All information on this site is copyright protected. However, Alldatadiy.com also includes disassembly instructions for interior trim panels and exterior items like headlights and tail lights. In most cases, their diagrams are right from the factory manuals. Other throttle related DTCs: P0068, P0120, P0121, P0122, P0123, P0124, P0510, & others. Have a helper turn the key on and slightly depress the pedal. 6) Drive the vehicle at various speed so the PCM learns shift points. 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. 5) Start the engine and let it idle for a full 10-mins until it reaches full operating temperature. During the period the PCM will command the throttle body plate to sweep from full open to full close to “learn” the new positions. If no power is present, the computer is at fault. 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. These are example steps, and not in any order. During this period the idle may be higher than normal. 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. Ford throttle body relearn procedure How to do a Ford throttle body relearn procedure. 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. your question in our FREE car repair forums. Possible bare wire on pigtail shorting to ground. This houses the gears to actuate the throttle plate. This diagnostic trouble code (DTC) is a generic powertrain code. 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. 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? Launch Tech USA. The battery will be used for 30 minutes without the alternator available for charging. If you still need help regarding the P2138 trouble code, please post The engine management computer has failed. Place a small amount of electrical grease on the terminals and reconnect it. Probe the throttle body connector for power to the throttle motor. If the buildup occurs gradually, the PCM “learns” the new home position. 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%. If you’re tracking down a wiring issue, Eautorepair.net is the better choice. (adsbygoogle = window.adsbygoogle || []).push({}); In the 1990's automotive manufacturers began industry-wide installation of "Drive by wire" throttle control technology. 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 accelerator pedal sensor or its wiring failed. The short circuit you’re creating here is designed to drain all power from the capacitors inside the PCM. A few points about the electronically controlled 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. 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. The pin that centers and supports the gear fits into the throttle body housing and the top pin fits into the "thin" plastic cover. The bottom line is, it can be a dangerous situation when control over the throttle is lost. They include wiring diagrams and technical service bulletins. If not, replace the throttle body. Check online or in a service manual for a possible relearn procedure to reset the computer. 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. Used to relearn if vehicle has been flashed and/or if CAM position sensor has been changed. With a voltmeter, probe the accelerator pedal sensor. NOTE. Within the next 5 … The reason I purchased this scan tool is because I needed to reset/relearn my 07 Silverado ECM idle throttle. When both voltages agree, the system is functioning properly. Contact Us Throttle/Pedal Pos Sensor/Switch D / E Voltage Correlation. A throttle position sensor (TPS) is situated opposite the throttle linkage connection on the throttle plate. Clean any corrosion using a small pocket screwdriver. NOTE: This information is presented for information purposes only. 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. Turn off all electrical accessories before proceeding. Super Bombad Racer was a Star Wars racing game released for the PS2. The top cover on the throttle body distorted preventing the gears from turning properly. What does that mean? Inspect the top cover on the throttle body for cracks or warping. 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. If the cover is distorted in any way, the gear will be compromised requiring total replacement of the throttle body. To perform a relearn on a Passkey II system, make sure there is a fully charged battery in the vehicle. your question in our FREE car repair forums. Throttle body relearn procedure for a Toyota Corrolla, Auris, Blade. These TSBs result from customer complaints or recognized problems and the factory recommended repair procedure. In those vehicles, the “gas” pedal isn’t connected to the throttle body by a cable. This system is incredibly sensitive and vulnerable to damage, more than any other system. Dec 9, 2020. 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. 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. Inspect it closely for missing or bent female terminals. P1, P1 or P2, P1 and P2. Diagnostics and Drivability. Dec 9, 2020. 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. The motor has a small metal gear protruding up through the housing under the cover. 3) Reconnect the negative battery cable to the battery. Once you have downloaded and installed the reader, simply click on one of the install instructions listed below to download and view the instructions. He was absolutely right, the music sounds like Day of the Tentacle meets Star Wars and is well worth a listen. That saves a lot of time because you don’t have to refer back to the component locator or circuit locations. The camshaft position sensor (CMP) is just one of the many electrical parts found in a vehicle. If there is power the throttle body is malfunctioning. Eautorepair.net redraws factory wiring diagrams in color and includes the component, splice and ground locations right in their diagrams. you take on any vehicle. Remove the throttle position governor and use up to 100% of your vehicle throttle before you reach 40 mph. Two throttle position sensors imbedded in the throttle body convert the amount of throttle opening to a voltage signal to the computer. It will have 5 volts for reference and next to it a varying signal. A motor and gear reduction set inside the throttle body opens and closes the throttle plate to accomplish your request. 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. But when your battery goes dead or you disconnect it to work on your vehicle, the PCM “forgets” the adapated home position. 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. Handle it and its components with extreme care. If any are present, call the dealer and ask if they sell just the top cover. Launch Tech USA. On inspection, you will notice a flat plastic cover on the top of the throttle body. Check online or in a service manual for a possible relearn procedure to reset the computer. 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. Installation Instructions. Last Updated on January 19, 2021. When they deviate for two seconds, the code P2138 is set indicating a malfunction somewhere in the system. Diagnostics and Drivability. The engine will die a couple of times as the idle is being relearned by the ECU. Turn off headlights, blower motor, radio, wipers, etc. It should slowly drop as the engine heats up. Has high intensity warning lights that can be set using a 1 or 2 parameter algorithm. Alldatadiy.com, on the other hand, uses the factory diagrams. Look online for wire terminal identification on the throttle body of your vehicle. 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. ... • Release throttle when fuel cut-off occurs or if RPM value is exceeded. Wait 10 seconds and depress the pedal again for 10 seconds and release. For example, on a Nissan, turn the ignition on and wait 3 seconds. Do this with the negative cable DISCONNECTED from the battery. Look for corrosion. Over time, carbon buildup can accumulate around the throttle plate, changing it’s “home” position. In response the computer sends a voltage to the electric motor to open the throttle plate. 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. Prior to this, the vehicle's throttle was controlled by a simple cable with a direct connection between the gas pedal and the throttle. NOTE: This P2138 DTC is basically the same as P2135, P2136, P2137, P2139, and P2140, diagnostic steps will be the same for all codes. 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. It's mission is to afford greater control over the emissions, fuel economy, traction and stability control, cruise control and transmission responses. The voltage should climb from .5 to 5.0 smoothly. Launch Tech USA: Perform steering wheel angle sensor learn using X-431 Torque. 2) Run a jumper wire from the positive battery cable to the now disconnected negative battery cable terminal. Would have to be done at the dealer but now can be done through the GT. CAM Variation Relearn. The pedal simply provides an electronic signal, telling the throttle body how much acceleration you’re requesting. Get the BEST auto repair information Alldatadiy.com and Eautorepair.net are professional-grade shop manuals—period. Replace it if the voltage spikes or it has no voltage at the signal wire. It will continue to adjust idle during this period. But for the product itself. Additional trouble codes may accompany this code which further identify the problem. Lost Communication with Throttle Actuator Control (TAC) Module. If you don’t do a relearn procedure, the PCM will “hunt” for a new baseline idle. 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. ACDelco GM Original Equipment Fuel Injection Throttle Body Heater Pipe is a GM-recommended replacement component for one or more of the following vehicle … 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. 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