{"product_id":"jdiag-p100-circuit-system-tester-bilar-lastbilar","title":"JDiag Power Pro P100 – advanced circuit tester for car \u0026 truck","description":"\u003cdiv class=\"product-page\"\u003e\n\u003ch2\u003eJDiag Power Pro P100 – advanced circuit tester for cars \u0026amp; trucks (0–70V) with color screen, component activation, AC signal test \u0026amp; built-in circuit breaker\u003c\/h2\u003e\n\u003c!-- SHORT VERSION 200–300 WORDS --\u003e\n\u003csection id=\"kortversion\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eJDiag Power Pro P100\u003c\/strong\u003e is a powerful \u003cstrong\u003eautomotive circuit system tester\u003c\/strong\u003e (power probe\/circuit tester) for those who want to troubleshoot vehicle electrical systems faster and more methodically – whether you work with \u003cstrong\u003epassenger cars\u003c\/strong\u003e or \u003cstrong\u003etrucks\u003c\/strong\u003e. It covers an extra wide voltage range of \u003cstrong\u003e0–70V\u003c\/strong\u003e (according to product data) and has a clear \u003cstrong\u003e3.2\" TFT color screen\u003c\/strong\u003e (160 × 128 dpi) that displays measurements and status directly.\u003c\/p\u003e\n\u003cp\u003eThe P100 combines several tools in one: you can perform \u003cstrong\u003evoltage \u0026amp; polarity tests\u003c\/strong\u003e (quickly see DC\/AC and positive\/negative), \u003cstrong\u003eresistance and continuity tests\u003c\/strong\u003e (value shown on screen), \u003cstrong\u003eAC circuit\/signal tests\u003c\/strong\u003e for quick troubleshooting in sensor circuits, and \u003cstrong\u003eactivate components\u003c\/strong\u003e in hand, in the vehicle, or via ground (according to the features list). It also helps to \u003cstrong\u003efind bad ground points\u003c\/strong\u003e and \u003cstrong\u003elocate short circuits\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eFor working with trailer and lighting systems, support for \u003cstrong\u003etesting trailer lights and connections\u003c\/strong\u003e is included, and the tool mentions a \u003cstrong\u003e10-meter extension cable\u003c\/strong\u003e to make testing both cars and trucks more convenient. The P100 also has a \u003cstrong\u003ebuilt-in circuit breaker\u003c\/strong\u003e (1–10A) with defined tripping times according to test standards, which increases control when working with unknown circuits.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 0–70V (DC-range 0–65V + 1 digit according to test spec)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScreen:\u003c\/strong\u003e 3.2\" TFT color (160×128)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunctions:\u003c\/strong\u003e DC\/AC + polarity, resistance\/continuity, AC signal test, component activation, trailer test, ground\/short circuit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower supply:\u003c\/strong\u003e via 12V or 24V vehicle battery\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLanguage:\u003c\/strong\u003e English\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003chr\u003e\n\u003csection id=\"innehall\"\u003e\n\u003ch2\u003eContents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"#vad-ar\"\u003eWhat is JDiag P100 and when is it used?\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#funktioner\"\u003eFeatures – what they mean in practice\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#specifikationer\"\u003eSpecifications\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#brytare\"\u003eBuilt-in circuit breaker \u0026amp; test standard\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#manual\"\u003eStep-by-step guide: how to use the P100\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#scenarier\"\u003eCommon troubleshooting scenarios\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#faq\"\u003eFAQ\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#notiser\"\u003eNotices \u0026amp; disclaimer\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003chr\u003e\n\u003csection id=\"vad-ar\"\u003e\n\u003ch2\u003eWhat is JDiag P100 and when is it used?\u003c\/h2\u003e\n\u003cp\u003eThe JDiag Power Pro P100 is a tool for \u003cstrong\u003etroubleshooting vehicle electrical circuits\u003c\/strong\u003e that makes it easier to quickly determine: is there voltage? is the polarity correct? is the ground good? is there an interruption? can the component be activated? It is particularly useful when working with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003elighting, relays, fuses, and power supply failures\u003c\/li\u003e\n\u003cli\u003esensors and signal problems (AC signal test according to the features list)\u003c\/li\u003e\n\u003cli\u003etrailer connectors and lighting (with 10 m extension cable according to description)\u003c\/li\u003e\n\u003cli\u003eintermittent faults due to loose ground or short circuits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt can be used both in the workshop and in the field, and is designed to work on systems powered by a \u003cstrong\u003e12V or 24V battery\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003chr\u003e\n\u003csection id=\"funktioner\"\u003e\n\u003ch2\u003eFeatures – what they mean in practice\u003c\/h2\u003e\n\u003ch3\u003e1) Voltage \u0026amp; polarity (DC\/AC + positive\/negative)\u003c\/h3\u003e\n\u003cp\u003eQuickly identify if you have \u003cstrong\u003evoltage\u003c\/strong\u003e, whether it is \u003cstrong\u003eDC or AC\u003c\/strong\u003e, and if the point is \u003cstrong\u003epositive\/negative\u003c\/strong\u003e. Perfect for troubleshooting connectors, fuses, and aftermarket equipment.\u003c\/p\u003e\n\u003ch3\u003e2) Resistance and continuity test (value shown on screen)\u003c\/h3\u003e\n\u003cp\u003eThe P100 can display the \u003cstrong\u003eresistance value\u003c\/strong\u003e on the LCD\/TFT screen and help you find interruptions, bad contacts, or cable breaks.\u003c\/p\u003e\n\u003ch3\u003e3) AC circuit\/signal test\u003c\/h3\u003e\n\u003cp\u003eDesigned to more quickly troubleshoot \u003cstrong\u003esensor circuits\u003c\/strong\u003e and signal problems when you suspect the fault is not \"no power\" but rather a missing or unstable signal.\u003c\/p\u003e\n\u003ch3\u003e4) Component activation\u003c\/h3\u003e\n\u003cp\u003eTest components by activating them \"in hand,\" in the vehicle, or via ground (according to the feature description). This is especially useful for distinguishing between a \u003cem\u003efaulty component\u003c\/em\u003e and a \u003cem\u003efault in control\/wiring\u003c\/em\u003e.\u003c\/p\u003e\n\u003ch3\u003e5) Trailer light and connection test (10 m extension)\u003c\/h3\u003e\n\u003cp\u003eWith a \u003cstrong\u003e10 m extension cable\u003c\/strong\u003e (according to product text), it becomes easier to test lighting and connections on cars\/trucks and trailers without having to move the tool constantly.\u003c\/p\u003e\n\u003ch3\u003e6) Checking for bad ground \u0026amp; locating short circuits\u003c\/h3\u003e\n\u003cp\u003eA bad ground often causes \"ghost faults\" – the P100 is designed to help you find bad ground points and trace short circuits in circuits.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003chr\u003e\n\u003csection id=\"specifikationer\"\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ch3\u003eGeneral\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eProduct Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eJDiag P100 Automotive Electrical Circuit System Tester\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eDisplay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e3.2\" TFT color screen, 160 × 128 dpi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eVoltage (stated)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e0–70V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eLanguage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eEnglish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eExternal power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e12V or 24V via vehicle battery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e165 × 40 × 27 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eTest Tool Specifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eDC voltage range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e0–65V (+1 digit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eResistance range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e0–200 kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eFrequency response (tone pass through)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e0 Hz to 10 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eCircuit breaker\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e1–10 Amp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eTemperature\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating temperature:\u003c\/strong\u003e 0 to 60°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage temperature:\u003c\/strong\u003e -40 to 70°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e The documentation contains both \"0–70V\" and \"DC voltage range 0–65V +1 digit\". This may be because 70V refers to a max\/range in marketing, while the test specification indicates the measurement range for DC with resolution.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003chr\u003e\n\u003csection id=\"brytare\"\u003e\n\u003ch2\u003eBuilt-in circuit breaker \u0026amp; test standard (trip times)\u003c\/h2\u003e\n\u003cp\u003eThe P100 has a built-in \u003cstrong\u003ecircuit breaker\u003c\/strong\u003e (1–10A) and a specified test standard for trip times in case of overcurrent:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% current:\u003c\/strong\u003e no tripping\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e150% current:\u003c\/strong\u003e tripping within 1 hour\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e200% current:\u003c\/strong\u003e tripping within 3–30 seconds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e300% current:\u003c\/strong\u003e tripping within 0.5–4.0 seconds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis provides a clear, predictable protection function when working with unknown circuits and wanting better control over load during testing.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003chr\u003e\n\u003csection id=\"manual\"\u003e\n\u003ch2\u003eStep-by-step guide: how to use the JDiag P100\u003c\/h2\u003e\n\u003ch3\u003ePreparation\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWork methodically and preferably use a wiring diagram for the current circuit.\u003c\/li\u003e\n\u003cli\u003eEnsure that the battery and connections are in good condition.\u003c\/li\u003e\n\u003cli\u003eIf you are going to activate components: always start by measuring, not powering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e1) Connect to power (12V\/24V)\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eConnect the tool to the vehicle's battery (12V or 24V as per specification).\u003c\/li\u003e\n\u003cli\u003eCheck that the unit starts and that the screen displays the correct status.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003e2) Voltage and polarity test\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003ePlace the test probe on the point you want to test (connector, fuse, cable end).\u003c\/li\u003e\n\u003cli\u003eRead the voltage and polarity (plus\/minus) on the screen.\u003c\/li\u003e\n\u003cli\u003eIf troubleshooting an AC signal: use AC mode as needed.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003e3) Continuity and resistance\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003ePerform continuity\/resistance measurement when the circuit is suitable for it (often de-energized depending on the test).\u003c\/li\u003e\n\u003cli\u003eRead the value on the screen and identify interruptions or abnormal resistance.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003e4) Check ground \u0026amp; search for short circuits\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eTest ground points to find poor contact\/oxidation\/paint.\u003c\/li\u003e\n\u003cli\u003eIf fuses blow: work from the supply side towards the load and look for where the voltage \"disappears\" or where the circuit grounds incorrectly.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003e5) Activate components (with caution)\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eIdentify exactly what you are going to activate (relay coil, solenoid, motor, etc.) and which pins are correct.\u003c\/li\u003e\n\u003cli\u003eActivate and observe the response. If the component works during activation but not in operation, it often indicates a control\/wiring problem.\u003c\/li\u003e\n\u003cli\u003eStop if you see signs of overload – the circuit breaker is for protection but does not replace correct methodology.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003e6) Trailer\/lighting test with 10 m extension\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eUse the extension cable to reach the trailer connection and lights without moving the tool constantly.\u003c\/li\u003e\n\u003cli\u003eTest power supply, ground, and signals for each function (turn signal, brake, tail, fog, etc.).\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eTip:\u003c\/strong\u003e Document measurement results and work \"from the source to the load.\" This saves time and reduces the risk of chasing errors in the wrong place.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003chr\u003e\n\u003csection id=\"scenarier\"\u003e\n\u003ch2\u003eCommon troubleshooting scenarios\u003c\/h2\u003e\n\u003ch3\u003eScenario A: \"Nothing happens\" when a component should activate\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIs there voltage up to the relay\/fuse?\u003c\/li\u003e\n\u003cli\u003eIs the ground point good?\u003c\/li\u003e\n\u003cli\u003eActivate the component directly (if appropriate) to confirm it works.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eScenario B: Sensor problems and unstable signal\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCheck power supply and ground first.\u003c\/li\u003e\n\u003cli\u003eUse the AC signal test to quickly get an indication of a signal-related fault (according to the features list).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eScenario C: Fuse blows \/ suspected short circuit\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIsolate sections: disconnect consumers and connectors gradually.\u003c\/li\u003e\n\u003cli\u003eTrace where the fault disappears\/occurs and check for chafed spots in the wiring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003chr\u003e\n\u003csection id=\"faq\"\u003e\n\u003ch2\u003eFAQ – Frequently asked questions about JDiag P100\u003c\/h2\u003e\n\u003ch3\u003e1) Which vehicles is it suitable for?\u003c\/h3\u003e\n\u003cp\u003eIt is designed for \u003cstrong\u003ecars and trucks\u003c\/strong\u003e and is powered via a \u003cstrong\u003e12V or 24V battery\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003e2) What is the voltage range?\u003c\/h3\u003e\n\u003cp\u003eIt is stated to support \u003cstrong\u003e0–70V\u003c\/strong\u003e. The test specification also states \u003cstrong\u003eDC 0–65V (+1 digit)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003e3) Can it measure resistance?\u003c\/h3\u003e\n\u003cp\u003eYes, \u003cstrong\u003e0–200 kΩ\u003c\/strong\u003e is stated, and the value is shown on the screen.\u003c\/p\u003e\n\u003ch3\u003e4) Does it have a color screen?\u003c\/h3\u003e\n\u003cp\u003eYes, a \u003cstrong\u003e3.2\" TFT color screen\u003c\/strong\u003e with a resolution of \u003cstrong\u003e160 × 128 dpi\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003e5) Can it help me find a bad ground?\u003c\/h3\u003e\n\u003cp\u003eYes, it is specified to check for bad ground connections and help locate short circuits.\u003c\/p\u003e\n\u003ch3\u003e6) Can I test trailer lights?\u003c\/h3\u003e\n\u003cp\u003eYes, it is specified for testing trailer lights and connections and mentions a \u003cstrong\u003e10 m extension cable\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003e7) Is there overcurrent protection?\u003c\/h3\u003e\n\u003cp\u003eYes, it has a built-in \u003cstrong\u003ecircuit breaker\u003c\/strong\u003e (1–10A) with specified trip times according to test standards.\u003c\/p\u003e\n\u003ch3\u003e8) What languages are supported?\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eEnglish\u003c\/strong\u003e according to specification.\u003c\/p\u003e\n\u003ch3\u003e9) What temperatures can it handle?\u003c\/h3\u003e\n\u003cp\u003eOperating temperature \u003cstrong\u003e0–60°C\u003c\/strong\u003e, storage \u003cstrong\u003e-40–70°C\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003e10) Can it be used on AC?\u003c\/h3\u003e\n\u003cp\u003eIt has a function to determine DC\/AC voltage and AC signal testing, but it is powered via a vehicle battery and is intended for vehicle-related circuits. Do not use it as a replacement for instruments designed for 230V mains.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003chr\u003e\n\u003csection id=\"notiser\"\u003e\n\u003ch2\u003eNotices \u0026amp; disclaimer\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eComponent activation should be done with the \u003cstrong\u003ecorrect wiring diagram\u003c\/strong\u003e and great caution. Incorrect power supply can damage control units and electronics.\u003c\/li\u003e\n\u003cli\u003eThe tool is powered via a \u003cstrong\u003e12V\/24V battery\u003c\/strong\u003e and is intended for vehicle-\/DC-related circuits.\u003c\/li\u003e\n\u003cli\u003eTrip times and current protection are stated according to the product's test standard. Do not exceed the tool's recommended load.\u003c\/li\u003e\n\u003cli\u003eAlways check contacts and ground points first – many electrical faults are due to bad ground or oxidation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"JDiag","offers":[{"title":"Default Title","offer_id":54177162363148,"sku":"FEL-B0102","price":69.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0746\/4979\/6876\/files\/H51b93e5ec0ae46ada4c0c5414b5baa435.jpg?v=1781558159","url":"https:\/\/www.felkodslasare.se\/en-en\/products\/jdiag-p100-circuit-system-tester-bilar-lastbilar","provider":"Felkodsläsare","version":"1.0","type":"link"}