Throttle valve auto parts sensor for Toyota, Lexus

Throttle valve auto parts sensor for Toyota, Lexus

Description of the product 

OE NO.: 8945230150

Applicable Brand: Toyota, Lexus

Model: non

The main function of the throttle position sensor

Monitor the opening of the throttle valve and transmit this information to the engine control unit (ECU) to help the ECU accurately determine the engine's operating conditions, thereby adjusting the intake and fuel injection quantities.
 

Specifically, the throttle position sensor can detect whether the engine is in idle, load, acceleration, or deceleration conditions, and convert this information into electrical signals to be transmitted to the ECU.

The ECU adjusts the fuel injection and intake quantities based on these signals to ensure efficient operation of the engine under different operating conditions
 

Specific application scenarios and fault manifestations

Idle condition: In the idle state, the idle contact of the throttle position sensor closes and outputs an idle condition signal to the ECU.

After receiving this signal, the ECU will accurately control the fuel injection and intake quantities according to the requirements of idle conditions, maintaining stable and economical idle operation of the engine
 

Acceleration and deceleration conditions: During acceleration, the sensor quickly senses the increase in throttle opening and transmits a signal to the ECU in a timely manner.

The ECU increases the fuel injection amount accordingly, making the engine output stronger power. During deceleration, the sensor detects a decrease in throttle opening, causing the ECU to reduce fuel injection and even implement fuel cut-off control to improve fuel economy
 

Fault manifestation: If the throttle position sensor malfunctions, it may cause problems such as high or low idle, unstable idle, engine shaking during acceleration, and delayed acceleration response
Measurement methods and fault diagnosis
 

The method of measuring the throttle position sensor includes detecting the supply voltage and resistance. The specific steps are as follows:
 

Detecting power supply voltage: Disconnect the connector plug of the throttle position sensor, turn on the ignition switch, and measure the voltage values between VCC and the idle contact, VCC and the throttle fully open contact.
 

Detecting resistance: Unplug the throttle potentiometer plug and measure the resistance values between VCC and idle contact, as well as between VCC and VTH

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