What is the Throttle Position Sensor and how do you diagnose and replace it on Lexus ES300?

Locate the Throttle Position Sensor (TPS) on the end of the throttle shaft to check it. Verify the reference voltage located on the Powertrain Control Module (PCM). Disconnect the TPS electrical connector and touch the probes of a volt meter to terminal number 1 and ground. With the ignition key turned ON, it should be 4.5 to 5.5 volts. If it is out of range or if there is no reference voltage, have the PCM checked. Next, check the TPS signal voltage. Reconnect the electrical connector to the TPS. Back pin terminals 2 and 3 of the TPS electrical connector. With the ignition key turned to ON and the throttle fully closed, the voltage should read 0.3 to 1.0 volts. Then, slowly open the throttle to increase it. If the indicated readings are below or above the specified range, replace the TPS. To remove it, make sure the ignition key is in the OFF position. Disconnect the electrical connector from the TPS. Remove the screws that retain the TPS to the throttle body and remove the TPS. Installation is the reverse of removal.

Genuine Lexus ES300 Throttle Position Sensor

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4 Throttle Position Sensors found

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Lexus ES300 Sensor, Throttle Position (For E.F.I.)
Part Number: 89452-30150
$90.48 MSRP: $122.36
You Save: $31.88 (27%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Throttle Position Sensor
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2002-2003 Lexus ES300 | 6 Cyl 3.0L | 1MZFE; 1MZFE; MCV30L-BEAGKA
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Lexus ES300 Sensor, Throttle Position (For E.F.I.)
Part Number: 89452-33030
$54.79 MSRP: $72.90
You Save: $18.11 (25%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Throttle Position Sensor
- Replaces: 89452-33040
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 1997-2001 Lexus ES300 | 6 Cyl 3.0L | 1MZFE; 1MZFE; MCV20L-BTPGKA, MCV20L-BTPGKK
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Lexus ES300 Sensor, Throttle Pos
Part Number: 89452-32060
$157.94 MSRP: $215.34
You Save: $57.40 (27%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Sensor, Throttle Position (For E.F.I.); Throttle Position Sensor, Throttle Sensor
- Manufacturer Note: TOYOTA
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 1992-1996 Lexus ES300 | 6 Cyl 3.0L | 1MZFE, 3VZFE; 1MZFE, 3VZFE; MCV10L-BTPGKA, MCV10L-BTPGKK, VCV10L-BTMGKA, VCV10L-BTMGKK, VCV10L-BTPGKA, VCV10L-BTPGKK
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Lexus ES300 Sensor, Throttle Position (For E.F.I.)
Part Number: 89452-33040
$56.98 MSRP: $72.90
You Save: $15.92 (22%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Replaced by: 89452-33030
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 1997-2001 Lexus ES300 | 6 Cyl 3.0L | 1MZFE; 1MZFE; MCV20L-BTPGKA, MCV20L-BTPGKK

Lexus ES300 Throttle Position Sensor

Lexus ES300 TPS is an important part of the car's fuel control mechanism and has incorporated a reputation of durability and efficiency. This sensor is very sensitive to the throttle position to give feedback to times when the fuel air mixture needs to be adjusted for combustion. In the Lexus ES300, TPS interacts almost directly with the fuel injection system, thus providing optimal, coordinated, acceleration, cruising and deceleration and therefore improving efficiency as well as safety. In the case of the Throttle Position Sensor in the Lexus ES300, the latest non-contact mechanisms like Hall effect or magnetoresistive give accurate feedback to the ECU, enhancing the performance of the car's engine. This new and high-quality sensor is compatible with many ES300 models which means many drivers of Lexus ES300 vehicle can enjoy the features that come with this sensor regardless of whether they own the first generation ES300 or the most recent ES300. This therefore goes a long way in supporting the fuel efficiency and performance of the vehicle in general while at the same time supporting the regular servicing of a failing TPS. The Throttle Position Sensor can therefore be said to be unique in the market mainly because of its heavy usage and very complex design. Indeed, the Throttle Position Sensor of Lexus ES300 is a reliable and efficient part that considers as a significant factor of being a part of the luxurious booking of Lexus. Conclusively, the Throttle Position Sensor shows the company's drive to embrace Quality and Innovation in the manufacture of automobiles; a basic aspect of striving for the premier in automobiles.

Should you need to purchase new auto parts for your vehicle, we strongly suggest you consider the genuine Lexus ES300 Throttle Position Sensor available on LexusPartsNow.com. Our OEM Lexus ES300 Throttle Position Sensor come with the reassurance of the manufacturer's warranty, a hassle-free return policy, and speedy delivery service, all at affordable prices online. Feel free to shop with confidence!

Lexus ES300 Throttle Position Sensor Parts Questions & Experts Answers

Sensor, Throttle Position (For E.F.I.)
89452-33030
Q: What is the Throttle Position Sensor and how do you diagnose and replace it on Lexus ES300?
A: Locate the Throttle Position Sensor (TPS) on the end of the throttle shaft to check it. Verify the reference voltage located on the Powertrain Control Module (PCM). Disconnect the TPS electrical connector and touch the probes of a volt meter to terminal number 1 and ground. With the ignition key turned ON, it should be 4.5 to 5.5 volts. If it is out of range or if there is no reference voltage, have the PCM checked. Next, check the TPS signal voltage. Reconnect the electrical connector to the TPS. Back pin terminals 2 and 3 of the TPS electrical connector. With the ignition key turned to ON and the throttle fully closed, the voltage should read 0.3 to 1.0 volts. Then, slowly open the throttle to increase it. If the indicated readings are below or above the specified range, replace the TPS. To remove it, make sure the ignition key is in the OFF position. Disconnect the electrical connector from the TPS. Remove the screws that retain the TPS to the throttle body and remove the TPS. Installation is the reverse of removal.