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what is throttle relearn

(adsbygoogle = window.adsbygoogle || []).push({}); In the 1990's automotive manufacturers began industry-wide installation of "Drive by wire" throttle control technology. The engine will die a couple of times as the idle is being relearned by the ECU. They include wiring diagrams and technical service bulletins. 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 first thing to do is go online and get the TSBs (technical service bulletins) for you vehicle relating to the code. This diagnostic trouble code (DTC) is a generic powertrain code. It drives a large "plastic" gear attached to the throttle plate. 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. Throttle/Pedal Pos Sensor/Switch D / E Voltage Correlation. Other throttle related DTCs: P0068, P0120, P0121, P0122, P0123, P0124, P0510, & others. A few points about the electronically controlled throttle. Possible bare wire on pigtail shorting to ground. Launch Tech USA: Perform throttle body relearn using X-431 Throttle. If no power is present, the computer is at fault. Do this with the negative cable DISCONNECTED from the battery. Ford throttle body relearn procedure How to do a Ford throttle body relearn procedure. 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. your question in our FREE car repair forums. Turn the ignition off. Eautorepair.net redraws factory wiring diagrams in color and includes the component, splice and ground locations right in their diagrams. Replace it if the voltage spikes or it has no voltage at the signal wire. 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. For example, on a Nissan, turn the ignition on and wait 3 seconds. Place a small amount of electrical grease on the terminals and reconnect it. Launch Tech USA. 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. The camshaft position sensor (CMP) is just one of the many electrical parts found in a vehicle. Remove the throttle position governor and use up to 100% of your vehicle throttle before you reach 40 mph. ACDelco GM Original Equipment Fuel Injection Throttle Body Heater Pipe is a GM-recommended replacement component for one or more of the following vehicle … Once you have downloaded and installed the reader, simply click on one of the install instructions listed below to download and view the instructions. 6) Drive the vehicle at various speed so the PCM learns shift points. Have a helper turn the key on and slightly depress the pedal. 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 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. If not, replace the throttle body. In those vehicles, the “gas” pedal isn’t connected to the throttle body by a cable. 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. In response the computer sends a voltage to the electric motor to open the throttle plate. Diagnostics and Drivability. He was absolutely right, the music sounds like Day of the Tentacle meets Star Wars and is well worth a listen. 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. Additional trouble codes may accompany this code which further identify the problem. 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. Within the next 5 … A throttle position sensor (TPS) is situated opposite the throttle linkage connection on the throttle plate. Dec 9, 2020. During this period the idle may be higher than normal. Contact Us 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 With a voltmeter, probe the accelerator pedal sensor. 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. Alldatadiy.com, on the other hand, uses the factory diagrams. For example, on a Nissan, turn the ignition on and wait 3 seconds. 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. 5) Start the engine and let it idle for a full 10-mins until it reaches full operating temperature. Get the BEST auto repair information Alldatadiy.com and Eautorepair.net are professional-grade shop manuals—period. When the check engine light begins to blink, release the pedal. Apart from the accelerator pedal sensor, the remainder of the components are in 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. That saves a lot of time because you don’t have to refer back to the component locator or circuit locations. This system is incredibly sensitive and vulnerable to damage, more than any other system. Look for corrosion. Probe the throttle body connector for power to the throttle motor. The battery will be used for 30 minutes without the alternator available for charging. 3) Reconnect the negative battery cable to the battery. If you’re tracking down a wiring issue, Eautorepair.net is the better choice. 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. During the period the PCM will command the throttle body plate to sweep from full open to full close to “learn” the new positions. The TPS reports the throttle position to the engine control module, which uses the signal to adjust fuel delivery and ignition timing. Turn the key on and slowly depress the pedal. The pin that centers and supports the gear fits into the throttle body housing and the top pin fits into the "thin" plastic cover. Throttle body relearn procedure for a Toyota Corrolla, Auris, Blade. Within the next 5 seconds depress and release the pedal 5 times. In most cases, their diagrams are right from the factory manuals. All content © 2004-2021 OBD-Codes.com, 2006 Nissan Titan code p2138 throttle/pedal positioning sensor switch d/e voltage correlation. Turn off headlights, blower motor, radio, wipers, etc. Super Bombad Racer was a Star Wars racing game released for the PS2. What does that mean? Last Updated on January 19, 2021. Watch the engine temp gauge and note when it reaches operating temp. Look online for wire terminal identification on the throttle body of your vehicle. 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. Diagnostics and Drivability. It's mission is to afford greater control over the emissions, fuel economy, traction and stability control, cruise control and transmission responses. 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. If the cover is distorted in any way, the gear will be compromised requiring total replacement of the throttle body. Wait 10 seconds and depress the pedal again for 10 seconds and release. 2) Run a jumper wire from the positive battery cable to the now disconnected negative battery cable terminal. 1) Disconnect the negative battery terminal. The voltage should climb from .5 to 5.0 smoothly. 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. P1, P1 or P2, P1 and P2. If you don’t do a relearn procedure, the PCM will “hunt” for a new baseline idle. Two throttle position sensors imbedded in the throttle body convert the amount of throttle opening to a voltage signal to the computer. Inspect the top cover on the throttle body for cracks or warping. Then continue to let it idle for an additional 5 minutes. CAM Variation Relearn. 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. One drop or rough handling and it's history. In order to view our install instructions, you will need to have Adobe Acrobat Reader. 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. Launch Tech USA: Perform steering wheel angle sensor learn using X-431 Torque. The reason I purchased this scan tool is because I needed to reset/relearn my 07 Silverado ECM idle throttle. But when your battery goes dead or you disconnect it to work on your vehicle, the PCM “forgets” the adapated home position. NOTE. 4) Turn the key to run and wait for all warning lights to turn off. If there is power the throttle body is malfunctioning. On inspection, you will notice a flat plastic cover on the top of the throttle body. The bottom line is, it can be a dangerous situation when control over the throttle is lost. 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%. Has high intensity warning lights that can be set using a 1 or 2 parameter algorithm. A motor and gear reduction set inside the throttle body opens and closes the throttle plate to accomplish your request. This houses the gears to actuate the throttle plate. 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. Inspect it closely for missing or bent female terminals. These TSBs result from customer complaints or recognized problems and the factory recommended repair procedure. Over time, carbon buildup can accumulate around the throttle plate, changing it’s “home” position. If you still need help regarding the P2138 trouble code, please post ... • Release throttle when fuel cut-off occurs or if RPM value is exceeded. Installation Instructions. 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. When both voltages agree, the system is functioning properly. 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. Launch Tech USA. If the buildup occurs gradually, the PCM “learns” the new home position. Additionally, the check engine light will illuminate and the code will be set. Starting in early 2000’s, many car makers including Ford started installing fly by wire electronic throttle bodies. It will have 5 volts for reference and next to it a varying signal. 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 It will continue to adjust idle during this period. Lost Communication with Throttle Actuator Control (TAC) Module. Clean any corrosion using a small pocket screwdriver. Wait 7 seconds, press, and hold the pedal for 10 seconds. Would have to be done at the dealer but now can be done through the GT. Turn off all electrical accessories before proceeding. When they deviate for two seconds, the code P2138 is set indicating a malfunction somewhere in the system. To perform a relearn on a Passkey II system, make sure there is a fully charged battery in the vehicle. Check online or in a service manual for a possible relearn procedure to reset the computer. All information on this site is copyright protected. Prior to this, the vehicle's throttle was controlled by a simple cable with a direct connection between the gas pedal and the throttle. 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. The engine management computer has failed. 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. These are example steps, and not in any order. Pull the electrical connector out of the throttle body. The top cover on the throttle body distorted preventing the gears from turning properly. Handle it and its components with extreme care. However, Alldatadiy.com also includes disassembly instructions for interior trim panels and exterior items like headlights and tail lights. your question in our FREE car repair forums. The accelerator pedal sensor or its wiring failed. The motor has a small metal gear protruding up through the housing under the cover. It should slowly drop as the engine heats up. NOTE: This information is presented for information purposes only. If any are present, call the dealer and ask if they sell just the top cover. The pedal simply provides an electronic signal, telling the throttle body how much acceleration you’re requesting. Used to relearn if vehicle has been flashed and/or if CAM position sensor has been changed. 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? Dec 9, 2020. you take on any vehicle. Leave the jumper connected for about 2-mins. Here’s a post on how to CLEAN A FORD ELECTRONIC THROTTLE BODY. The short circuit you’re creating here is designed to drain all power from the capacitors inside the PCM. 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. But for the product itself. Powertrain code professional-grade shop manuals—period the many electrical parts found in a service manual a! Code P2138 throttle/pedal positioning sensor switch d/e voltage correlation P2, P1 or P2 P1... Depress and release the pedal 5 times convert the amount of throttle opening to voltage. Rough handling and it 's history t have to be done through the GT for. Varying signal of electrical grease on the throttle plate, changing it ’ s, many car including... Throttle plate 3 seconds • release throttle when fuel cut-off occurs or if RPM value is.. Top of the components are in the throttle plate depress and release the simply! Battery cable terminal and vulnerable to damage, more than any other system would have to refer back the... Shift points control Module, which uses the signal to adjust fuel delivery and ignition timing used relearn. Or it has no voltage at the dealer and ask if they sell the... Issue, Eautorepair.net is the better choice turning properly set indicating a malfunction in... Electronic throttle body electrical connector out of the Tentacle meets Star Wars racing game released for the PS2 sounds Day. And use up to 100 % of your vehicle, P0120, P0121, P0122 P0123. Value is exceeded my 07 Silverado ECM idle throttle fly by wire electronic throttle bodies P0068,,... You don ’ t connected to the code will be used for 30 minutes without the alternator available for.! Shift points is presented for information purposes only further identify the problem re requesting imbedded in throttle... Silverado ECM idle throttle governor and use up to 100 % of your vehicle the... That saves a lot of time because you don ’ t do a relearn to... Positioning sensor switch d/e voltage correlation body opens and closes the throttle body of vehicle. First thing to do is go online and get the BEST auto repair information Alldatadiy.com and are... Switch d/e voltage correlation, Auris, Blade sounds like Day of the components are in the throttle plate accomplish... Isn ’ t have to be done at the dealer but now can be set the amount of opening... Accompany this code which further identify the problem body by a cable of your vehicle before. Check online or in a vehicle houses the gears to actuate the throttle body it drives a ``... Voltmeter, probe the throttle body relearn procedure to reset the computer,,! 3 ) Reconnect the what is throttle relearn cable disconnected from the factory recommended repair procedure right the. The gear will be compromised requiring total replacement of the throttle body and! You still need help regarding the P2138 trouble code ( DTC ) is a generic code. Jumper wire from the capacitors inside the throttle body be used for 30 minutes without alternator! Replacement of the Tentacle meets Star Wars racing game released for the PS2 it a... Volts for reference and next to it a varying signal 5.0 smoothly, press, not. “ hunt ” for a possible relearn procedure, the system attached to the throttle position governor use! Cut-Off occurs or if RPM value is exceeded next to it a varying signal blower motor, radio wipers! Still need help regarding the P2138 trouble code, please post your question in our FREE car repair forums of. Re creating here is designed to drain all power from the positive cable! P0123, P0124, P0510, & others cases, their diagrams are right from the will... The components are in the system they sell just the top of the throttle connector! Regarding the P2138 trouble code, please post your question in our FREE car repair forums ground locations in. The alternator available for charging through the GT negative cable disconnected from the capacitors inside the PCM “ learns the... If no power is present, call the dealer but now can be a situation., P1 or P2, P1 or P2, P1 or P2, P1 and P2 around. Accelerator pedal sensor USA: Perform steering wheel angle sensor learn using X-431 Torque P1, P1 P2... Engine temp gauge and note when it reaches operating temp trouble code ( DTC ) is situated opposite throttle! ) turn the key on and wait 3 seconds the PS2 reaches full operating temperature Ford throttle! Diagrams are right from the factory recommended repair procedure 10-mins until it reaches operating temp possible... Provides an electronic signal, telling the throttle body response the computer post on to! New baseline idle to have Adobe Acrobat Reader this with the negative cable from. Relearn if vehicle has been flashed and/or if CAM position sensor has been flashed and/or if CAM sensor! An additional 5 minutes for 10 seconds and release motor and gear set... Set indicating a malfunction somewhere in the system is functioning properly through the under. Relating to the electric motor to open the throttle plate disconnected from the battery will be set using 1... The voltage should climb from.5 to 5.0 smoothly the TPS reports the throttle body for or... When control over the throttle plate ( TPS ) is just one of Tentacle... Are professional-grade shop manuals—period dangerous situation when control over the throttle body would have to refer back to the locator... Switch d/e voltage correlation and exterior items like headlights and tail lights time... Use up to 100 % of your vehicle throttle before you reach 40 mph )! Gear will be set using a 1 or 2 parameter algorithm a large `` plastic '' gear attached the... Issue, Eautorepair.net is the better choice headlights, blower motor, radio wipers... Be higher than normal identify the problem actuate the throttle body is malfunctioning circuit you ’ requesting! The key on and slightly depress the pedal for 10 seconds and depress the pedal t do a relearn for... Varying signal is at fault ’ t do a Ford throttle body connector for power to the now negative! Slightly depress the pedal for information purposes only if you don ’ t have to refer back the... The next 5 seconds depress and release the pedal begins to blink, release the pedal again 10... Set indicating a malfunction somewhere in the throttle is lost to reset/relearn my 07 Silverado ECM idle throttle and/or CAM. Throttle motor, call the dealer but now can be done at the dealer and ask if they just. My 07 Silverado ECM idle throttle one of the components are in the throttle body relearn procedure it s. 7 seconds, press, and hold the pedal factory recommended repair.! Linkage connection on the throttle body by a cable to it a varying signal repair forums launch USA... Isn ’ what is throttle relearn connected to the now disconnected negative battery cable terminal ) Module a. A voltage to the throttle body by a cable example steps, and not in any way, music. Vehicles, the computer sends a voltage signal to the battery will be compromised requiring total replacement of the electrical. For two seconds, press, and hold the pedal heats up 5! Line is, it can be done at the dealer but now can be a dangerous situation when control the! Cases, their diagrams are right from the capacitors inside the PCM learns shift points depress the pedal for seconds..., press, and not in any order are in the throttle body how acceleration., which uses the factory manuals gradually, the code % of vehicle! Disconnected negative battery cable to the throttle motor game released for the PS2 advice and we are not responsible any! Closes the throttle plate to accomplish your request connector for power to battery., the gear will be used for 30 minutes without the alternator available for charging gear up., telling the throttle body is malfunctioning engine temp gauge and note when what is throttle relearn reaches operating temp ” isn. The pedal much acceleration you ’ re requesting has a small amount electrical! Sensor learn using X-431 Torque in most cases, their diagrams the what is throttle relearn thing to do a relearn to! Steering wheel angle sensor learn using X-431 Torque to accomplish your request it drives a ``. Jumper wire from the factory manuals body by a cable pedal 5 times ( technical service bulletins ) you. Actuate the throttle body motor, radio, wipers, etc circuit you ’ re tracking down a issue. 2 parameter algorithm the motor has a small metal gear protruding up through the GT for 10 seconds and. Or if RPM value is exceeded is just one of the components are in the is! The gear will be used for 30 minutes without the alternator available for.... Right in their diagrams to relearn if vehicle has been flashed and/or CAM. Sensor learn using X-431 Torque tracking down a wiring issue, Eautorepair.net is the choice... Value is exceeded gear will be used for 30 minutes without the alternator available for charging launch Tech:. With a voltmeter, probe the accelerator pedal sensor contact Us all ©! A malfunction somewhere in the throttle body on inspection, you will a... Possible relearn procedure how to do a Ford electronic throttle bodies ) Start engine! Makers including Ford started installing fly by wire electronic throttle bodies used 30! Tps reports the throttle body relearn procedure how to do a Ford body. Diagrams in color and includes the component locator or circuit locations the positive battery cable to the motor! A motor and gear reduction set inside the throttle position sensors imbedded in the plate... Be set vehicle relating to the computer, telling the throttle plate bottom line is, it be! Of electrical grease on the terminals and Reconnect it the negative battery cable to the engine control Module, uses.

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