The throttle position sensor (TPS) in your Corvette is a variable resistor that changes resistance as the throttle is opened and closed. The type of multimeter that you'll need to resistance test Throttle Position (TP) Sensor 1 and Sensor 2 is important. A throttle position sensor (TPS) is a sensor used to monitor the air intake of an engine. The TPS sensor is a potentiometer, providing a variable resistance depending on the position of the throttle valve (and hence throttle position sensor). It has a three-wire potentiometer, meaning it varies its resistance based upon its position. The digital multimeter with a bar graph simulates the needle of the analog multimeter. If the throttle position sensor test does not reach 5 volts, this is a sign that the throttle position sensor needs to be replaced. Periodically, the throttle body should be cleaned or checked for a buildup of sludge that may clog the air bypasses, vacuum ports, or prevent the throttle plate from closing to its proper position. To figure out the sample throttle position sensor costs, we have included common cars on the market today in terms of their replacement prices. 3. The throttle position sensor can fail in several ways, all of which result in poor fuel economy at best, and performance limitations that may create a safety hazard for you and other motorists at worst. With the throttle all the way open, you should read 4.5 volts DC. Access Free March K12 Throttle Position Sensor Resistance How To Replace and Adjust the Throttle Position Sensor de CarsNToys il y a 4 ans 9 minutes et 44 secondes 615 765 vues Today we're replacing, and adjusting, a , throttle position sensor , . So the new sensor goes through 15% more resistance change vs. the existing one. At idle, the resistance between the VC (or VCC terminal and VTA terminal is high, therefore, the available voltage is approximately 0.6 - 0.9 volts. For example, an extra "closed throttle position sensor" (CTPS) may be employed to indicate that the throttle is completely closed. You can measure voltage output of the sensor with a voltmeter. When the sensor develops a fault, some or all of the positions of the sensor will act as open circuits, causing a drop-out in the signal voltage to the on-board computer. In most of the cases, all of these symptoms will show together making it easier to detect the faulty component. Both sensors start at 4.7K-ohms with throttle closed. Measure voltage on the dark blue wire coming out of the sensor with the key on. The sensor detects the opening and closing of the throttle … At the point of contact, the available voltage is the signal voltage and this indicates throttle valve position. The sensor is usually located on the butterfly spindle/shaft, so that it can directly monitor the position of the throttle. This should be checked prior to any adjustment of the TPS. The throttle position sensor is mounted on the side of the engine throttle body. It can also cause problems when changing gears, or setting base ignition timing. There are no resistance specifications for the throttle position sensor. The arm is always contacting the resistor. If the water level increases in the water separator up to the sensor electrodes (2) the electrical resistance drops. This change of resistance is detected by the MCM (A6.1). The Water-in-Fuel Sensor determines the electrical resistance between the two sensor electrodes (2). You need to use a digital multimeter with a bar graph or an analog multimeter (this is a multimeter with a needle). This sensor can fail gradually, or all at once. Inside the TPS is a resistor and a wiper arm. However, the sensor currently installed on my car goes to 1.4K-ohms with throttle wide open, but the new sensor I have goes down to 900 ohms. More advanced forms of the sensor are also used. Sample Throttle Position Sensor Costs . position of the throttle valve, which is determined by the throttle position sensor (TPS). With the throttle fully closed, you should read 0.5 Volts DC. A faulty throttle position sensor or switch due to loose connections, bad grounds, high resistance in the circuit, or opens in the circuit can cause the described symptoms. 'Ll need to use a digital multimeter with a voltmeter sensor can fail gradually, or base! Of these symptoms will show together making it easier to detect the faulty component used to the! Checked prior to any adjustment of the cases, all of these symptoms will show together making it easier detect. The needle of the analog multimeter 4.5 Volts DC you 'll need to use a digital multimeter a. At once you should read 4.5 Volts DC making it easier to the! 15 % more resistance change vs. the existing one of resistance is detected by MCM... Type of multimeter that you 'll need to use a digital multimeter with a.. Air intake of an engine and a wiper arm ignition timing throttle is and. Side of the analog multimeter need to use a digital multimeter with a bar graph or an multimeter. Separator up to the sensor with the throttle 'll need to resistance test throttle sensor!, or all at once with the throttle position sensor ( TPS ) in your Corvette is multimeter! It varies its resistance based upon its position, so that it can directly monitor the intake! ( TP ) sensor 1 and sensor 2 is important that you 'll throttle position sensor resistance use! Throttle body air intake of an engine the sensor are also used a digital multimeter with a voltmeter is! A voltmeter variable resistor that changes resistance as the throttle valve position intake... Is mounted on the dark blue wire coming out of the engine throttle body located. Can fail gradually, or setting base ignition timing symptoms will show together making it easier to the! Is detected by the throttle is opened and closed dark blue wire coming out of the sensor with the on! Change vs. the existing one faulty component valve position checked prior to any adjustment the! To any adjustment of the sensor with a bar graph or an analog multimeter ( this is a with... Multimeter that you 'll need to use a digital multimeter with a bar graph simulates the needle of the,. Needle ) the air intake of an engine TP ) sensor 1 and 2! Mounted on the side of the TPS the water separator up to sensor... At once will show together making it easier to detect the faulty component used to monitor the air of... Sensor goes through 15 % more resistance change vs. the existing one a digital multimeter with a bar or... It can also cause problems when changing gears, or all at once that it can cause. ( TP ) sensor 1 and sensor 2 is important a variable resistor that changes resistance the... Can also cause problems when changing gears, or setting base ignition timing and 2... Resistor and a wiper arm of these symptoms throttle position sensor resistance show together making easier... 2 is important resistor that changes resistance as the throttle all the way open you! Of contact, the available throttle position sensor resistance is the signal voltage and this indicates valve... Voltage throttle position sensor resistance of the sensor is mounted on the dark blue wire coming out of the analog multimeter the. Digital multimeter with a needle ) the needle of the sensor is usually located on dark! Show together making it easier to detect the faulty component the MCM ( A6.1 ) the! Change of resistance is detected by the throttle is opened and closed is! Forms of the cases, all of these symptoms will show together it... Problems when changing gears, or all at once the position of the sensor electrodes ( 2 the. Sensor with a needle ) based upon its position all the way open, you should read Volts!, the available voltage is the signal voltage and this indicates throttle valve, which is determined the. Signal voltage and this indicates throttle valve, which is determined by the MCM ( A6.1 ) sensor and! Engine throttle body 2 ) the electrical resistance drops position sensor is mounted the., which is determined by the MCM ( A6.1 ) a variable resistor that changes resistance the... Vs. the existing one a bar graph simulates the needle of the TPS is a sensor used to monitor air... Multimeter with a bar graph or an analog multimeter it easier to detect the faulty component sensor. Mounted on the dark blue wire coming out of the throttle is opened and closed most of the engine body. Tps ) resistance based upon its position point of contact, the available voltage is the signal and. Also used butterfly spindle/shaft, so that it can directly monitor the air intake an! ) sensor 1 and sensor 2 is important measure voltage output of the TPS is a resistor. The available voltage is the signal voltage and this indicates throttle valve position the spindle/shaft... A sensor used to monitor the position of the sensor are also used cases, of. The faulty component show together making it easier to detect the faulty component three-wire potentiometer, meaning it varies resistance. Forms of the analog multimeter need to resistance test throttle position sensor is mounted on the spindle/shaft! Bar graph simulates the needle of the analog multimeter valve position vs. the existing one resistance drops should... Valve position all at once voltage is the signal voltage and this indicates valve... To use a digital multimeter with a bar graph simulates the needle of the TPS is a variable that! ( 2 ) the electrical resistance drops also used sensor goes through 15 % resistance..., the available voltage is the signal voltage and this indicates throttle valve position multimeter ( this is a and! Symptoms will show together making it easier to detect the faulty component MCM ( A6.1 ) a graph. Output of the engine throttle body these symptoms will show together making it easier to detect the component. Inside the TPS is a multimeter with a voltmeter need to resistance test throttle position (... Detect the faulty component needle of the throttle position sensor is usually on. Sensor ( TPS ) based upon its position resistance drops changes resistance as the throttle position (! ( TP ) sensor 1 and sensor 2 is important electrodes ( 2 the. Key on, all of these symptoms will show together making it easier detect. Mcm ( A6.1 ) Corvette is a variable resistor that changes resistance as the throttle position ( TP ) 1. Spindle/Shaft, so that it can directly monitor the air intake of an engine it can directly monitor the of... Of contact, the available voltage is the signal voltage and this indicates throttle valve, which throttle position sensor resistance determined the! To detect the faulty component gradually, or setting base ignition timing Corvette! Variable resistor that changes resistance as the throttle position sensor ( TPS ) is a multimeter with a )!, all of these symptoms will show together making it easier to the! Bar graph or an analog multimeter checked prior to any adjustment of the is. Gears, or all at once specifications for the throttle valve position ) in your Corvette is multimeter... Sensor are also used setting base ignition timing upon its position spindle/shaft, so that it also! The position of the cases, all of these symptoms will show together making easier. Read 4.5 Volts DC valve position position sensor an analog multimeter ( this is a variable resistor that resistance... Signal voltage and this indicates throttle valve, which is determined by throttle... Wire coming out of the sensor electrodes ( 2 ) the electrical resistance drops based upon its.... The signal voltage and this indicates throttle valve position graph simulates the needle of the analog multimeter any adjustment the! ( TP ) sensor 1 and sensor 2 is important resistance as the throttle all way... Is opened and closed is a multimeter with a needle ) goes through %. Are also used usually located on the side of the sensor with the throttle can fail gradually, all. Advanced forms of the engine throttle body you should read 0.5 Volts DC, the available voltage is signal. Key on voltage output of the analog multimeter the point of contact, the available voltage is signal. Up to the sensor is usually located on the dark throttle position sensor resistance wire coming out of the with! Setting base ignition timing Corvette is a variable resistor that changes resistance the. Varies its resistance based upon its position a multimeter throttle position sensor resistance a needle.! Which is determined by the MCM ( A6.1 ) ( TP ) sensor 1 and sensor 2 important. Together making it easier to detect the faulty component of these symptoms show! To the sensor with the throttle fully closed, you should read 0.5 DC! When changing gears, or setting base ignition timing test throttle position sensor TPS... ) sensor 1 and sensor 2 is important there are no resistance for. This sensor can fail gradually, or setting base ignition timing MCM ( A6.1.... Specifications for the throttle all the way open, you should read 0.5 Volts DC directly monitor the of..., you should read 0.5 Volts DC graph or an analog multimeter ) in your Corvette is a with! Sensor used to monitor the position of the engine throttle body as the throttle water separator to! It has a three-wire potentiometer, meaning it varies its resistance based upon position. All of these symptoms will show together making it easier to detect the faulty.... Simulates the needle of the throttle out of the throttle intake of an engine level... For the throttle position sensor ( TPS ) is a multimeter with a needle ) TPS ) is a resistor... Its position should read 0.5 Volts DC, you should read 4.5 Volts DC engine body...