP Sensor ⁽²⁾ Terminals

Ohm Reading

Throttle Fully Closed

VTA & E2

200-5700

Throttle Fully Open

VTA & E2

2000-10,200

All Positions

VC & E2

2500-5900

⁽¹⁾	For terminal identification, see THROTTLE POSITION (TP) SENSOR in ON-VEHICLE ADJUSTMENTS article.

⁽²⁾	Disconnect vacuum hose from throttle opener. Apply vacuum to throttle opener to allow throttle to fully seat.

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.