{"version":"1.1.0","producer":"fm.getcarcurious","layer":"official","episode":{"title":"355: Kia 2.4L P0010 Diagnostic","url":"http://getcarcurious.com/episodes/355-kia-2-4l-p0010-diagnostic","audioUrl":"https://www.buzzsprout.com/809423/episodes/19309343-355-kia-2-4l-p0010-diagnostic.mp3","description":"This week on the show I share a case study on a 2016 Kia Optima 2.4L that's setting a P0010 in the ECM after multiple components have been replaced, including the ECM. This is a common code for these vehicles and they have multiple failure points in this system. This car turned out to be something more interesting than the typical fault. Website- https://autodiagpodcast.com/Facebook Group- https://www.facebook.com/groups/223994012068320/YouTube- https://www.youtube.com/@automotivediagnosticpodcas8832Email- STmobilediag@gmail.comPlease make sure to check out our sponsors!SJ Auto Solutions- https://sjautosolutions.com/Automotive Seminars- https://automotiveseminars.com/L1 Automotive Training- https://www.l1training.com/Autorescue tools- https://autorescuetools.com/  "},"annotations":[{"id":402930,"startTime":173.92000000000002,"endTime":183.92,"type":"car","title":"Kia Optima","url":"/cars/kia/optima","image":"https://upload.wikimedia.org/wikipedia/commons/5/56/%2716_Kia_Optima_%28MIAS_%2716%29.jpg","quote":"...strange one. So I'll get into it. It's a 2016 Kia Optima with a 2.4 liter. And the code that is setting in...","canonicalId":"car:kia:optima","priority":0.5,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"The Kia Optima is a mid-size sedan built for everyday commuting, and the 2016 model with a 2.4-liter engine is a common configuration. In a diagnostic context, it’s often discussed because engine-related trouble codes can point to issues in the fuel, air, or emissions systems that affect drivability and emissions performance. A podcast might focus on it when a “strange” code appears and the troubleshooting path isn’t straightforward.","simplifiedExplanation":"The Kia Optima is a regular passenger car (a sedan) meant for daily driving. The 2016 model mentioned has a 2.4-liter engine, and the trouble code in the story means the car’s computer noticed something it didn’t like. Mechanics use those codes to figure out what part might be causing the problem.","imageAttribution":"Bull-Doser (Public domain)","imageLicense":"Public domain","imageSourceUrl":"https://commons.wikimedia.org/wiki/File:'16_Kia_Optima_(MIAS_'16).jpg"}},{"id":402931,"startTime":207.2,"endTime":216.4,"type":"term","title":"Kia 2.4 P0010","url":"/glossary/kia-2-4-p0010","quote":"You can hop on YouTube and punch in Kia 2.4 P0010. And you'll have 20 videos of people repairing this in various ways.","canonicalId":"term:kia-2-4-p0010","priority":0.9,"confidence":0.9,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"P0010 is a diagnostic trouble code (DTC) that points to a problem related to the intake camshaft timing control system. In this episode’s context, the host is tying it to Kia’s 2.4L engine and specifically the control motor for an electronic cam phaser.","simplifiedExplanation":"P0010 is an error code your car can store when it detects something wrong with how the engine times the intake camshaft. The host says this one is related to the motor that controls the cam phaser on a Kia 2.4L."}},{"id":402932,"startTime":224.6,"endTime":256.8,"type":"term","title":"electronic phaser","url":"/glossary/electronic-phaser","quote":"Hey, there's a circuit problem with the control motor for this electronic phaser. Now, this phaser, again, is going to use just power and ground to operate...","canonicalId":"term:electronic-phaser","priority":0.85,"confidence":0.9,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"An electronic cam phaser is a variable valve timing (VVT) actuator that changes camshaft position using an electrically controlled mechanism. Compared with older hydraulic or simpler VVT designs, an electronic phaser can fail at electrical and mechanical contact points, which is why the host emphasizes power/ground control and brush-style motor components.","simplifiedExplanation":"A cam phaser is what shifts the timing of the camshaft. When it’s called “electronic,” it means the car uses an electric motor to move it, so electrical parts inside can wear out or fail."}},{"id":402933,"startTime":224.6,"endTime":232.3,"type":"term","title":"circuit problem","url":"/glossary/circuit-problem","quote":"…the definition of the code on your scan tool is, hey, there's a circuit problem with the control motor for this electronic phaser.","canonicalId":"term:circuit-problem","priority":0.8,"confidence":0.85,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"A “circuit problem” in a scan-tool code means the engine control module (ECM/PCM) detected an electrical fault in the wiring or the actuator it controls. Here, the host says the fault is specifically with the control motor circuit for the electronic phaser.","simplifiedExplanation":"When a code says “circuit problem,” it usually means the car saw an electrical issue—like broken wiring, a bad connector, or a failing motor. In this case, it’s the motor circuit that moves the cam phaser."}},{"id":402934,"startTime":262.3,"endTime":277.4,"type":"term","title":"brush style motor","url":"/glossary/brush-style-motor","quote":"…it's still an electrical motor. It's got power and ground. Okay. It's got actual contacts on it. It's got brushes, if you will. It's more like a brush style motor.","canonicalId":"term:brush-style-motor","priority":0.65,"confidence":0.8,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"A brush-style motor uses physical brushes and electrical contacts to transfer current to the rotating armature. The host highlights that this design can create failure points—especially around the brushes and the connector/plug interface—when used inside an electronic cam phaser assembly.","simplifiedExplanation":"A brush-style motor uses small contact pieces (brushes) to send electricity to the moving part. Those contacts can wear out or cause poor electrical contact over time, leading to failures."}},{"id":402935,"startTime":317.5,"endTime":326.2,"type":"term","title":"armature","url":"/glossary/armature","quote":"…on the front of the phaser and the motor… two copper rings that serve as the armature, if you will.","canonicalId":"term:armature","priority":0.6,"confidence":0.7,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"The armature is the rotating electrical part inside a motor that interacts with the motor’s electrical supply to create motion. The host uses “armature” to describe the function of the copper rings in the phaser’s motor assembly that help transfer electrical current as it spins.","simplifiedExplanation":"In a motor, the armature is the part that spins and turns electrical energy into motion. The host is describing how the phaser’s internal copper contacts help power that spinning action."}},{"id":402936,"startTime":339.0,"endTime":348.8,"type":"term","title":"VVT phaser","url":"/glossary/vvt-phaser","quote":"…to actuate it to move the camshaft. Right. The end result is the same as everything we've been doing with variable valve timing is to be able to move the camshaft back and forth.","canonicalId":"term:vvt-phaser","priority":0.75,"confidence":0.8,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"A VVT phaser is the component that adjusts camshaft timing to improve engine efficiency and drivability. The host notes the end goal is the same—moving the camshaft back and forth—but the electronic phaser approach differs from “traditional” VVT phasers.","simplifiedExplanation":"VVT means variable valve timing, and a phaser is the part that changes when the camshaft opens the valves. The host says the purpose is the same, even though the electronic version works differently."}},{"id":402937,"startTime":343.5,"endTime":348.8,"type":"term","title":"variable valve timing","url":"/glossary/variable-valve-timing","quote":"…The end result is the same as everything we've been doing with variable valve timing is to be able to move the camshaft back and forth.","canonicalId":"term:variable-valve-timing","priority":0.7,"confidence":0.85,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Variable valve timing (VVT) is the strategy of changing when the engine’s intake and/or exhaust valves open relative to crankshaft position. By shifting cam timing under different loads, the engine can optimize torque, emissions, and efficiency; the host frames the electronic phaser as a different way to achieve that same timing change.","simplifiedExplanation":"Variable valve timing is how the engine changes valve timing depending on driving conditions. The goal is to make the engine breathe and respond better across different loads."}},{"id":402938,"startTime":405.6,"endTime":412.4,"type":"term","title":"TSB","url":"/glossary/tsb","quote":"there's a plug in the\n[405.6s] center of this unit that can either come out or leak. And there's a whole TSB about it if you\n[412.4s] look this up.","canonicalId":"term:tsb","priority":0.6,"confidence":0.95,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"TSB stands for Technical Service Bulletin. It’s an official manufacturer notice that describes known issues and repair procedures, often including diagnostic tips and parts updates.","simplifiedExplanation":"TSB means the manufacturer has published a known-problem bulletin for a specific issue. It usually tells mechanics what to check and how to fix it."}},{"id":402939,"startTime":425.2,"endTime":425.2,"type":"term","title":"solenoid","url":"/glossary/solenoid","quote":"or, you know, maybe an internal failure of the solenoid,\n[425.2s] any of that could happen.","canonicalId":"term:solenoid","priority":0.6,"confidence":0.85,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"A solenoid is an electrically controlled valve/actuator that moves when current is applied. In cam-timing systems, solenoids often control oil flow to adjust timing, so an internal solenoid failure can trigger timing-related codes.","simplifiedExplanation":"A solenoid is an electrically operated switch that moves a small valve. If it sticks or fails, the engine may not be able to adjust timing correctly."}},{"id":402940,"startTime":462.9,"endTime":469.4,"type":"term","title":"PCM","url":"/glossary/pcm","quote":"They found actual damaged contacts. And they even found that there was no control coming\n[469.4s] out of the PCM for this circuit.","canonicalId":"term:pcm","priority":0.7,"confidence":0.85,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"PCM stands for Powertrain Control Module, a computer that manages the engine and often the transmission/drive systems. In diagnostics, technicians check whether the PCM is actually commanding a circuit (for example, sending control voltage/current to a solenoid).","simplifiedExplanation":"PCM is another name for the car’s main computer for the powertrain. In troubleshooting, mechanics check whether it’s sending the right command to the part that should be moving or switching."}},{"id":402941,"startTime":469.4,"endTime":474.9,"type":"term","title":"picoscope","url":"/glossary/picoscope","quote":"they have a picoscope and they were looking at how it was\n[474.9s] outputting, and the fact that it wasn't.","canonicalId":"term:picoscope","priority":0.65,"confidence":0.9,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"A picoscope is a brand/type of automotive oscilloscope used to view electrical waveforms. It helps diagnose whether a control signal is present and how it behaves over time, which is useful when a circuit is suspected but not obviously failing.","simplifiedExplanation":"A picoscope is a tool that lets a technician “see” electricity signals. It’s used to confirm whether the car’s computer is sending the right kind of signal to a component."}},{"id":402942,"startTime":479.2,"endTime":491.9,"type":"term","title":"cloned","url":"/glossary/cloned","quote":"they called us and they say, hey, we'd like to do a used engine control module\n[484.6s] on this 16 KIA. Can you do that for us? And we can. And we cloned it.","canonicalId":"term:cloned","priority":0.55,"confidence":0.8,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"In ECU/ECM repair, “cloning” means transferring the original module’s calibration and configuration data to a replacement unit. This is often required so the car recognizes the replacement module and behaves like the original.","simplifiedExplanation":"Cloning means copying the car’s computer settings from the old module to a replacement one. That way the replacement can work correctly in the car."}},{"id":402943,"startTime":537.8,"endTime":583.0,"type":"term","title":"cam phasing","url":"/glossary/cam-phasing","quote":"Maybe it's something more dynamic than what you're understanding, meaning that maybe there's a double meaning to the code, or some performance aspect of the the motor or the cam phasing or not phasing will set this code.","canonicalId":"term:cam-phasing","priority":0.75,"confidence":0.88,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Cam phasing is the ability to change the camshaft’s timing relative to the crankshaft. Many modern engines use a cam phaser to advance or retard that timing for better power, emissions, and fuel economy.","simplifiedExplanation":"Cam phasing is how the engine adjusts when the camshaft opens the valves. Changing that timing can help the engine run better across different speeds and loads."}},{"id":402944,"startTime":657.1,"endTime":666.48,"type":"term","title":"H bridge style circuit","url":"/glossary/h-bridge-style-circuit","quote":"And obviously, it's a H bridge style circuit, kind of like a electric throttle motor where it can have ground on one side, power on the other,","canonicalId":"term:h-bridge-style-circuit","priority":0.7,"confidence":0.82,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"An H-bridge is an electronic switching circuit that can drive a motor in both directions by reversing polarity. The diagnostic implication is that the control module can command the actuator to move one way or the other, and you can observe different current directions.","simplifiedExplanation":"An H-bridge is electronics that can make a motor spin one way or the opposite way. In troubleshooting, it explains why current can flow in different directions depending on what the car is trying to do."}},{"id":402945,"startTime":697.2,"endTime":734.8,"type":"term","title":"key cycle","url":"/glossary/key-cycle","quote":"I was like, okay, the key cycle definitely has something to do with it. I don't know what that logic is exactly. But there's something there. So I tried just turning the key off and then turning the key back on. And I get this code.","canonicalId":"term:key-cycle","priority":0.7,"confidence":0.92,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"A key cycle is turning the ignition off and back on (sometimes without starting the engine) so the vehicle’s control modules re-run their self-checks. Many DTCs only set after the module sees the fault condition during these ignition-on checks, which is why the host can reproduce P0010 reliably with a key cycle.","simplifiedExplanation":"A key cycle means you turn the ignition off and then back on. The car’s computer re-checks sensors and circuits during that process, so some error codes only appear after you do it."}},{"id":402946,"startTime":714.5,"endTime":722.5,"type":"term","title":"open circuit","url":"/glossary/open-circuit","quote":"because this is a circuit code, right? This is by definition in what Kia's description of this code is an open circuit to the intake control motor","canonicalId":"term:open-circuit","priority":0.65,"confidence":0.9,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"An open circuit means there’s an interruption in an electrical path—like a broken wire, failed connector, or internal motor/driver issue—so current can’t flow as expected. The host emphasizes that Kia’s description of this code is specifically an open circuit to the intake control motor, which guides the diagnosis toward wiring/connector/motor electrical behavior.","simplifiedExplanation":"An open circuit means the electrical connection isn’t complete—current can’t flow the way it should. That usually points to wiring, a connector, or the motor itself rather than engine “timing.”"}},{"id":402947,"startTime":722.5,"endTime":729.3,"type":"term","title":"intake control motor","url":"/glossary/intake-control-motor","quote":"open circuit to the intake control motor, not a timing code, not a performance, not delayed operation, a circuit code.","canonicalId":"term:intake-control-motor","priority":0.6,"confidence":0.85,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"The intake control motor is an actuator that moves a mechanism in the intake system (often to change airflow path or runner position). When a DTC says there’s an open circuit to this motor, the diagnostic focus becomes whether the motor is being commanded and whether the electrical supply/return path is intact.","simplifiedExplanation":"The intake control motor is a small motor that moves something inside the intake system to control airflow. If the code says there’s an open circuit to it, the issue is likely electrical—like the wiring or the motor connection."}},{"id":402948,"startTime":823.3,"endTime":838.1,"type":"term","title":"code enable criteria","url":"/glossary/code-enable-criteria","quote":"So I did look a little closer at the code enable criteria and what actually sets this code. [831.8s] And sometimes there are codes like this, where there's more to it than just the definition of","canonicalId":"term:code-enable-criteria","priority":0.7,"confidence":0.9,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Code enable criteria are the specific conditions and logic the ECU uses to decide when a DTC is allowed to set. It’s more than the code’s name—manufacturers define exact thresholds, timing, and test behavior that must be met.","simplifiedExplanation":"Code enable criteria are the exact rules the car uses to decide when to turn on an error code. Even if a problem seems likely, the code won’t set unless those conditions are met."}},{"id":402949,"startTime":889.6,"endTime":906.1,"type":"term","title":"DTC","url":"/glossary/dtc","quote":"And so here's the deal. When you go into the code, you look at the DTC detecting condition. [897.3s] And this is right off of all data, you probably get it through Identifix or whatever service information you're using.","canonicalId":"term:dtc","priority":0.75,"confidence":0.95,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"DTC stands for Diagnostic Trouble Code. It’s the standardized code the car’s computer stores when it detects a fault that meets the manufacturer’s detection logic.","simplifiedExplanation":"DTC means a diagnostic trouble code. It’s the error code your car stores when it decides something is wrong based on its sensors and rules."}},{"id":402950,"startTime":906.1,"endTime":913.2,"type":"term","title":"electrical checks","url":"/glossary/electrical-checks","quote":"There's two cases that are under DTC strategy. Okay, and it says both of them, their electrical checks. [913.2s] Okay, so case one, I'm not going to read it verbatim, but essentially what it's saying is,","canonicalId":"term:electrical-checks","priority":0.45,"confidence":0.8,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Electrical checks are the ECU tests that validate electrical behavior—like current draw, voltage response, or circuit continuity—rather than directly measuring mechanical output. These checks are common in DTC strategies because they can quickly detect open/short/driver faults.","simplifiedExplanation":"Electrical checks are tests the car does to see if the wiring and electrical signals are behaving correctly. Instead of judging the mechanical result, it looks at things like current and voltage."}},{"id":402951,"startTime":913.2,"endTime":926.2,"type":"term","title":"pulse width modulation","url":"/glossary/pulse-width-modulation","quote":"Okay, so case one, I'm not going to read it verbatim, but essentially what it's saying is, [919.5s] after a certain pulse width modulation to the motor, it expects a certain amperage amount on the circuit.","canonicalId":"term:pulse-width-modulation","priority":0.6,"confidence":0.9,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Pulse width modulation (PWM) is a control method where the ECU rapidly switches a signal on and off, changing the “on” time to control power delivered to a component. In diagnostics, PWM is often referenced because the ECU expects a corresponding electrical response.","simplifiedExplanation":"Pulse width modulation (PWM) is how the car controls power by turning a signal on and off very fast. The “on” time changes how strongly the system is driven, and the computer expects certain electrical results."}},{"id":402952,"startTime":919.5,"endTime":926.2,"type":"term","title":"amperage","url":"/glossary/amperage","quote":"after a certain pulse width modulation to the motor, it expects a certain amperage amount on the circuit. [926.2s] Okay, so we commanded the circuit on.","canonicalId":"term:amperage","priority":0.55,"confidence":0.85,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Amperage is the electrical current measured in amps. For many DTCs, the ECU expects a specific current draw when it commands a circuit, so current that’s too high or too low can indicate a wiring, control, or component fault.","simplifiedExplanation":"Amperage is the amount of electrical current flowing in a circuit. The car may watch current draw to confirm the component is working correctly when it turns it on."}},{"id":402953,"startTime":1026.5,"endTime":1039.4,"type":"term","title":"ECVT","url":"/glossary/ecvt","quote":"It says the power stage of the ECVT motor is off. And then it's saying that the voltage\nafter the ECVT relay is between 10 and 16 volts,","canonicalId":"term:ecvt","priority":0.6,"confidence":0.55,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"ECVT here refers to the electric motor/actuator assembly being diagnosed, and the “power stage” language suggests the code is tied to the motor’s electrical control hardware. The host is describing how the diagnostic logic checks the circuit when the motor is off versus when it’s operating. This kind of split-state testing helps confirm whether the control electronics and wiring respond correctly.","simplifiedExplanation":"ECVT in this context is the name of the electric motor/actuator system the car is checking. The diagnostic looks at the electrical circuit in two situations: when the motor is off and when it’s running. That helps figure out whether the problem is in the control side or the wiring."}},{"id":402954,"startTime":1026.5,"endTime":1039.4,"type":"term","title":"power stage","url":"/glossary/power-stage","quote":"It says the power stage of the ECVT motor is off. And then it's saying that the voltage\nafter the ECVT relay is between 10 and 16 volts,","canonicalId":"term:power-stage","priority":0.55,"confidence":0.85,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"A power stage is the high-power electronic section that actually drives an electric motor/actuator—typically handling switching and current control. When the host says the power stage is “off,” they’re describing a state where the drive electronics should not be actively powering the motor. Diagnostics often compare expected voltage/current behavior in that off state versus an on/commanded state.","simplifiedExplanation":"The power stage is the part of the electronics that supplies power to the electric motor. When it’s “off,” the motor should not be actively driven. Testing the circuit in that off state helps confirm whether the electronics are behaving correctly."}},{"id":402955,"startTime":1149.2,"endTime":1154.56,"type":"term","title":"waveform","url":"/glossary/waveform","quote":"Now, if it is being operated, you'll see the voltage move. And they\nactually have a waveform of that. Now, if you unplug this, and this is something that they don't","canonicalId":"term:waveform","priority":0.45,"confidence":0.85,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"A waveform is a graph of how a signal changes over time—commonly used to interpret voltage or current behavior that a simple multimeter might miss. The host mentions that service information includes a waveform showing how voltage moves when the motor is operating. That helps confirm whether the control signal is switching correctly.","simplifiedExplanation":"A waveform is a picture of how voltage changes over time. Some problems only show up as a pattern, not a single number. Using the waveform helps you see whether the motor control signal is behaving normally."}},{"id":402956,"startTime":1184.2,"endTime":1188.6,"type":"term","title":"pulse with modulated driver","url":"/glossary/pulse-with-modulated-driver","quote":"And it's got a pulse with modulated driver to do it. So look for that when it's operating.","canonicalId":"term:pulse-with-modulated-driver","priority":0.75,"confidence":0.78,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"A pulse-width-modulated (PWM) driver switches power on and off very quickly to control how much energy the motor receives. That lets the control module command different motor speeds/forces without using a continuously variable power supply.","simplifiedExplanation":"The control system uses fast on/off pulses to control the motor. By changing how long the “on” part lasts, it can make the motor run harder or softer."}},{"id":402957,"startTime":1184.2,"endTime":1184.2,"type":"term","title":"power ground circuit","url":"/glossary/power-ground-circuit","quote":"It's a, you know, two wire power ground circuit that's pretty straightforward.","canonicalId":"term:power-ground-circuit","priority":0.7,"confidence":0.9,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"A power/ground circuit is the electrical path that supplies voltage to a component (power) and provides the return path (ground). Diagnostic checks often measure both sides to confirm the circuit is intact and that the control module is seeing expected voltage behavior.","simplifiedExplanation":"Think of it like an electrical “out and back” path: power goes to the motor, and ground is the return path. If either side is wrong, the motor may not work correctly."}},{"id":402958,"startTime":1216.7,"endTime":1222.9,"type":"term","title":"ECM","url":"/glossary/ecm","quote":"That means that this has a bias voltage that comes out of the ECM, goes through the motor, drops across the motor, comes back to the ECM","canonicalId":"term:ecm","priority":0.85,"confidence":0.95,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"ECM stands for Engine Control Module, the car’s main computer for engine-related control. In this diagnostic, the ECM applies a bias voltage and monitors the circuit’s voltage drop to verify the motor wiring and motor electrical integrity.","simplifiedExplanation":"The ECM is the car’s main computer. It sends signals to the motor and also checks whether the wiring and motor are electrically behaving as expected."}},{"id":402959,"startTime":1219.8,"endTime":1222.9,"type":"term","title":"bias voltage","url":"/glossary/bias-voltage","quote":"That means that this has a bias voltage that comes out of the ECM, goes through the motor, drops across the motor, comes back to the ECM","canonicalId":"term:bias-voltage","priority":0.7,"confidence":0.9,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Bias voltage is a small reference voltage applied to a circuit even when the ECM is not actively commanding the actuator. It allows the ECM to detect open/short conditions by checking the expected voltage drop across the motor.","simplifiedExplanation":"Bias voltage is a small “test” voltage the computer leaves on the circuit. It helps the computer confirm the wiring and motor are still connected correctly, even when the motor isn’t being commanded."}},{"id":402960,"startTime":1242.4,"endTime":1257.7,"type":"concept","title":"two cases","url":"/glossary/two-cases","quote":"So there's a two cases, we look at amperage when we're operating, if it's not there above a certain pulse with modulation, we said, hey, there's an open circuit.","canonicalId":"concept:two-cases","priority":0.6,"confidence":0.8,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"The host describes a two-step diagnostic strategy: (1) check current behavior while the motor is commanded/operating, and (2) check voltage behavior when the motor is not commanded using a bias voltage. This helps distinguish between control/drive issues and wiring/motor integrity issues.","simplifiedExplanation":"They’re using two different checks: one while the motor is actually being told to move, and another while it’s not. That way you can tell whether the problem is in the command/drive side or in the wiring/motor electrical side."}},{"id":402961,"startTime":1308.6,"endTime":1455.9,"type":"term","title":"relay","url":"/glossary/relay","quote":"there is also a relay that provides power to the ECM for this circuit to work. ... there's an ECVVT relay, which the ECM commands","canonicalId":"term:relay","priority":0.6,"confidence":0.9,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"A relay is an electrically operated switch. In automotive wiring, the ECM often controls a relay so high-current power can be delivered to a specific load (like a motor) without running that high current directly through the ECM.","simplifiedExplanation":"A relay is like an electrically controlled switch. The computer can turn it on/off, and then it lets power flow to the part that needs it."}},{"id":402962,"startTime":1377.3,"endTime":1388.2,"type":"term","title":"voltage drop","url":"/glossary/voltage-drop","quote":"And my first thought was, maybe this relay is not feeding the correct amount of power to this, maybe the volt, maybe there's a voltage drop was what I was kind of thinking.","canonicalId":"term:voltage-drop","priority":0.7,"confidence":0.95,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Voltage drop is the loss of electrical voltage across a component or connection under load. In diagnostics, checking for voltage drop helps determine whether a relay, connector, or wiring path is restricting power to the actuator/motor.","simplifiedExplanation":"Voltage drop means the voltage gets reduced as electricity travels through a wire or connection. If there’s too much drop, the motor may not get enough power to work correctly."}},{"id":402963,"startTime":1413.0,"endTime":1426.5,"type":"term","title":"scoping","url":"/glossary/scoping","quote":"So scoping that side, when I shut the key off, I can see the voltage drop off on the output side. But it does not drop, at least not totally on the relay side.","canonicalId":"term:scoping","priority":0.55,"confidence":0.7,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"In automotive diagnostics, “scoping” usually means using an oscilloscope to measure electrical waveforms in real time. It’s used here to compare how voltage changes on the relay input vs the output when the key is turned off.","simplifiedExplanation":"Scoping means using a test tool (an oscilloscope) to watch the electrical signal as it changes over time. It helps you see whether voltage drops when it should."}},{"id":402964,"startTime":1483.7,"endTime":1491.8,"type":"term","title":"fuses","url":"/glossary/fuses","quote":"And there's also two fuses that go to it between the relay and the ECM pull those still have power, I unplug the ECM, and I lose power there.","canonicalId":"term:fuses","priority":0.45,"confidence":0.85,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Fuses are protective devices that break the circuit if current becomes too high. In this diagnostic flow, the speaker checks fuses between the relay and the ECM to see whether power is still present on the supply side.","simplifiedExplanation":"Fuses are safety switches that protect wiring from overheating. If too much current flows, they blow and stop power to that circuit."}},{"id":402965,"startTime":1563.5,"endTime":1577.5,"type":"term","title":"intake actuator","url":"/glossary/intake-actuator","quote":"We didn't just chuck it at it really nearly like it had no output at all to the to the actual intake actuator.","canonicalId":"term:intake-actuator","priority":0.35,"confidence":0.75,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"An intake actuator is a device that moves or controls something in the engine’s intake system (for example, valves or flaps that affect airflow). The speaker says the original ECM had no output to the intake actuator, which is why the motor/control wasn’t being commanded.","simplifiedExplanation":"An intake actuator is a moving part that helps control airflow into the engine. If the computer can’t command it, the engine can’t get the right airflow."}},{"id":402966,"startTime":1610.8,"endTime":1625.26,"type":"term","title":"back feeding","url":"/glossary/back-feeding","quote":"But the ECM they got had a different problem. This one had power that was back feeding onto the input side after the key had been shut off.","canonicalId":"term:back-feeding","priority":0.6,"confidence":0.88,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Back feeding is when power unintentionally flows into a circuit from another source, instead of only flowing in the intended direction. Here, the replacement ECM has power on its input side after the key is off, indicating an abnormal electrical path.","simplifiedExplanation":"Back feeding means power is sneaking into a circuit from the wrong place. So even after you turn the key off, the computer or wiring still gets power when it shouldn’t."}},{"id":402967,"startTime":1645.4,"endTime":1657.7,"type":"term","title":"driver circuit","url":"/glossary/driver-circuit","quote":"And of course, a driver circuit for something that's pulling a lot of amperage is going to be susceptible to damage.","canonicalId":"term:driver-circuit","priority":0.7,"confidence":0.9,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"A driver circuit is the ECM’s output stage that supplies current to a component like an intake actuator. If the component draws high current, the driver can overheat or fail, which can then cause incorrect readings and diagnostic trouble codes.","simplifiedExplanation":"The “driver circuit” is the part of the car’s computer that powers a moving component. If that component pulls too much current, the computer’s output can get damaged."}}],"speakers":[{"id":"s1","name":"Sean Tipping","role":"host"}],"transcripts":[{"url":"http://getcarcurious.com/episodes/355-kia-2-4l-p0010-diagnostic/transcript.vtt","type":"text/vtt"}]}