{"product_id":"automobile-ignition-coil-tester-qdb-3a-multiverktyg-for-bilens-styr-och-sensorkomponenter","title":"Automobile Ignition Coil Tester QDB-3A – Multi-tool for Car Control and Sensor Components","description":"\u003cdiv class=\"product-summary\"\u003e\n  \u003ch2\u003eQuick Overview – QDB-3A Automobile Ignition Coil \u0026amp; Actuator Tester\u003c\/h2\u003e\n  \u003cp\u003e\n    \u003cstrong\u003eQDB-3A\u003c\/strong\u003e is a versatile and professional testing tool for\n    \u003cstrong\u003eignition coils, injectors, solenoids, stepper motors, and sensors\u003c\/strong\u003e\n     in both 12V and 24V vehicles. It combines several advanced functions in a\n    compact unit and is perfect for workshops as well as advanced hobbyists.\n  \u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMultiple test modes:\u003c\/strong\u003e PWM drive (2-wire), 3-wire signal mode, and stepper motor control.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSignal Simulation:\u003c\/strong\u003e Mimic signals from rail pressure and AC pressure sensors.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMultimeter:\u003c\/strong\u003e Measure voltage and resistance directly on the unit.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e1.8” color screen:\u003c\/strong\u003e Displays frequency, duty cycle, and voltage in real-time.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBuilt-in protection:\u003c\/strong\u003e Reverse polarity protection and overcurrent protection.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003e\n    The QDB-3A makes it possible to \u003cem\u003equickly troubleshoot and verify\u003c\/em\u003e actuators and sensors\n    both in and out of the vehicle. With adjustable frequency, duty cycle, and VPP, you can easily\n    adapt the signals to each component's specifications.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    \u003cem\u003eA powerful, safe, and cost-effective tool for anyone who wants full control\n    over the car's ignition and control systems.\u003c\/em\u003e\n  \u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eAutomobile Ignition Coil Tester QDB-3A – Multi-tool for Vehicle Control and Sensor Components\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQDB-3A Automobile Ignition Coil Tester\u003c\/strong\u003e is an advanced multi-function tool for diagnosing and testing vehicle \u003cem\u003eignition coils, solenoids, stepper and PWM motors, sensors, and control units\u003c\/em\u003e. With support for both \u003cstrong\u003e12V and 24V\u003c\/strong\u003e power supply, this is a reliable choice for both professional workshops and advanced hobbyists who want to troubleshoot everything from ignition systems to rail pressure sensors.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e QDB-3A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower supply:\u003c\/strong\u003e 12 V or 24 V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e 1.8-inch color screen for frequency, voltage, and load\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection:\u003c\/strong\u003e Reverse polarity protection and overcurrent protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput modes:\u003c\/strong\u003e PWM drive, stepper motor drive, 3-wire PWM signal drive\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultimeter function:\u003c\/strong\u003e Voltage and resistance measurement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Simulation:\u003c\/strong\u003e AC pressure sensor, rail pressure sensor, and flow sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnections:\u003c\/strong\u003e Full set of test cables, banana plugs, and clamps\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFeatures \u0026amp; Benefits\u003c\/h2\u003e\n\u003cp\u003eThe QDB-3A combines several key testing functions in a single compact unit:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePWM Drive:\u003c\/strong\u003e Test solenoid valves, ignition coils, and solenoid injectors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep Motor Drive:\u003c\/strong\u003e Test idle motors, dashboard motors, and urea pump stepper motors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePWM Signal Drive:\u003c\/strong\u003e Driving 3-wire urea pump motors, 3-wire ignition coils, and electronic fans.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Output Simulation:\u003c\/strong\u003e Simulate signals from AC pressure sensors, rail pressure sensors, and flow sensors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultimeter function:\u003c\/strong\u003e Measure voltage and resistance directly on the unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.8” color screen:\u003c\/strong\u003e Clear readout of frequency, duty cycle, and voltage levels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety:\u003c\/strong\u003e Built-in protection against incorrect connection (reverse protection) and overcurrent.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThanks to its robust construction and clear interface, the QDB-3A is an indispensable tool for troubleshooting complex systems such as injectors, EGR valves, rail pressure sensors, and other actuators in both gasoline and diesel engines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe QDB-3A is designed to work with a wide variety of \u003cstrong\u003egasoline and diesel vehicles\u003c\/strong\u003e that use electrical actuators, ignition systems, and sensors. It can be used on both \u003cstrong\u003e12V and 24V\u003c\/strong\u003e systems and is suitable for, among other things:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePassenger cars with gasoline engines (ignition coils, idle motors, AC pressure sensors)\u003c\/li\u003e\n\u003cli\u003eDiesel vehicles and trucks (rail pressure sensors, diesel injectors, urea pumps)\u003c\/li\u003e\n\u003cli\u003eVehicle components such as EGR valves, DRV valves, fan motors, and flow sensors\u003c\/li\u003e\n\u003cli\u003eWorkshop testing of individual actuators outside the vehicle\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eStep-by-step manual and user guide\u003c\/h2\u003e\n\u003cp\u003eThe following section provides a complete and easy-to-understand guide for utilizing all the functions of the QDB-3A. Please read the entire manual before starting work.\u003c\/p\u003e\n\u003ch3\u003eGeneral startup\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eConnect the QDB-3A to a stable 12V or 24V power source.\u003c\/li\u003e\n\u003cli\u003eEnsure the unit is in the \u003cem\u003eOFF\u003c\/em\u003e position before connecting test leads or components.\u003c\/li\u003e\n\u003cli\u003eStart the unit and confirm that the 1.8” color screen displays the correct voltage and startup menu.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003e1. Multimeter function – resistance and voltage measurement\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eConnect the test probes to the \u003cstrong\u003eV\/Ω\u003c\/strong\u003e sockets as marked.\u003c\/li\u003e\n\u003cli\u003eSelect the desired mode via the MODE dial.\u003c\/li\u003e\n\u003cli\u003eMeasure voltage or resistance – read the value directly on the color screen. Note that voltage must not be connected with incorrect polarity.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003e2. 2-wire Power Drive Mode\u003c\/h3\u003e\n\u003cp\u003eFor testing, e.g., ignition coils, solenoid valves, injectors, and EGR valves:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eConnect the component to the correct output according to the diagram.\u003c\/li\u003e\n\u003cli\u003eSupply the QDB-3A with 12V or 24V depending on the component's requirements.\u003c\/li\u003e\n\u003cli\u003eAdjust the frequency of the PWM signal with the \u003cstrong\u003eFREQ ADJ\u003c\/strong\u003e buttons.\u003c\/li\u003e\n\u003cli\u003eAdjust the duty cycle with the \u003cstrong\u003ePWM ADJ\u003c\/strong\u003e buttons.\u003c\/li\u003e\n\u003cli\u003eCheck that the parameters on the screen are within the recommended range.\u003c\/li\u003e\n\u003cli\u003eMonitor the component's function and determine its quality.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003e3. 3-wire Signal Drive Mode\u003c\/h3\u003e\n\u003cp\u003eFor example, 3-wire urea pumps, 3-wire ignition coils, and electronic fans:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eConnect the component according to the wiring diagram.\u003c\/li\u003e\n\u003cli\u003eSupply the QDB-3A with 12V or 24V.\u003c\/li\u003e\n\u003cli\u003eAdjust the VPP level for the PWM signal between 5–12V according to the component's specification.\u003c\/li\u003e\n\u003cli\u003eSet the frequency and duty cycle for the PWM signal.\u003c\/li\u003e\n\u003cli\u003eConfirm on the screen that the values are within the set limits.\u003c\/li\u003e\n\u003cli\u003eObserve the component's operating condition and verify its function.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003e4. Step Motor Testing\u003c\/h3\u003e\n\u003cp\u003eFor idle motor, instrument motor, or headlight motor:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eConnect the stepper motor according to the diagram on the top of the unit.\u003c\/li\u003e\n\u003cli\u003eSupply the QDB-3A with 12V or 24V.\u003c\/li\u003e\n\u003cli\u003ePress briefly or hold the left\/right buttons to control the motor in the respective direction.\u003c\/li\u003e\n\u003cli\u003eAssess the motor's operation and function by observing the movement and readings on the display.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003e5. Signal Output Simulation\u003c\/h3\u003e\n\u003cp\u003eFor simulating sensor signals from AC pressure sensors, rail pressure sensors, or flow sensors:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eSelect \u003cem\u003eSignal Output Simulation\u003c\/em\u003e in the MODE menu.\u003c\/li\u003e\n\u003cli\u003eConnect the sensor or control unit to be tested.\u003c\/li\u003e\n\u003cli\u003eAdjust output values to mimic the vehicle's real sensor data and observe the reaction in the control system.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eSafety tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAlways wear safety glasses when working with vehicle electronics.\u003c\/li\u003e\n\u003cli\u003eEnsure all cables are properly connected before applying power.\u003c\/li\u003e\n\u003cli\u003eDo not expose the unit to moisture or extreme temperatures.\u003c\/li\u003e\n\u003cli\u003eTurn off the unit and disconnect power after testing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eFrequently Asked Questions (FAQ)\u003c\/h2\u003e\n\u003ch3\u003eWhat can the QDB-3A test?\u003c\/h3\u003e\n\u003cp\u003eThe unit can drive and\/or simulate: ignition coils, solenoid valves, injectors (gasoline\/diesel), EGR\/DRV valves, electronic fans, urea\/AdBlue pumps (2-wire \u0026amp; 3-wire), stepper motors (idle, dashboard, headlight), rail pressure and AC pressure sensors, and flow sensors.\u003c\/p\u003e\n\u003ch3\u003eDoes it work on both 12V and 24V vehicles?\u003c\/h3\u003e\n\u003cp\u003eYes. The QDB-3A has a power supply for \u003cstrong\u003e12–24V\u003c\/strong\u003e. Select the correct source before connecting components.\u003c\/p\u003e\n\u003ch3\u003eDoes the unit have built-in protection?\u003c\/h3\u003e\n\u003cp\u003eYes. It has \u003cstrong\u003ereverse polarity protection\u003c\/strong\u003e and \u003cstrong\u003eovercurrent protection\u003c\/strong\u003e. These protections reduce the risk of damage from incorrect connection or overload.\u003c\/p\u003e\n\u003ch3\u003eCan I see frequency, duty cycle, and voltage in real-time?\u003c\/h3\u003e\n\u003cp\u003eYes. The \u003cstrong\u003e1.8” color screen\u003c\/strong\u003e displays frequency (Hz), duty cycle (%), and output voltage (ADJ OUT\/VPP) in real-time, among other things.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between “2-wire Power Drive” and “3-wire Signal Drive”?\u003c\/h3\u003e\n\u003cp\u003e\u003cem\u003e2-wire Power Drive\u003c\/em\u003e powers two-wire components (e.g., ignition coil, solenoid, 2-wire urea pump) with adjustable PWM frequency and duty. \u003cem\u003e3-wire Signal Drive\u003c\/em\u003e powers 3-wire components (e.g., 3-wire ignition coil\/fan\/urea pump) with separately adjustable signal amplitude (VPP 5–12V), frequency, and duty.\u003c\/p\u003e\n\u003ch3\u003eCan I operate stepper motors?\u003c\/h3\u003e\n\u003cp\u003eYes. In \u003cstrong\u003eStep Motor\u003c\/strong\u003e mode, you can operate idle, instrument, and headlight motors incrementally left\/right with clear directional control on the panel.\u003c\/p\u003e\n\u003ch3\u003eCan the QDB-3A replace a full OBD diagnosis?\u003c\/h3\u003e\n\u003cp\u003eNo. The QDB-3A is an \u003cem\u003eactuator driver and signal generator\u003c\/em\u003e, not an OBD scanner. It is used for bench\/testing individual components and for quick functional checks in the car.\u003c\/p\u003e\n\u003ch3\u003eHow do I know which PWM values to choose?\u003c\/h3\u003e\n\u003cp\u003eAlways refer to the component's data sheet\/workshop data. Start with a low duty (e.g., 5–10%) and gradually increase while monitoring temperature, current, and behavior.\u003c\/p\u003e\n\u003ch3\u003eCan I damage a component with incorrect settings?\u003c\/h3\u003e\n\u003cp\u003eYes, if duty\/frequency\/voltage are set too high for an extended period. Follow the component's specifications and use protective equipment.\u003c\/p\u003e\n\u003ch3\u003eWhy am I not getting any reaction from the component?\u003c\/h3\u003e\n\u003cp\u003eCheck: correct mode (MODE), correct polarity, good grounding, that the voltage source is 12\/24V as required, that fuses\/cables are intact, and that duty is not 0%.\u003c\/p\u003e\n\u003ch3\u003eCan I use the QDB-3A to “clean” or “reset” injectors?\u003c\/h3\u003e\n\u003cp\u003eThe unit can drive injectors for functional testing. Cleaning\/ultrasound requires special equipment – the QDB-3A only provides control signal\/load power.\u003c\/p\u003e\n\u003ch3\u003eDoes the multimeter measure both voltage and resistance?\u003c\/h3\u003e\n\u003cp\u003eYes. In \u003cstrong\u003eMultimeter Function\u003c\/strong\u003e, you measure voltage (V) and resistance (Ω). Connect test probes as marked and read the display.\u003c\/p\u003e\n\u003ch3\u003eIs it possible to simulate sensor signals?\u003c\/h3\u003e\n\u003cp\u003eYes. In \u003cstrong\u003eSignal output simulation\u003c\/strong\u003e, you can simulate typical signals for AC pressure, rail pressure, and flow to see how the control unit reacts.\u003c\/p\u003e\n\u003ch3\u003eCan I test components completely loose on the bench?\u003c\/h3\u003e\n\u003cp\u003eYes. The QDB-3A is ideal for bench testing individual actuators\/sensors outside the vehicle.\u003c\/p\u003e\n\u003ch3\u003eWhat accessories are included?\u003c\/h3\u003e\n\u003cp\u003eSee the \u003cem\u003ePackage Contents\u003c\/em\u003e section below – includes cables, clamps, banana plugs, etc., as shown in the product images.\u003c\/p\u003e\n\u003ch3\u003eDo I need special knowledge?\u003c\/h3\u003e\n\u003cp\u003eBasic electrical\/automotive knowledge is recommended. Read the manual and always start with conservative parameters.\u003c\/p\u003e\n\u003ch2\u003eTips \u0026amp; advice for use\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStart low:\u003c\/strong\u003e Always start with a low duty cycle and increase gradually.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeep an eye on the heat:\u003c\/strong\u003e Feel the component; stop if it becomes abnormally hot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrect source:\u003c\/strong\u003e Choose 12V or 24V according to the component's rating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrect mode:\u003c\/strong\u003e Ensure that MODE matches the connected component (PWM\/3-wire\/Step).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGood ground:\u003c\/strong\u003e Poor ground is a common cause of error – check cables and clamps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument:\u003c\/strong\u003e Note test parameters (Hz, %, VPP) for feedback in the workshop.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety first:\u003c\/strong\u003e Wear safety glasses; keep hands and metal away from rotating parts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShut down correctly:\u003c\/strong\u003e Always finish by lowering duty to 0%, turning off power, and disconnecting the load.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTroubleshooting\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo display\/power:\u003c\/strong\u003e Check power source, polarity, and cable\/protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo component movement:\u003c\/strong\u003e Incorrect MODE, duty 0%, inappropriate frequency, or incorrectly connected leads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUneven operation:\u003c\/strong\u003e Lower the frequency slightly or try a different duty. Check that the component is not defective.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection trips:\u003c\/strong\u003e Current too high – lower duty, raise frequency, or use a different load.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 × QDB-3A \u003cem\u003eAutomobile Ignition Coil \/ Actuator Drive Detector\u003c\/em\u003e with 1.8” color screen\u003c\/li\u003e\n\u003cli\u003e1 × Main cable set with banana plugs\u003c\/li\u003e\n\u003cli\u003e1 × Set of quick-connect blocks\/terminals\u003c\/li\u003e\n\u003cli\u003e1 × Wiring harness for component drive (2-wire\/3-wire)\u003c\/li\u003e\n\u003cli\u003e1 × Power cable with battery clamps\u003c\/li\u003e\n\u003cli\u003e1 × Urea\/AdBlue pump connector cable (3-wire)\u003c\/li\u003e\n\u003cli\u003e1 × Printed quick manual (\u003cem\u003eAutomobile actuator Drive detector\u003c\/em\u003e)\u003c\/li\u003e\n\u003cli\u003e1 × Storage box\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eImportant notes \u0026amp; disclaimer\u003c\/h2\u003e\n\u003cp\u003eThe QDB-3A is a \u003cstrong\u003etest and drive tool\u003c\/strong\u003e for actuators\/sensors. It is not an OBD diagnostic scanner and does not read error codes from the vehicle's OBD port.\u003c\/p\u003e\n\u003cp\u003eThe user is responsible for correct connections and parameters (frequency, duty, VPP, voltage). Incorrect use can damage components or vehicles. Always follow the technical data of the respective component.\u003c\/p\u003e\n\u003cp\u003eUse only in dry, ventilated environments. Do not expose the unit to moisture, extreme heat\/cold, or flammable liquids. Keep out of reach of children.\u003c\/p\u003e\n\u003cp\u003eThe images show typical accessories; minor deviations may occur depending on the batch. Specifications may change without prior notice.\u003c\/p\u003e\n\u003ch2\u003eSummary\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQDB-3A\u003c\/strong\u003e is a complete bench tool for controlling and testing car actuators and sensors. With PWM and stepper motor drive, 3-wire signal mode, multimeter function, signal simulation, and a clear 1.8” color screen, you get quick troubleshooting and confident decisions – in both 12V and 24V systems.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Felkodsläsare","offers":[{"title":"Default Title","offer_id":54479941927180,"sku":"FEL-D0193","price":66.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0746\/4979\/6876\/files\/Hd527fe0edb1c47659567e85bd86b2285K.jpg?v=1781818355","url":"https:\/\/www.felkodslasare.se\/en-en\/products\/automobile-ignition-coil-tester-qdb-3a-multiverktyg-for-bilens-styr-och-sensorkomponenter","provider":"Felkodsläsare","version":"1.0","type":"link"}