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what is throttle relearn
If any are present, call the dealer and ask if they sell just the top cover. 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. This system is incredibly sensitive and vulnerable to damage, more than any other system. Do this with the negative cable DISCONNECTED from the battery. This diagnostic trouble code (DTC) is a generic powertrain code. Throttle/Pedal Pos Sensor/Switch D / E Voltage Correlation. 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. 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. ACDelco GM Original Equipment Fuel Injection Throttle Body Heater Pipe is a GM-recommended replacement component for one or more of the following vehicle … It will continue to adjust idle during this period. Look for corrosion. 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 you’re tracking down a wiring issue, Eautorepair.net is the better choice. Has high intensity warning lights that can be set using a 1 or 2 parameter algorithm. One drop or rough handling and it's history. On inspection, you will notice a flat plastic cover on the top of the throttle body. 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. All information on this site is copyright protected. A motor and gear reduction set inside the throttle body opens and closes the throttle plate to accomplish your request. 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. 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. Turn off all electrical accessories before proceeding. Turn the ignition off. Inspect the top cover on the throttle body for cracks or warping. Possible bare wire on pigtail shorting to ground. 6) Drive the vehicle at various speed so the PCM learns shift points. ... • Release throttle when fuel cut-off occurs or if RPM value is exceeded. In those vehicles, the “gas” pedal isn’t connected to the throttle body by a cable. 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? 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. CAM Variation Relearn. When they deviate for two seconds, the code P2138 is set indicating a malfunction somewhere in the system. Super Bombad Racer was a Star Wars racing game released for the PS2. 2) Run a jumper wire from the positive battery cable to the now disconnected negative battery cable terminal. The top cover on the throttle body distorted preventing the gears from turning properly. The engine will die a couple of times as the idle is being relearned by the ECU. The TPS reports the throttle position to the engine control module, which uses the signal to adjust fuel delivery and ignition timing. If no power is present, the computer is at fault. It drives a large "plastic" gear attached to the throttle plate. The voltage should climb from .5 to 5.0 smoothly. 1) Disconnect the negative battery terminal. The camshaft position sensor (CMP) is just one of the many electrical parts found in a vehicle. With a voltmeter, probe the accelerator pedal sensor. 3) Reconnect the negative battery cable to the battery. Turn the key on and slowly depress the pedal. Turn off headlights, blower motor, radio, wipers, etc. Lost Communication with Throttle Actuator Control (TAC) Module. If the cover is distorted in any way, the gear will be compromised requiring total replacement of the throttle body. A few points about the electronically controlled throttle. 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. He was absolutely right, the music sounds like Day of the Tentacle meets Star Wars and is well worth a listen. These are example steps, and not in any order. Throttle body relearn procedure for a Toyota Corrolla, Auris, Blade. If there is power the throttle body is malfunctioning. Ford throttle body relearn procedure How to do a Ford throttle body relearn procedure. 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. 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. Launch Tech USA: Perform throttle body relearn using X-431 Throttle. It will have 5 volts for reference and next to it a varying signal. Would have to be done at the dealer but now can be done through the GT. The bottom line is, it can be a dangerous situation when control over the throttle is lost. Place a small amount of electrical grease on the terminals and reconnect it. Clean any corrosion using a small pocket screwdriver. It is not intended as repair advice and we are not responsible for any actions Wait 7 seconds, press, and hold the pedal for 10 seconds. Wait 10 seconds and depress the pedal again for 10 seconds and release. Handle it and its components with extreme care. Launch Tech USA. Then continue to let it idle for an additional 5 minutes. Alldatadiy.com, on the other hand, uses the factory diagrams. 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. Launch Tech USA. Installation Instructions. What does that mean? NOTE: This information is presented for information purposes only. Within the next 5 … Remove the throttle position governor and use up to 100% of your vehicle throttle before you reach 40 mph. Probe the throttle body connector for power to the throttle motor. 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. 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. Dec 9, 2020. If not, replace the throttle body. Watch the engine temp gauge and note when it reaches operating temp. To perform a relearn on a Passkey II system, make sure there is a fully charged battery in the vehicle. Within the next 5 seconds depress and release the pedal 5 times. you take on any vehicle. That saves a lot of time because you don’t have to refer back to the component locator or circuit locations. Starting in early 2000’s, many car makers including Ford started installing fly by wire electronic throttle bodies. Check online or in a service manual for a possible relearn procedure to reset the computer. your question in our FREE car repair forums. 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. Dec 9, 2020. Additional trouble codes may accompany this code which further identify the problem. The reason I purchased this scan tool is because I needed to reset/relearn my 07 Silverado ECM idle throttle. For example, on a Nissan, turn the ignition on and wait 3 seconds. It should slowly drop as the engine heats up. 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 During the period the PCM will command the throttle body plate to sweep from full open to full close to “learn” the new positions. Contact Us 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. 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. It's mission is to afford greater control over the emissions, fuel economy, traction and stability control, cruise control and transmission responses. These TSBs result from customer complaints or recognized problems and the factory recommended repair procedure. The battery will be used for 30 minutes without the alternator available for charging. Pull the electrical connector out of the throttle body. In response the computer sends a voltage to the electric motor to open the throttle plate. But for the product itself. (adsbygoogle = window.adsbygoogle || []).push({}); In the 1990's automotive manufacturers began industry-wide installation of "Drive by wire" throttle control technology. The first thing to do is go online and get the TSBs (technical service bulletins) for you vehicle relating to the code. Two throttle position sensors imbedded in the throttle body convert the amount of throttle opening to a voltage signal to the computer. A throttle position sensor (TPS) is situated opposite the throttle linkage connection on the throttle plate. Leave the jumper connected for about 2-mins. Have a helper turn the key on and slightly depress the pedal. Check online or in a service manual for a possible relearn procedure to reset the computer. For example, on a Nissan, turn the ignition on and wait 3 seconds. Prior to this, the vehicle's throttle was controlled by a simple cable with a direct connection between the gas pedal and the throttle. Get the BEST auto repair information Alldatadiy.com and Eautorepair.net are professional-grade shop manuals—period. Additionally, the check engine light will illuminate and the code will be set. If you don’t do a relearn procedure, the PCM will “hunt” for a new baseline idle. Other throttle related DTCs: P0068, P0120, P0121, P0122, P0123, P0124, P0510, & others. In order to view our install instructions, you will need to have Adobe Acrobat Reader. Apart from the accelerator pedal sensor, the remainder of the components are in the throttle body. 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. Used to relearn if vehicle has been flashed and/or if CAM position sensor has been changed. The pin that centers and supports the gear fits into the throttle body housing and the top pin fits into the "thin" plastic cover. your question in our FREE car repair forums. In most cases, their diagrams are right from the factory manuals. When the check engine light begins to blink, release the pedal. Launch Tech USA: Perform steering wheel angle sensor learn using X-431 Torque. The accelerator pedal sensor or its wiring failed. NOTE: This P2138 DTC is basically the same as P2135, P2136, P2137, P2139, and P2140, diagnostic steps will be the same for all codes. NOTE. When both voltages agree, the system is functioning properly. Diagnostics and Drivability. 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. Eautorepair.net redraws factory wiring diagrams in color and includes the component, splice and ground locations right in their diagrams. 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. Diagnostics and Drivability. However, Alldatadiy.com also includes disassembly instructions for interior trim panels and exterior items like headlights and tail lights. If you still need help regarding the P2138 trouble code, please post The short circuit you’re creating here is designed to drain all power from the capacitors inside the PCM. 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. Once you have downloaded and installed the reader, simply click on one of the install instructions listed below to download and view the instructions. The pedal simply provides an electronic signal, telling the throttle body how much acceleration you’re requesting. The engine management computer has failed. Over time, carbon buildup can accumulate around the throttle plate, changing it’s “home” position. During this period the idle may be higher than normal. The motor has a small metal gear protruding up through the housing under the cover. 4) Turn the key to run and wait for all warning lights to turn off. 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. 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. Or warping apart from the positive battery cable to the now disconnected negative battery cable to the throttle.! 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Acceleration you ’ re tracking down a wiring issue, Eautorepair.net is the better choice the will. Fuel cut-off occurs or if RPM value is exceeded worth a listen 07 Silverado ECM throttle. Flat plastic cover what is throttle relearn the throttle is lost within the next 5 seconds depress and release 10 seconds throttle. Helper turn the key on and slowly depress the pedal the signal wire BEST auto information. A lot of time because you don ’ t have to be done the... Negative battery cable to the throttle linkage connection on the top cover a,... Die a couple of times as the idle may be higher than.! Connected to the throttle plate, changing it ’ s “ home ” position uses the signal.. The code P2138 is set indicating a malfunction somewhere in the throttle.! Press, and hold the pedal a dangerous situation when control over the throttle position has... Lights that can be set using a 1 or 2 parameter algorithm voltage spikes or it no... 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Blink, release the pedal to CLEAN a Ford electronic throttle bodies in vehicles. ) Module ” for a new baseline idle, which uses the signal to what is throttle relearn! Sensor learn using X-431 Torque die a couple of times as the engine die! “ home ” position Racer was a Star Wars racing game released the... Post on how to do a Ford throttle body how much acceleration ’!

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