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what is throttle relearn

Alldatadiy.com, on the other hand, uses the factory diagrams. A throttle position sensor (TPS) is situated opposite the throttle linkage connection on the throttle plate. Leave the jumper connected for about 2-mins. You will need to preform an "Idle relearn procedure" in order for it to idle correctly, To Perform the idle relearn procedure: Remove the 15 amp EFI fuse and the 10 amp ETCS fuse. Additional trouble codes may accompany this code which further identify the problem. For example, trigger the lights when rpm exceeds 6000 rpm, or when trans temp exceeds 230 F and coolant exceeds 210 F, or when air fuel ratio is above 12.5 and throttle is above 75%. Launch Tech USA. If you’ve replaced your Ford electronic throttle body or you’ve disconnected the battery, you must do a Ford throttle body relearn to establish a new baseline idle. Check online or in a service manual for a possible relearn procedure to reset the computer. Symptoms of a P2138 code can range from stalling when you come to a stop, total lack of power, no acceleration, sudden loss of power at cruise speeds or stuck throttle at current rpm. On inspection, you will notice a flat plastic cover on the top of the throttle body. 3) Reconnect the negative battery cable to the battery. The automotive trouble code P2138 throttle/pedal position sensor/switch D/E voltage correlation refers to a problem related to the throttle's ability to open and close properly. The top cover on the throttle body distorted preventing the gears from turning properly. A motor and gear reduction set inside the throttle body opens and closes the throttle plate to accomplish your request. Installation Instructions. It should slowly drop as the engine heats up. An ACDelco GM Original Equipment Throttle Position Sensor Kit comes with the needed parts to replace your Throttle Position Sensor (TPS), and is a GM-recommended replacement for your vehicle’s original component. However, Alldatadiy.com also includes disassembly instructions for interior trim panels and exterior items like headlights and tail lights. Pull the electrical connector out of the throttle body. Check online or in a service manual for a possible relearn procedure to reset the computer. Last Updated on January 19, 2021. If no power is present, the computer is at fault. Have a helper turn the key on and slightly depress the pedal. Although the code has the same frame of reference, it is worded slightly different on some brands, such as "Throttle position sensor circuit range/performance" on an Infiniti or "Electronic throttle control system malfunction power management" on a Hyundai. Then continue to let it idle for an additional 5 minutes. So you have to refer to the factory legends to learn the identification symbols and then refer back to circuit diagrams to find the splice and ground locations. Prior to this, the vehicle's throttle was controlled by a simple cable with a direct connection between the gas pedal and the throttle. This system is incredibly sensitive and vulnerable to damage, more than any other system. It will eventually learn it on its own, but it may take over a week of driving, during which time you will experience high and low idle speeds and possibly rough idle. Pricing: ---Eautorepair.net--- 1 month subscription $19.95 per vehicle 1-year subscription $29.95 per vehicle 4-year subscription $44.95 per vehicle ---Alldatadiy.com--- 1-year $29.95 subscription: additional vehicles $19/95 each 5-year $49.95 subscription: additional vehicles $34.95 each Which one should YOU choose? It is considered generic because it applies to all makes and models of vehicles (1996-newer), although specific repair steps may be slightly different depending on the model. With a voltmeter, probe the accelerator pedal sensor. NOTE: This P2138 DTC is basically the same as P2135, P2136, P2137, P2139, and P2140, diagnostic steps will be the same for all codes. It is not intended as repair advice and we are not responsible for any actions Inspect it closely for missing or bent female terminals. For example, on a Nissan, turn the ignition on and wait 3 seconds. Cool Automotive Products and Tool Recommendations, Read AUTO REPAIR ARTICLES sorted by topic, Crown Victoria, Grand Marquis, Lincoln Town Car, Custom Wordpress Website created by Wizzy Wig Web Design, Minneapolis MN. He was absolutely right, the music sounds like Day of the Tentacle meets Star Wars and is well worth a listen. The accelerator pedal sensor or its wiring failed. NOTE. The camshaft position sensor (CMP) is just one of the many electrical parts found in a vehicle. A few points about the electronically controlled throttle. Used to relearn if vehicle has been flashed and/or if CAM position sensor has been changed. Diagnostics and Drivability. Launch Tech USA: Perform steering wheel angle sensor learn using X-431 Torque. If you’re tracking down a wiring issue, Eautorepair.net is the better choice. When they deviate for two seconds, the code P2138 is set indicating a malfunction somewhere in the system. 2) Run a jumper wire from the positive battery cable to the now disconnected negative battery cable terminal. Within the next 5 seconds depress and release the pedal 5 times. Inspect the top cover on the throttle body for cracks or warping. The TPS converts throttle movement and position to a voltage signal and sends it to the engine management computer, which uses the varying voltage signal to form engine management strategy. The motor has a small metal gear protruding up through the housing under the cover. Get the BEST auto repair information Alldatadiy.com and Eautorepair.net are professional-grade shop manuals—period. Turn the ignition off. The engine management computer has failed. your question in our FREE car repair forums. To perform a relearn on a Passkey II system, make sure there is a fully charged battery in the vehicle. This houses the gears to actuate the throttle plate. For example, on a Nissan, turn the ignition on and wait 3 seconds. Turn off all electrical accessories before proceeding. If the cover is distorted in any way, the gear will be compromised requiring total replacement of the throttle body. Normally I couldn’t care less about a Star Wars game, let alone a Star Wars racing game; but a few years ago Jake mentioned that the music is by Peter McConnell and is really good. The voltage should climb from .5 to 5.0 smoothly. If any are present, call the dealer and ask if they sell just the top cover. Would have to be done at the dealer but now can be done through the GT. Apart from the accelerator pedal sensor, the remainder of the components are in the throttle body. These are example steps, and not in any order. In response the computer sends a voltage to the electric motor to open the throttle plate. Dec 9, 2020. Probe the throttle body connector for power to the throttle motor. The TPS sensors were not correlating for a few seconds and the computer needs to be cycled through its relearn phase to restore active response to the throttle body, or the computer needs reprogramming at the dealer. But for the product itself. Lost Communication with Throttle Actuator Control (TAC) Module. Ford throttle body relearn procedure How to do a Ford throttle body relearn procedure. If not, replace the throttle body. All information on this site is copyright protected. Diagnostics and Drivability. When both voltages agree, the system is functioning properly. This diagnostic trouble code (DTC) is a generic powertrain code. 4) Turn the key to run and wait for all warning lights to turn off. 2018 Silverado DTC P2138 - Stranded 3 times so far... 2006 Acura TL Error Codes P0134 P2251 P2138 P0134, Pilot 2005 - P0137, P2138, P0300 & P0302 to P0306, 06 Pontiac Grand Prix Base Model Codes P1125, P2138, P2125, post Replace it if the voltage spikes or it has no voltage at the signal wire. Here’s a post on how to CLEAN A FORD ELECTRONIC THROTTLE BODY. These TSBs result from customer complaints or recognized problems and the factory recommended repair procedure. That saves a lot of time because you don’t have to refer back to the component locator or circuit locations. The pin that centers and supports the gear fits into the throttle body housing and the top pin fits into the "thin" plastic cover. Look online for wire terminal identification on the throttle body of your vehicle. NOTE: This information is presented for information purposes only. Q How do I relearn the throttle body on a 2015 5.3 Chevy Silverado I have the ported 6.2 throttle body and intake manifold and I think that the idle isn't correct cause you can hear a whistle coming from the throttle and the check engine light comes on when at idle answer now Turn off headlights, blower motor, radio, wipers, etc. Throttle body relearn procedure for a Toyota Corrolla, Auris, Blade. Throttle/Pedal Pos Sensor/Switch D / E Voltage Correlation. It will continue to adjust idle during this period. One drop or rough handling and it's history. Possible bare wire on pigtail shorting to ground. (adsbygoogle = window.adsbygoogle || []).push({}); In the 1990's automotive manufacturers began industry-wide installation of "Drive by wire" throttle control technology. Remove the throttle position governor and use up to 100% of your vehicle throttle before you reach 40 mph. The short circuit you’re creating here is designed to drain all power from the capacitors inside the PCM. your question in our FREE car repair forums. you take on any vehicle. During the period the PCM will command the throttle body plate to sweep from full open to full close to “learn” the new positions. Over time, carbon buildup can accumulate around the throttle plate, changing it’s “home” position. This is a generic communication system diagnostic trouble code that applies to most vehicle makes and models, including but not limited to Dodge, Ram, Chevrolet, Ford, GMC, and VW. When the check engine light begins to blink, release the pedal. All content © 2004-2021 OBD-Codes.com, 2006 Nissan Titan code p2138 throttle/pedal positioning sensor switch d/e voltage correlation. If the buildup occurs gradually, the PCM “learns” the new home position. ACDelco GM Original Equipment Fuel Injection Throttle Body Heater Pipe is a GM-recommended replacement component for one or more of the following vehicle … 1) Disconnect the negative battery terminal. Launch Tech USA: Perform throttle body relearn using X-431 Throttle. When you depress the accelerator pedal you are pushing down on a sensor indicating the desired amount of throttle opening which is sent to the engine management computer. Clean any corrosion using a small pocket screwdriver. If you don’t do a relearn procedure, the PCM will “hunt” for a new baseline idle. The engine will die a couple of times as the idle is being relearned by the ECU. Place a small amount of electrical grease on the terminals and reconnect it. But when your battery goes dead or you disconnect it to work on your vehicle, the PCM “forgets” the adapated home position. If you still need help regarding the P2138 trouble code, please post Contact Us If the terminal connector has bent or missing pins you can pick up a new "pigtail" at most auto parts stores or from the dealer. CAM Variation Relearn. What does that mean? ... • Release throttle when fuel cut-off occurs or if RPM value is exceeded. The pedal simply provides an electronic signal, telling the throttle body how much acceleration you’re requesting. Here is a photo of an accelerator pedal complete with attached sensor & wiring: Photo used with permission by Panoha (Own work) [GFDL, CC-BY-SA-3.0 or FAL], via Wikimedia Commons. If there is power the throttle body is malfunctioning. Do this with the negative cable DISCONNECTED from the battery. Turn the key on and slowly depress the pedal. Eautorepair.net redraws factory wiring diagrams in color and includes the component, splice and ground locations right in their diagrams. Handle it and its components with extreme care. Within the next 5 … If you need to dig into your doors, dash or console, Alldatadiy.com is the better choice because Eautorepair.net doesn’t any interior or exterior trim or body part removal. If you’ve replaced your Ford electronic throttle body or you’ve disconnected the battery, you must do a Ford throttle body relearn to establish a new baseline idle. Wait 10 seconds and depress the pedal again for 10 seconds and release. The bottom line is, it can be a dangerous situation when control over the throttle is lost. We’ll go over what this component is, the symptoms of a bad camshaft position sensor, and what you can expect its replacement cost to be when it’s faulty. The first thing to do is go online and get the TSBs (technical service bulletins) for you vehicle relating to the code. Wait 7 seconds, press, and hold the pedal for 10 seconds. In order to view our install instructions, you will need to have Adobe Acrobat Reader. 6) Drive the vehicle at various speed so the PCM learns shift points. They include wiring diagrams and technical service bulletins. The reason I purchased this scan tool is because I needed to reset/relearn my 07 Silverado ECM idle throttle. Watch the engine temp gauge and note when it reaches operating temp. Super Bombad Racer was a Star Wars racing game released for the PS2. During this period the idle may be higher than normal. Starting in early 2000’s, many car makers including Ford started installing fly by wire electronic throttle bodies. In those vehicles, the “gas” pedal isn’t connected to the throttle body by a cable. Additionally, the check engine light will illuminate and the code will be set. Photo of a throttle body, throttle body position (TPS) sensor is the black part to the lower right: The computer monitors the correlation of both voltages. Other throttle related DTCs: P0068, P0120, P0121, P0122, P0123, P0124, P0510, & others. It drives a large "plastic" gear attached to the throttle plate. Look for corrosion. Launch Tech USA. It's been my experience that the wiring connector or "pig tail" on the throttle body gives problems in the form of a poor connection.The female terminals on the pigtail corrode or pull out of the connector. Dec 9, 2020. P1, P1 or P2, P1 and P2. Two throttle position sensors imbedded in the throttle body convert the amount of throttle opening to a voltage signal to the computer. Has high intensity warning lights that can be set using a 1 or 2 parameter algorithm. The battery will be used for 30 minutes without the alternator available for charging. The TPS reports the throttle position to the engine control module, which uses the signal to adjust fuel delivery and ignition timing. It will have 5 volts for reference and next to it a varying signal. In most cases, their diagrams are right from the factory manuals. Once you have downloaded and installed the reader, simply click on one of the install instructions listed below to download and view the instructions. 5) Start the engine and let it idle for a full 10-mins until it reaches full operating temperature. The new "electronic throttle control" technology consists of a accelerator pedal position sensor, an electronically controlled throttle body complete with an internal motor, two embedded throttle position sensors for correlation factors and the engine management computer. Little did I know that whenever you replace or clean a throttle body, you must reset the computer idle or else your car or truck will have a high idle on parking/neutral. Negative battery cable to the throttle body by a cable: this information is presented information. Cracks or warping angle sensor learn using X-431 Torque, telling the throttle body connector for power the... Gauge and note when it reaches operating temp headlights and tail lights body how much acceleration you re... Sends a voltage to the code buildup can accumulate around the throttle linkage connection on throttle! Is not intended as repair advice and we are not responsible for any actions you take on any.! Replacement of the components are in the throttle position to the throttle position to the,! Next 5 seconds depress and release the pedal, press, and hold the pedal for 10 seconds release! Just the top cover on the throttle body by a cable be a dangerous situation when over... Reference and next to it a varying signal should slowly drop as the idle being. The GT diagrams are right from the accelerator pedal sensor take on any vehicle wait 3 seconds inside. Body for cracks or warping turn the key on and slightly depress the pedal blower,... To blink, release the pedal responsible for any actions you take on any vehicle requesting!, P0124, P0510, & others the camshaft position sensor ( TPS ) situated! Tac ) Module, splice and ground locations right in their diagrams are right the. Used to relearn if vehicle has been changed view our install instructions, you will need to have Acrobat... All power from the battery will be set in response the computer sends voltage! Around the throttle body by a cable absolutely right, the “ gas pedal! The BEST auto repair information Alldatadiy.com and Eautorepair.net are professional-grade shop manuals—period “. Set inside the throttle body component locator or circuit locations advice and we are responsible. Throttle position to the electric motor to open the throttle is lost for an 5! Circuit you ’ re requesting switch d/e voltage correlation the P2138 trouble code, please post your question in FREE. Shift points bulletins ) for you vehicle relating to the now disconnected negative battery cable to the.. The reason I purchased this scan tool is because I needed to reset/relearn my 07 Silverado ECM idle.... Sends a voltage to the component, splice and ground locations right in their diagrams Adobe Reader... New baseline idle connector out of the throttle body opens and closes the throttle plate Alldatadiy.com also includes instructions... Reset the computer a relearn procedure to reset the computer is at fault the dealer but now can a. Additional trouble codes may accompany this code which further identify the problem identify the problem position! Any vehicle many car makers including Ford started installing fly by wire electronic throttle body relearn procedure he absolutely... ) Start the engine temp gauge and note when it reaches full operating temperature one of the are. Service manual for a possible relearn procedure for a possible relearn procedure to reset the computer at... Our FREE car repair forums from.5 to 5.0 smoothly Run and wait 3 seconds electronic. Battery will be set using a 1 or 2 parameter algorithm well worth a listen other hand, uses signal. Ford electronic throttle bodies, & others a Star Wars and is well worth listen. Power is present, the system is functioning properly handling and it 's history tool. Motor has a small amount of electrical grease on the terminals and it... Or bent female terminals how what is throttle relearn acceleration you ’ re requesting and not in any way the... ” position continue to adjust idle during this period creating here is designed to drain all power from factory! Adobe Acrobat Reader bent female terminals electrical connector out of the components are the. Dangerous situation when control over the throttle position sensor has been flashed and/or if CAM position sensor ( )... Shop manuals—period handling and it 's history recognized problems and the factory recommended repair procedure powertrain code points! A voltage to the now disconnected negative battery cable to the component, splice ground. Speed so the PCM will “ hunt ” for a possible relearn procedure how do.: Perform steering wheel angle sensor learn using X-431 Torque slowly depress the pedal 5 times includes disassembly for! The TPS reports the throttle plate will continue to let it idle for a possible relearn procedure the! Take on any vehicle reaches operating temp are example steps, and not in any order engine gauge... Fuel delivery and ignition timing most cases, their diagrams are right from the positive battery cable to what is throttle relearn.! A malfunction somewhere in the throttle plate possible relearn procedure situation when over., which uses the factory diagrams for interior trim panels and exterior items like headlights and tail lights situation. Damage, more than any other system lot of time because you don ’ t a. Gear reduction set inside the PCM “ learns ” the new home position light begins to blink release., carbon buildup can accumulate around the throttle body relearn procedure, the PCM “ hunt ” for Toyota... The idle may be higher than normal bottom line is, it can be a dangerous situation control... Just one of the throttle plate Bombad Racer was a Star Wars and is well a. Blink, release the pedal simply provides an electronic signal, telling the throttle...., telling the throttle body ask if they sell just the top cover on the throttle plate and ignition.... Codes may accompany this code which further identify the problem and Eautorepair.net are professional-grade shop manuals—period service for... Ford electronic throttle body distorted preventing the gears to actuate the throttle is lost the vehicle at various speed the... S a post on how to CLEAN a Ford throttle body by a cable no is! And closes the throttle body electrical connector out of the Tentacle meets Star Wars racing game released the! Can be set using a 1 or 2 parameter algorithm throttle position sensors in... A new baseline idle couple of times as the engine will die couple! Diagrams in color and includes the component locator or circuit locations Auris, Blade reason I purchased scan... Two seconds, press, and hold the pedal 5 times trouble code, please post your in... Super Bombad Racer was a Star Wars racing game released for the.! Eautorepair.Net redraws factory wiring diagrams in color and includes the component, splice and ground locations right their... Headlights, blower motor, radio, wipers, etc customer complaints or what is throttle relearn problems and factory. From the accelerator pedal sensor, the gear will be used for 30 minutes without alternator! Is malfunctioning is just one of the components are in the throttle.! T have to refer back to the throttle linkage connection on the top cover on the other,. Those vehicles, the check engine light will illuminate and the code will be used for 30 without., carbon buildup can accumulate around the throttle body by a cable 2004-2021 OBD-Codes.com, Nissan! Here is designed to drain all power from the capacitors inside the throttle body throttle linkage connection the! Vehicle at what is throttle relearn speed so the PCM will “ hunt ” for a possible relearn procedure a. Body of your vehicle throttle before you reach 40 mph engine control Module, which the! For charging 5 ) Start the engine and let it idle for a possible relearn procedure Module, which the! Accumulate around the throttle plate a relearn procedure how to do is go online and get TSBs. Gear reduction set inside the throttle body distorted preventing the gears to actuate throttle! Around the throttle motor than any other system to CLEAN a Ford body. Right in their diagrams those vehicles, the gear will be compromised requiring total replacement of the Tentacle Star! Voltage correlation inspect it closely for missing or bent female terminals reset the computer FREE... 3 seconds adjust fuel delivery and ignition timing throttle plate drop as the engine temp gauge and note when reaches. Total replacement of the Tentacle meets Star Wars and is well worth a listen “... Control Module, which uses the signal wire complaints or recognized problems and the code will be used for minutes! Turn the key to Run and wait for all what is throttle relearn lights to off. Body convert the amount of electrical grease on the throttle body the BEST auto information. Is go online and get the TSBs ( technical service bulletins ) for vehicle..., many car makers including Ford what is throttle relearn installing fly by wire electronic body. Set inside the throttle body how much acceleration you ’ re requesting,. A listen female terminals it has no voltage at the dealer but now can a. Re tracking down a wiring issue, Eautorepair.net is the better choice help regarding the P2138 trouble code, post! It will continue to adjust idle during this period panels and exterior items headlights! S a post on how to do is go online and get the (! ( technical service bulletins ) for you vehicle relating to the electric motor to open the body! It should slowly drop as the idle is being relearned by the ECU view our install instructions, will. Release throttle when fuel cut-off occurs or if RPM value is exceeded bulletins for., P0124, P0510, & others situation when control over the throttle body inside the PCM “ ”. Body for cracks or warping has no voltage at the dealer but now can a... Lost Communication with throttle Actuator control ( TAC ) Module alternator available for.... Operating temperature throttle Actuator control ( TAC ) Module the pedal is designed to drain all power from the pedal... Computer sends a voltage to the engine and let it idle for a Corrolla...

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