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. (adsbygoogle = window.adsbygoogle || []).push({}); In the 1990's automotive manufacturers began industry-wide installation of "Drive by wire" throttle control technology. A motor and gear reduction set inside the throttle body opens and closes the throttle plate to accomplish your request. If no power is present, the computer is at fault. Throttle body relearn procedure for a Toyota Corrolla, Auris, Blade. It drives a large "plastic" gear attached to the throttle plate. Launch Tech USA: Perform steering wheel angle sensor learn using X-431 Torque. Additional trouble codes may accompany this code which further identify the problem. Look for corrosion. The bottom line is, it can be a dangerous situation when control over the throttle is lost. Throttle/Pedal Pos Sensor/Switch D / E Voltage Correlation. During the period the PCM will command the throttle body plate to sweep from full open to full close to “learn” the new positions. With a voltmeter, probe the accelerator pedal sensor. If any are present, call the dealer and ask if they sell just the top cover. 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. For example, on a Nissan, turn the ignition on and wait 3 seconds. 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. 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. Once you have downloaded and installed the reader, simply click on one of the install instructions listed below to download and view the instructions. Replace it if the voltage spikes or it has no voltage at the signal wire. Turn off all electrical accessories before proceeding. On inspection, you will notice a flat plastic cover on the top of the throttle body. 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 Additionally, the check engine light will illuminate and the code will be set. A few points about the electronically controlled throttle. If the buildup occurs gradually, the PCM “learns” the new home position. Last Updated on January 19, 2021. 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 this period the idle may be higher than normal. Within the next 5 … ... • Release throttle when fuel cut-off occurs or if RPM value is exceeded. 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. That saves a lot of time because you don’t have to refer back to the component locator or circuit locations. They include wiring diagrams and technical service bulletins. 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. 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. Here’s a post on how to CLEAN A FORD ELECTRONIC THROTTLE BODY. Look online for wire terminal identification on the throttle body of your vehicle. These TSBs result from customer complaints or recognized problems and the factory recommended repair procedure. Remove the throttle position governor and use up to 100% of your vehicle throttle before you reach 40 mph. 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 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. Check online or in a service manual for a possible relearn procedure to reset the computer. Alldatadiy.com, on the other hand, uses the factory diagrams. 1) Disconnect the negative battery terminal. This diagnostic trouble code (DTC) is a generic powertrain code. Turn the ignition off. ACDelco GM Original Equipment Fuel Injection Throttle Body Heater Pipe is a GM-recommended replacement component for one or more of the following vehicle … The engine will die a couple of times as the idle is being relearned by the ECU. 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%. The camshaft position sensor (CMP) is just one of the many electrical parts found in a vehicle. Has high intensity warning lights that can be set using a 1 or 2 parameter algorithm. 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. It will have 5 volts for reference and next to it a varying signal. 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. The accelerator pedal sensor or its wiring failed. your question in our FREE car repair forums. 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. 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. The pin that centers and supports the gear fits into the throttle body housing and the top pin fits into the "thin" plastic 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. 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. Within the next 5 seconds depress and release the pedal 5 times. When both voltages agree, the system is functioning properly. Super Bombad Racer was a Star Wars racing game released for the PS2. Wait 7 seconds, press, and hold the pedal for 10 seconds. 2) Run a jumper wire from the positive battery cable to the now disconnected negative battery cable terminal. The short circuit you’re creating here is designed to drain all power from the capacitors inside the PCM. The motor has a small metal gear protruding up through the housing under the cover. In order to view our install instructions, you will need to have Adobe Acrobat Reader. Launch Tech USA. 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. Other throttle related DTCs: P0068, P0120, P0121, P0122, P0123, P0124, P0510, & others. Probe the throttle body connector for power to the throttle motor. He was absolutely right, the music sounds like Day of the Tentacle meets Star Wars and is well worth a listen. Turn the key on and slowly depress the pedal. To perform a relearn on a Passkey II system, make sure there is a fully charged battery in the vehicle. Then continue to let it idle for an additional 5 minutes. For example, on a Nissan, turn the ignition on and wait 3 seconds. What does that mean? This houses the gears to actuate the throttle plate. If you still need help regarding the P2138 trouble code, please post Installation Instructions. If you don’t do a relearn procedure, the PCM will “hunt” for a new baseline idle. The pedal simply provides an electronic signal, telling the throttle body how much acceleration you’re requesting. Lost Communication with Throttle Actuator Control (TAC) Module. One drop or rough handling and it's history. Check online or in a service manual for a possible relearn procedure to reset the computer. Turn off headlights, blower motor, radio, wipers, etc. Used to relearn if vehicle has been flashed and/or if CAM position sensor has been changed. All content © 2004-2021 OBD-Codes.com, 2006 Nissan Titan code p2138 throttle/pedal positioning sensor switch d/e voltage correlation. Clean any corrosion using a small pocket screwdriver. 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. If not, replace the throttle body. When they deviate for two seconds, the code P2138 is set indicating a malfunction somewhere in the system. Ford throttle body relearn procedure How to do a Ford throttle body relearn procedure. Over time, carbon buildup can accumulate around the throttle plate, changing it’s “home” position. The engine management computer has failed. Possible bare wire on pigtail shorting to ground. When the check engine light begins to blink, release the pedal. 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 reason I purchased this scan tool is because I needed to reset/relearn my 07 Silverado ECM idle throttle. The first thing to do is go online and get the TSBs (technical service bulletins) for you vehicle relating to the code. NOTE. If you’re tracking down a wiring issue, Eautorepair.net is the better choice. Would have to be done at the dealer but now can be done through the GT. Dec 9, 2020. your question in our FREE car repair forums. It will continue to adjust idle during this period. Have a helper turn the key on and slightly depress the pedal. If there is power the throttle body is malfunctioning. Launch Tech USA. The TPS reports the throttle position to the engine control module, which uses the signal to adjust fuel delivery and ignition timing. Eautorepair.net redraws factory wiring diagrams in color and includes the component, splice and ground locations right in their diagrams. 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. Starting in early 2000’s, many car makers including Ford started installing fly by wire electronic throttle bodies. It is not intended as repair advice and we are not responsible for any actions Diagnostics and Drivability. Contact Us 3) Reconnect the negative battery cable to the battery. Leave the jumper connected for about 2-mins. But when your battery goes dead or you disconnect it to work on your vehicle, the PCM “forgets” the adapated home position. The top cover on the throttle body distorted preventing the gears from turning properly. Watch the engine temp gauge and note when it reaches operating temp. Inspect it closely for missing or bent female terminals. you take on any vehicle. 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? 5) Start the engine and let it idle for a full 10-mins until it reaches full operating temperature. Prior to this, the vehicle's throttle was controlled by a simple cable with a direct connection between the gas pedal and the throttle. 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. 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. Do this with the negative cable DISCONNECTED from the battery. This system is incredibly sensitive and vulnerable to damage, more than any other system. But for the product itself. Place a small amount of electrical grease on the terminals and reconnect it. 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. Apart from the accelerator pedal sensor, the remainder of the components are in the throttle body. 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. Diagnostics and Drivability. Get the BEST auto repair information Alldatadiy.com and Eautorepair.net are professional-grade shop manuals—period. It should slowly drop as the engine heats up. Pull the electrical connector out of the throttle body. 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. 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. It's mission is to afford greater control over the emissions, fuel economy, traction and stability control, cruise control and transmission responses. Dec 9, 2020. 6) Drive the vehicle at various speed so the PCM learns shift points. Launch Tech USA: Perform throttle body relearn using X-431 Throttle. In those vehicles, the “gas” pedal isn’t connected to the throttle body by a cable. However, Alldatadiy.com also includes disassembly instructions for interior trim panels and exterior items like headlights and tail lights. NOTE: This P2138 DTC is basically the same as P2135, P2136, P2137, P2139, and P2140, diagnostic steps will be the same for all codes. 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. Inspect the top cover on the throttle body for cracks or warping. In most cases, their diagrams are right from the factory manuals. NOTE: This information is presented for information purposes only. These are example steps, and not in any order. The battery will be used for 30 minutes without the alternator available for charging. The voltage should climb from .5 to 5.0 smoothly. 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Electrical connector out of the throttle plate, changing it ’ s “ home ” position distorted preventing the to... A malfunction somewhere in the throttle plate, changing it ’ s, many car including! Present, the PCM is a generic powertrain code the negative cable disconnected the. For an additional 5 minutes a generic powertrain code gradually, the PCM learns shift points to it varying.

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