{"version":"1.1.0","producer":"fm.getcarcurious","layer":"official","episode":{"title":"The Most Controversial Tool in Automotive Electrical Diagnostics [E245]","url":"http://getcarcurious.com/episodes/the-most-controversial-tool-in-automotive-electrical-diagnostics-e245","audioUrl":"https://episodes.captivate.fm/episode/b59e2177-627e-43b5-84c9-544b54b4c9e0.mp3","description":"Thanks to our Partners, Pico Technology, and AutelWatch Full Video EpisodePowered circuit testers tend to produce strong opinions. Some specialists consider them indispensable time-savers. Others see them as dangerous tools that make it far too easy to damage a circuit.In this episode, Matt examines where tools such as the Power Probe, Autel powered circuit tester, and metered test lights fit into an automotive diagnostic process. The ability to apply power or ground can be dangerous without an understanding of the circuit, but the same can be said of jumper wires, scan tools, oscilloscopes, and nearly every other useful diagnostic tool.Matt also opens the episode with thoughts on the unexpectedly short Conor McGregor and Max Holloway fight. Rather than focusing only on the disappointing result, he considers the discipline and preparation required to attempt something difficult, even when the attempt ultimately fails. That leads to a broader shop question: How should a leader respond when a capable employee puts in the work, takes on a difficult task, and still comes up short?In This EpisodeThe difference between a powered circuit tester and a metered test lightWhy Power Probe-style tools remain controversialThe risks of applying power or ground to an unknown circuitWhy Matt prefers the speed and simplicity of the Power Probe IIIUsing powered testers on motors, relays, power windows, and power seatsTesting fuel-pump power and ground circuitsUsing the tester’s circuit breaker to evaluate whether a circuit can carry currentWhy unloaded voltage readings can be misleadingThe value of placing a known load on a circuitWhy corrosion can pass a voltage test but fail under loadMatt’s experience with the Lisle and TOPDON metered test lightsWhy an incandescent test light is often more useful than an LED test lightThe difference between a dangerous tool and an improperly used toolKey TakeawaysA voltage reading does not necessarily prove that a circuit can perform useful work. A connection may show battery voltage through a meter and still fail when current is required.A metered test light can combine the speed of a traditional test light with an actual voltage reading and a known electrical load. Matt regularly uses this type of tester when checking fuses and evaluating circuit integrity.A powered circuit tester can also shorten the process of separating a failed component from a power-feed or ground problem. Matt describes using one at a fuel pump to verify the power side, ground side, and pump operation without repeatedly changing tools or building several different jumper-wire arrangements.The tool does make applying power or ground unusually easy. That convenience is precisely why the user needs to understand the circuit before pressing the switch.The Larger QuestionShould a tool be dismissed because it can cause damage in the wrong hands?A powered circuit tester can damage a circuit. A jumper wire can do the same. A scan tool can lead to expensive parts replacement when its information is misunderstood. The potential for misuse does not necessarily make the tool inappropriate. It may mean the specialist needs more knowledge before using it.Listener QuestionDo powered circuit testers belong in a professional diagnostic arsenal?Are they valuable time-savers, unnecessary risks, or a little of both? What version do you use, and where has it proven most useful?Mentioned in This EpisodePower Probe IIIPower Probe HookAutel powered circuit testerLisle metered test lightTOPDON TC001/CT100-style circuit testerIncandescent and LED test lightsFuel-pump circuit testingRelay and electric-motor testingThanks to our Partner, Pico TechnologyAre you chasing elusive automotive problems? Pico Technology empowers you to see what's really happening. Their PicoScope oscilloscopes transform your diagnostic capabilities. Visit PicoAuto.comThanks to our Partner, AutelFrom drivability diagnostics and TPMS service to ADAS and advanced safety systems, Autel helps technicians follow OEM procedures and repair with confidence. Learn more at Autel.comContact InformationEmail Matt: mattfanslowpodcast@gmail.comDiagnosing the Aftermarket A - Z YouTube ChannelThe Automotive Repair Podcast Network: https://automotiverepairpodcastnetwork.com/Remarkable Results Radio Podcast with Carm Capriotto: Advancing the Aftermarket by Facilitating Wisdom Through Story Telling and Open Discussion. https://remarkableresults.biz/Business by the Numbers with Hunt Demarest: Understand the Numbers of Your Business with CPA Hunt Demarest. https://huntdemarest.captivate.fm/The Auto Repair Marketing Podcast with Kim and Brian Walker: Marketing Experts Brian & Kim Walker Work with Shop Owners to Take it to the Next Level. https://autorepairmarketing.captivate.fm/The Weekly Blitz with Chris Cotton: Weekly Inspiration with Business Coach Chris Cotton from AutoFix - Auto Shop Coaching. https://chriscotton.captivate.fm/Speak Up! Effective Communication with Craig O'Neill: Develop Interpersonal and Professional Communication Skills when Speaking to Audiences of Any Size. https://craigoneill.captivate.fm/"},"annotations":[{"id":489893,"startTime":519.7,"endTime":527.0,"type":"term","title":"powered circuit testers","url":"/glossary/powered-circuit-testers","quote":"which I guess I want to kind of talk about circuit testers, powered circuit testers.\n[527.0s] The reason I use that word or verbiage is technically I think it's like","canonicalId":"term:powered-circuit-testers","priority":0.8,"confidence":0.88,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Powered circuit testers are circuit-testing tools that can apply or indicate power in a way that’s more than just passive checking. That added capability can make them faster for diagnostics, but it also increases the risk of shorting or damaging wiring if used incorrectly.","simplifiedExplanation":"A powered circuit tester is a tool that doesn’t just “look” at electricity—it can actively test circuits. Because it interacts with the circuit more directly, it can be riskier if you don’t use it carefully.","sourceStartTime":519.7,"sourceEndTime":527.0}},{"id":489894,"startTime":557.8,"endTime":561.3,"type":"term","title":"fused ones","quote":"We were using them, even fused ones.\n[561.3s] So power probes or circuit testers are fused as well.","canonicalId":"term:fused-ones","priority":0.45,"confidence":0.6,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Fused test leads or fused jumper wires include an inline fuse to reduce the chance of a hard short causing major damage. While fusing improves safety, it doesn’t make testing risk-free—incorrect connections can still cause problems.","simplifiedExplanation":"“Fused” means there’s a small safety fuse built into the wire. It helps protect against big electrical damage if something goes wrong, but you still need to connect things correctly.","sourceStartTime":557.8,"sourceEndTime":561.3}},{"id":489895,"startTime":572.3,"endTime":575.9,"type":"term","title":"logic probe","url":"/glossary/logic-probe","quote":"where there is kind of a logic probe, maybe has a meter in it,\n[575.9s] where there is kind of a logic probe, maybe has a meter in it,","canonicalId":"term:logic-probe","priority":0.65,"confidence":0.7,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"A logic probe is a type of electrical diagnostic tool that’s designed to interpret signal behavior rather than only measuring voltage. In automotive work, it’s often used to help identify whether a control signal is present and behaving correctly.","simplifiedExplanation":"A logic probe is a tester that helps you understand what a signal is doing, not just whether power is present. It’s used to check electronic control signals in cars.","sourceStartTime":572.3,"sourceEndTime":575.9}},{"id":489896,"startTime":580.4,"endTime":584.8,"type":"term","title":"throttle position switch","url":"/glossary/throttle-position-switch","quote":"has a switch, like a three position switch, if you will, [584.8s] that there's the neutral state and then one way is put 12 volt power","canonicalId":"term:three-position-switch","priority":0.55,"confidence":0.9,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"A three-position switch is a switch that can connect a circuit in three distinct states. In diagnostics, it’s often used to route power or ground to a test point depending on the selected position.","simplifiedExplanation":"A three-position switch is a switch with three settings. Each setting connects the circuit differently, which can help you test wiring by sending power or ground to a specific point.","sourceStartTime":580.4,"sourceEndTime":584.8}},{"id":489897,"startTime":584.8,"endTime":591.8,"type":"term","title":"12-volt power","url":"/glossary/12-volt-power","quote":"and then one way is put 12 volt power [591.8s] to the tip or go the other way and it grounds the tip.","canonicalId":"term:12-volt-power","priority":0.6,"confidence":0.85,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"“12 volt power” refers to the standard electrical supply used in most vehicles for powering sensors, modules, and test circuits. In electrical diagnostics, applying 12V is a common way to verify whether a component responds when commanded.","simplifiedExplanation":"Most cars use a 12-volt electrical system. When you apply 12 volts during testing, you’re checking whether a part reacts when it gets power.","sourceStartTime":584.8,"sourceEndTime":591.8}},{"id":489898,"startTime":591.8,"endTime":597.7,"type":"term","title":"grounds the tip","url":"/glossary/grounds-the-tip","quote":"to the tip or go the other way and it grounds the tip. [597.7s] That would be a powered circuit tester, maybe.","canonicalId":"term:grounds-the-tip","priority":0.6,"confidence":0.8,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"To “ground” a test point means connecting it to the vehicle’s electrical ground (the reference return path). Many diagnostic tools can either apply voltage or ground a probe tip to check circuit behavior.","simplifiedExplanation":"“Grounding” means connecting the test point to the car’s electrical return path. Diagnostic tools use this to see how a circuit behaves when it’s pulled to ground.","sourceStartTime":591.8,"sourceEndTime":597.7}},{"id":489899,"startTime":602.1,"endTime":607.4,"type":"term","title":"Electric and hybrid vehicles","url":"/glossary/electric-and-hybrid-vehicles","quote":"[602.1s] Electric and hybrid vehicles are here and with them a new era of diagnostics. [607.4s] Don't get left behind.","canonicalId":"term:electric-and-hybrid-vehicles","priority":0.75,"confidence":0.75,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Electric and hybrid vehicles use high-voltage electrical systems that change how faults must be diagnosed compared with traditional gasoline cars. Their control modules and power electronics often require specialized testing approaches and safety procedures.","sourceStartTime":602.1,"sourceEndTime":607.4}},{"id":489900,"startTime":609.2,"endTime":612.8,"type":"brand","title":"Pico Technologies EV diagnostic kits","url":"/glossary/pico-technologies-ev-diagnostic-kits","quote":"Don't get left behind. [609.2s] Pico Technologies EV diagnostic kits are your all in one solution [612.8s] to safely and efficiently service any electric or hybrid vehicle","canonicalId":"brand:pico-technologies-ev-diagnostic-kits","priority":0.25,"confidence":0.9,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Pico Technologies EV diagnostic kits are marketed as all-in-one tools for servicing electric and hybrid vehicles. The key idea is that they bundle EV-specific testing for high-voltage systems into a single workflow.","simplifiedExplanation":"Pico Technologies sells EV diagnostic kits designed for electric and hybrid cars. The point is to give technicians EV-focused testing tools in one package.","sourceStartTime":609.2,"sourceEndTime":612.8}},{"id":489901,"startTime":616.3,"endTime":620.0,"type":"term","title":"high voltage system analysis","url":"/glossary/high-voltage-system-analysis","quote":"from comprehensive high voltage system analysis and installation testing [620.0s] to guided step by step procedures.","canonicalId":"term:high-voltage-system-analysis","priority":0.7,"confidence":0.8,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"High voltage system analysis is the process of checking an EV’s high-voltage components (like battery, inverter, and related wiring) to find faults. It typically involves measuring electrical behavior safely and interpreting results to guide repairs.","simplifiedExplanation":"High voltage system analysis means testing the EV’s high-voltage parts to figure out what’s wrong. It’s about making safe measurements so you know what to repair.","sourceStartTime":616.3,"sourceEndTime":620.0}},{"id":489902,"startTime":618.2,"endTime":622.4,"type":"term","title":"installation testing","url":"/glossary/installation-testing","quote":"analysis and installation testing [620.0s] to guided step by step procedures. [622.4s] Pico puts the power of confident repairs","canonicalId":"term:installation-testing","priority":0.65,"confidence":0.75,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Installation testing refers to verifying that an EV high-voltage component was installed correctly and is operating safely after service. It’s commonly used to confirm insulation integrity, correct connections, and proper system readiness before returning the vehicle to service.","simplifiedExplanation":"Installation testing checks that a repaired or replaced EV high-voltage part was installed correctly. It helps confirm the system is safe to use before you hand the car back.","sourceStartTime":618.2,"sourceEndTime":622.4}},{"id":489903,"startTime":637.0,"endTime":641.3,"type":"company","title":"Autel","url":"/glossary/autel","quote":"This episode of diagnosing the aftermarket A to Z is brought to you by Autel. [641.3s] Autel is a global developer and manufacturer of award winning","canonicalId":"company:autel","priority":0.2,"confidence":0.95,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Autel is a company that develops and manufactures automotive diagnostic tools and service equipment. In the segment, it’s positioned as providing professional-grade diagnostics used by technicians and shop owners.","simplifiedExplanation":"Autel is a company that makes car diagnostic tools. They sell equipment that mechanics use to find problems in modern vehicles.","sourceStartTime":637.0,"sourceEndTime":641.3}},{"id":489904,"startTime":683.2,"endTime":690.5,"type":"term","title":"TPMS systems","url":"/glossary/tpms-systems","quote":"[683.2s] whether diagnosing complex drivability concerns, [686.3s] servicing TPMS systems, validating repairs or working with ADAS","canonicalId":"term:tpms-systems","priority":0.55,"confidence":0.9,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"TPMS (Tire Pressure Monitoring System) alerts the driver when a tire’s pressure is too low or otherwise out of spec. It uses sensors in the wheels and a dashboard warning to help prevent unsafe driving and tire damage.","simplifiedExplanation":"TPMS is the system that tells you when one of your tires is underinflated. It uses sensors in the tires and shows a warning light on the dashboard.","sourceStartTime":683.2,"sourceEndTime":690.5}},{"id":489905,"startTime":686.3,"endTime":690.5,"type":"term","title":"ADAS","url":"/glossary/adas","quote":"[686.3s] servicing TPMS systems, validating repairs or working with ADAS [690.5s] and advanced safety technologies.","canonicalId":"term:adas","priority":0.5,"confidence":0.9,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"ADAS (Advanced Driver-Assistance Systems) are the car’s safety and convenience technologies like lane-keeping, adaptive cruise, and automatic emergency braking. They often require calibration and careful diagnostics after repairs because sensors and cameras must be aligned and verified.","simplifiedExplanation":"ADAS stands for the car’s driver-assist safety features, like things that help you stay in the lane or brake automatically. After certain repairs, these systems may need to be checked or recalibrated.","sourceStartTime":686.3,"sourceEndTime":690.5}},{"id":489906,"startTime":737.7,"endTime":742.5,"type":"term","title":"voltmeter reading","url":"/glossary/volt-meter","quote":"[732.9s] where they have a lead and you can clip that onto power or grown. [737.7s] And then when you touch whatever circuit, it gives you a meter reading. [742.5s] and it might glow red or green, depending on if it's power feed or 12 volts there near 12 volts and then ground.","canonicalId":"term:voltmeter-reading","priority":0.6,"confidence":0.85,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"A voltmeter measures electrical potential difference (voltage) between two points in a circuit. In diagnostics, it helps confirm whether you have the expected power feed (often around 12 volts in many vehicles) and whether the circuit has a proper ground reference.","sourceStartTime":737.7,"sourceEndTime":742.5}},{"id":489907,"startTime":756.8,"endTime":764.6,"type":"term","title":"incandescent bulbs","url":"/glossary/incandescent-bulbs","quote":"[748.9s] The other thing is they usually have a button or both of them have a button. [752.7s] In these cases, the Lyle and the top done, they have a button on there. [756.8s] And inside they have some sort of bulb, if you will, an incandescent bulb, a load.","canonicalId":"term:incandescent-bulb","priority":0.65,"confidence":0.8,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"An incandescent bulb is a traditional resistive load used inside certain diagnostic testers. When connected to a circuit, it draws current so the technician can verify that the circuit can supply power under load, not just with a light/no-load measurement.","simplifiedExplanation":"An incandescent bulb can act like a controlled electrical “load” when it’s connected to a circuit. That lets you see if the circuit really has enough power to run something, not just show voltage on a meter.","sourceStartTime":756.8,"sourceEndTime":764.6}},{"id":489908,"startTime":756.8,"endTime":771.4,"type":"term","title":"load","url":"/glossary/load","quote":"[756.8s] And inside they have some sort of bulb, if you will, an incandescent bulb, a load. [764.6s] The Lyle is, I think they've rated that around 800 milliamps, something to that degree that is the load it will apply to the circuit.","canonicalId":"term:load","priority":0.6,"confidence":0.85,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"In electrical diagnostics, a load is an intentional electrical draw connected to a circuit to test its ability to deliver current. This is important because some faults only show up when the circuit is actually working under demand.","simplifiedExplanation":"A load is something that uses electricity on purpose while you test. It helps reveal problems that might not show up if you only measure voltage with no real draw.","sourceStartTime":756.8,"sourceEndTime":771.4}},{"id":489909,"startTime":764.6,"endTime":771.4,"type":"term","title":"800 milliamps","url":"/glossary/800-milliamps","quote":"[764.6s] The Lyle is, I think they've rated that around 800 milliamps, something to that [771.4s] degree that is the load it will apply to the circuit.","canonicalId":"term:800-milliamps","priority":0.45,"confidence":0.8,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Milliamps (mA) are a unit of electrical current. Stating that a tester applies around 800 milliamps describes how much current the diagnostic load draws, which affects how well it can expose weak power circuits.","simplifiedExplanation":"Milliamps are a measure of how much current is flowing. Saying “800 milliamps” tells you how strongly the tester loads the circuit to check if the power supply can handle it.","sourceStartTime":764.6,"sourceEndTime":771.4}},{"id":489910,"startTime":775.9,"endTime":782.4,"type":"term","title":"1.2 amps","url":"/glossary/1-2-amps","quote":"[775.9s] And the top down I want to say is like up to just over an amp, like 1.2 [782.4s] amps, something like that. [784.0s] I like both of them.","canonicalId":"term:1-2-amps","priority":0.45,"confidence":0.8,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Amps are a unit of electrical current, and 1.2 amps indicates a higher current load than the ~800 mA example. In diagnostics, the current level matters because different faults appear only when the circuit is stressed more heavily.","simplifiedExplanation":"Amps measure how much current is flowing. “1.2 amps” means the tester draws a stronger electrical load, which can help reveal power problems that a lighter test might miss.","sourceStartTime":775.9,"sourceEndTime":782.4}},{"id":489911,"startTime":953.3,"endTime":967.7,"type":"term","title":"power ground","url":"/glossary/power-ground","quote":"And then depending on what I'm doing, applying power or ground,\ntesting power windows, man, that's so great.","canonicalId":"term:power-or-ground","priority":0.5,"confidence":0.8,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"In automotive electrical diagnostics, “power” and “ground” are the two sides of a circuit: power provides the voltage source, while ground is the return path to the battery. Applying or checking both lets you isolate whether a component is missing supply, missing return, or failing internally.","simplifiedExplanation":"Cars run on electricity that needs both a power side and a ground side. If you test both, you can tell whether the problem is that the part isn’t getting power or isn’t getting a proper return path.","sourceStartTime":953.3,"sourceEndTime":967.7}},{"id":489912,"startTime":964.1,"endTime":967.7,"type":"term","title":"power windows","url":"/glossary/power-windows","quote":"And then depending on what I'm doing, applying power or ground,\ntesting power windows, man, that's so great.","canonicalId":"term:power-windows","priority":0.45,"confidence":0.7,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Power windows are electrically operated window regulators controlled by switches and typically a relay and/or control module. They’re a common diagnostic target because you can test supply, ground, and switching behavior by observing whether the motor responds.","simplifiedExplanation":"Power windows are windows that move using an electric motor instead of a manual crank. They’re often used for electrical testing because the wiring and switches are easy to check.","sourceStartTime":964.1,"sourceEndTime":967.7}},{"id":489913,"startTime":967.7,"endTime":974.1,"type":"term","title":"relays","url":"/glossary/relays","quote":"Testing relays, I can apply power, ground, both if I want.\nThere's a kind of an alligator nearby that's ground all the time.","canonicalId":"term:relays","priority":0.5,"confidence":0.85,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Relays are electrically controlled switches that route power to a higher-current load (like a motor) using a smaller control signal. In diagnostics, testing relays helps determine whether the circuit is failing at the switching stage or downstream at the component.","simplifiedExplanation":"A relay is like an electrically controlled switch. It lets a small signal turn on a bigger electrical load, and testing it helps you find out where the problem is.","sourceStartTime":967.7,"sourceEndTime":974.1}},{"id":489914,"startTime":974.1,"endTime":977.7,"type":"term","title":"electric motor","url":"/glossary/electric-motor","quote":"I can flip flap directions for testing electric motors or, you know, power seats.\nIs there danger? Yeah, just like I said, though, jumper wires, there's danger.","canonicalId":"term:electric-motors","priority":0.45,"confidence":0.75,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Electric motors convert electrical energy into mechanical motion, and in cars they’re used for functions like window regulators and seat adjustments. Diagnostic tools that can apply power and ground help verify whether the motor itself is working or whether the issue is in the control/switching.","simplifiedExplanation":"An electric motor is the part that turns electrical energy into movement. If you can power it directly and it still doesn’t run, the motor (or its connections) is likely the problem.","sourceStartTime":974.1,"sourceEndTime":977.7}},{"id":489915,"startTime":974.1,"endTime":977.7,"type":"term","title":"power seats","url":"/glossary/power-seats","quote":"I can flip flap directions for testing electric motors or, you know, power seats.\nIs there danger? Yeah, just like I said, though, jumper wires, there's danger.","canonicalId":"term:power-seats","priority":0.4,"confidence":0.7,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Power seats use electric motors and a control system to move the seat and sometimes adjust lumbar support. They’re often diagnosed by checking whether the motors receive correct power/ground and whether the switching logic is functioning.","simplifiedExplanation":"Power seats are seats that adjust using electric motors. If they don’t move, testing the electrical supply and ground to the motors can help pinpoint the fault.","sourceStartTime":974.1,"sourceEndTime":977.7}},{"id":489916,"startTime":985.2,"endTime":989.3,"type":"term","title":"jumper wires","url":"/glossary/jumper-wires","quote":"Is there danger? Yeah, just like I said, though, jumper wires, there's danger.\nYou touch the wrong circuit with a jumper wire, you're smoking something.","canonicalId":"term:jumper-wires","priority":0.6,"confidence":0.9,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Jumper wires are temporary leads used to connect circuits during testing, such as applying power/ground to a component. They can be risky because touching the wrong circuit can short something out or damage electronics, which is why proper identification and fusing matter.","simplifiedExplanation":"Jumper wires are temporary wires you use to connect two points to test a circuit. If you connect them to the wrong place, you can cause a short and damage parts of the car’s electrical system.","sourceStartTime":985.2,"sourceEndTime":989.3}},{"id":489917,"startTime":993.88,"endTime":1073.76,"type":"term","title":"Power Probe","url":"/glossary/power-probe","quote":"No different than a power probe.\nPower probe makes it a little too easy, but I don't know.\nIf you understand what it's doing, there's such a time saver.","canonicalId":"term:power-probe","priority":0.85,"confidence":0.92,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"A power probe is a handheld automotive electrical diagnostic tool that lets you quickly apply power and/or ground to a specific circuit. It’s often used to test whether a component (like a fuel pump) responds when commanded, without guessing or back-probing blindly.","simplifiedExplanation":"A power probe is a tester that lets you send electricity to a specific wire or connector. Instead of guessing, you can “command” a part to see if it works, which speeds up diagnosing electrical problems.","sourceStartTime":993.88,"sourceEndTime":1073.76}},{"id":489918,"startTime":1004.7,"endTime":1012.1,"type":"term","title":"positive and negative","url":"/glossary/positive-and-negative","quote":"And the long lead to go right to battery, you know, positive and negative.\nNow you're checking all over the car.\nAnd depending on the circuit, you can load test.","canonicalId":"term:positive-and-negative","priority":0.55,"confidence":0.8,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"In automotive diagnostics, “positive and negative” refer to the two sides of the 12-volt electrical system: battery positive and chassis/ground negative. Using both polarities helps verify whether a circuit has power and whether the ground path is intact.","simplifiedExplanation":"Cars run on a 12-volt system with two sides: the positive side and the ground (negative) side. Testing both helps you figure out whether the problem is power coming in or the return path back to ground.","sourceStartTime":1004.7,"sourceEndTime":1012.1}},{"id":489919,"startTime":1020.8,"endTime":1024.3,"type":"term","title":"crank, no start","url":"/glossary/crank-no-start-01a8283f-f4df-4adb-bdb5-c6857a432e12","quote":"I mean, it's not fictitious because I do it, but just as an example,\nI have a crank, no start, no fuel pressure.\nI'm at the fuel pump.","canonicalId":"term:crank-no-start","priority":0.7,"confidence":0.9,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"“Crank, no start” describes a condition where the engine cranks on the starter but does not start running. It often points to issues like fuel delivery, ignition, or sensor/control problems rather than a dead battery.","simplifiedExplanation":"“Crank, no start” means the starter spins the engine, but the engine won’t actually fire. The fix usually involves checking things like fuel and spark, not just the battery.","sourceStartTime":1020.8,"sourceEndTime":1024.3}},{"id":489920,"startTime":1020.8,"endTime":1024.3,"type":"term","title":"fuel pressure","url":"/glossary/fuel-pressure","quote":"I have a crank, no start, no fuel pressure.\nI'm at the fuel pump.\nI got my power probe, power feeding ground right there.","canonicalId":"term:fuel-pressure","priority":0.65,"confidence":0.88,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Fuel pressure is the amount of pressure the fuel system generates to deliver fuel to the engine. If fuel pressure is missing or too low, the engine may crank but won’t start, even if the starter and battery are fine.","simplifiedExplanation":"Fuel pressure is how strongly the fuel system pushes gas to the engine. If there isn’t enough pressure, the engine may crank but never start.","sourceStartTime":1020.8,"sourceEndTime":1024.3}},{"id":489921,"startTime":1024.3,"endTime":1038.3,"type":"term","title":"fuel pump","url":"/glossary/fuel-pump","quote":"I'm at the fuel pump.\nI got my power probe, power feeding ground right there.\nAt a flip of switch, I can apply power.","canonicalId":"term:fuel-pump","priority":0.75,"confidence":0.9,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"The fuel pump is the component that pressurizes fuel so it can be delivered to the engine’s fuel rail/injectors. In a crank/no-start scenario, testing whether the pump runs when commanded can quickly separate an electrical control problem from a failed pump.","simplifiedExplanation":"The fuel pump is what sends fuel to the engine under pressure. If the engine won’t start, checking whether the fuel pump can run when you command it helps you find whether the problem is electrical or the pump itself.","sourceStartTime":1024.3,"sourceEndTime":1038.3}},{"id":489922,"startTime":1038.3,"endTime":1042.9,"type":"term","title":"12 volts","url":"/glossary/12-volts","quote":"Be getting 12 volts there.\nPut my power probe on there, see 12 volts.\nBut if something's messed up with the motor where it's not drawing,","canonicalId":"term:12-volts","priority":0.6,"confidence":0.84,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"“12 volts” refers to the nominal voltage of a typical automotive electrical system powered by a 12-volt battery. Measuring for 12 volts at a connector helps confirm whether the circuit is supplying power.","simplifiedExplanation":"Most cars use a 12-volt electrical system. If you’re testing a wire or connector and you don’t see the expected 12 volts, that’s a clue the circuit isn’t getting power.","sourceStartTime":1038.3,"sourceEndTime":1042.9}},{"id":489923,"startTime":1042.9,"endTime":1050.9,"type":"term","title":"internally high resistance","url":"/glossary/internally-high-resistance","quote":"But if something's messed up with the motor where it's not drawing,\nyou know, internally open, internally high resistance,\nI apply ground to there.","canonicalId":"term:internally-high-resistance","priority":0.5,"confidence":0.78,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"“Internally high resistance” describes a failure inside a component (like a motor) where current can’t flow normally. Even if power is present, the component may not draw enough current to operate, causing symptoms like no fuel pressure.","sourceStartTime":1042.9,"sourceEndTime":1050.9}},{"id":489924,"startTime":1054.7,"endTime":1066.7,"type":"term","title":"resettable circuit breaker","url":"/glossary/resettable-circuit-breaker","quote":"I think the power probe three, I think is around eight amps,\nresettable circuit breaker, it pops.\nI'll do it again, reset it, do it again, reset it, do it again.","canonicalId":"term:resettable-circuit-breaker","priority":0.5,"confidence":0.86,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"A resettable circuit breaker is a protective device that limits current and trips when too much current flows. In a power probe, it helps prevent damage by cutting off output when a circuit draws more than the tool’s safe limit.","simplifiedExplanation":"A resettable circuit breaker is a safety feature that shuts off power if too much current is drawn. After it trips, you can reset it and try again, which helps protect the tool and wiring.","sourceStartTime":1054.7,"sourceEndTime":1066.7}},{"id":489925,"startTime":1076.0,"endTime":1078.3,"type":"term","title":"circuit integrity","url":"/glossary/circuit-integrity","quote":"I probably have a good enough circuit integrity. Probably a bad fuel pump.","canonicalId":"term:circuit-integrity","priority":0.55,"confidence":0.86,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Circuit integrity is a check that the wiring, connectors, and electrical paths are intact and behaving correctly (not open, shorted, or high-resistance). In diagnostics, it helps confirm whether an electrical fault is in the circuit itself before replacing parts.","simplifiedExplanation":"Circuit integrity means the car’s wiring and connections are healthy. If the circuit is damaged or has a bad connection, the car may act like a part is broken even when it isn’t.","sourceStartTime":1076.0,"sourceEndTime":1078.3}},{"id":489926,"startTime":1094.4,"endTime":1099.6,"type":"term","title":"scan tool","url":"/glossary/scan-tool","quote":"In the wrong hands, a scan tool can be extraordinarily expensive with parts being replaced that aren't bad,","canonicalId":"term:scan-tool","priority":0.75,"confidence":0.9,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"A scan tool is a diagnostic device that reads information from a vehicle’s onboard computers. It can pull trouble codes and live data, but the host is warning that using it without understanding can lead to expensive misdiagnoses and unnecessary parts replacement.","simplifiedExplanation":"A scan tool is a gadget that talks to the car’s computer to find problems. It can be very helpful, but if you don’t interpret the results correctly, you can end up replacing the wrong parts.","sourceStartTime":1094.4,"sourceEndTime":1099.6}},{"id":489927,"startTime":1104.0,"endTime":1111.7,"type":"term","title":"DTC","url":"/glossary/dtc","quote":"be it DTC is essentially leading to a part number. You know, not that they actually spit out a part number, but you see","canonicalId":"term:dtc","priority":0.7,"confidence":0.88,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"DTC stands for Diagnostic Trouble Code, a code stored by the vehicle when a control module detects an abnormal condition. The key point here is that DTCs often indicate a symptom or circuit issue, and they can be misused as if they directly identify a single failed part.","simplifiedExplanation":"DTC means the car’s computer saved a trouble code. The code helps point you in the right direction, but it doesn’t always mean the part you’re thinking of is definitely the one that’s bad.","sourceStartTime":1104.0,"sourceEndTime":1111.7}},{"id":489928,"startTime":1119.3,"endTime":1124.0,"type":"concept","title":"misinterpreting scan data","url":"/glossary/misinterpreting-scan-data","quote":"That could be a very expensive misuse of the tool or looking at scan data and misinterpreting it leads to parts replacement.","canonicalId":"concept:misinterpreting-scan-data","priority":0.6,"confidence":0.8,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Misinterpreting scan data is when a technician reads trouble codes or live sensor values but draws the wrong conclusion about what failed. The episode frames this as a major cause of “parts cannon” behavior—replacing components that aren’t actually defective.","simplifiedExplanation":"Misinterpreting scan data means reading the car’s computer info and guessing wrong about the cause. That can lead to replacing parts that were never the real problem.","sourceStartTime":1119.3,"sourceEndTime":1124.0}},{"id":489929,"startTime":1145.5,"endTime":1150.1,"type":"concept","title":"brick modules","quote":"where it's possible brick modules, I suppose, with misuse. But the reality is in the wrong hands, there's a lot of things that can do damage.","canonicalId":"concept:brick-modules","priority":0.45,"confidence":0.62,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"“Brick modules” refers to damaging or corrupting a vehicle control module so it becomes unusable, like a “dead” computer. The host suggests that while it’s possible in theory with misuse, it’s not the typical outcome—most damage risk comes from wrong diagnosis and unnecessary repairs.","simplifiedExplanation":"“Brick modules” means ruining a car computer module so it won’t work anymore. The host is saying that’s possible with extreme misuse, but most of the time the bigger problem is replacing the wrong parts.","sourceStartTime":1145.5,"sourceEndTime":1150.1}},{"id":489930,"startTime":1188.9,"endTime":1192.6,"type":"term","title":"FAFO","url":"/glossary/fafo","quote":"And then I find out, yeah, FAFO.\nAuto makes a powered circuit tester.","canonicalId":"term:fafo","priority":0.25,"confidence":0.7,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"FAFO is an acronym meaning “f*** around and find out,” used to describe learning consequences through experience. In the context of electrical diagnostics, the host is joking that using a tool without caution can lead to real-world problems you only discover after the fact.","simplifiedExplanation":"FAFO is slang that means “mess around and then you’ll find out what happens.” The host is basically saying you should be careful, because actions can have consequences.","sourceStartTime":1188.9,"sourceEndTime":1192.6}},{"id":489931,"startTime":1199.1,"endTime":1201.5,"type":"brand","title":"Snap-On","url":"/glossary/snap-on","quote":"I think there's a bunch of them now.\nThe markets getting flooded, the snap on one.\nI do not like the design.","canonicalId":"brand:snap-on","priority":0.35,"confidence":0.9,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Snap-on is a well-known automotive tool brand, especially popular with professional technicians for diagnostic and electrical testing equipment. When the host mentions a “Snap-on one,” they’re pointing to a specific manufacturer’s version of the circuit-testing tool category.","simplifiedExplanation":"Snap-on is a company that makes tools that mechanics use every day. The host is comparing Snap-on’s version of this kind of electrical tester to others.","sourceStartTime":1199.1,"sourceEndTime":1201.5}},{"id":489932,"startTime":1240.0,"endTime":1244.3,"type":"term","title":"test light","url":"/glossary/test-light","quote":"[1240.0s] test lights, namely Lyle and top down are the ones I'm aware of.\n[1244.3s] I'm a big fan. I'm a really big fan.","canonicalId":"term:test-lights","priority":0.35,"confidence":0.7,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"Test lights are simple automotive electrical diagnostic tools used to check for voltage on a wire. They typically use a bulb/LED to indicate whether the circuit is energized, which is useful for quick “is power present?” checks.","sourceStartTime":1240.0,"sourceEndTime":1244.3}},{"id":489933,"startTime":1270.7,"endTime":1273.0,"type":"term","title":"LED thing","quote":"The just the LED thing doesn't work for me.\n[1273.0s] I want to see numbers.\n[1274.4s] When they put the numbers in the display, that became that became","canonicalId":"term:led-thing","priority":0.3,"confidence":0.62,"source":"hybrid-fuzzy+gpt-5.4-nano","data":{"explanation":"In this context, “LED thing” refers to a basic test light that uses an LED indicator rather than showing numeric measurements. LED-only testers are often limited to pass/fail style feedback, which can be less helpful when you need to see exact voltage values.","simplifiedExplanation":"They’re talking about a simple tester that just has an LED that turns on or off. It doesn’t show numbers, so it can be harder to diagnose issues that depend on exact voltage.","sourceStartTime":1270.7,"sourceEndTime":1273.0}}],"speakers":[{"id":"s1","name":"Matt Fanslow","role":"host"}],"transcripts":[{"url":"http://getcarcurious.com/episodes/the-most-controversial-tool-in-automotive-electrical-diagnostics-e245/transcript.vtt","type":"text/vtt"}],"alignmentMode":"scalar","fallbackOffset":0.0}