Why choose VDIAGTOOL V500  Circuit Probe Kit Automotive Multimeter Electrical System Diagnostic Tools?

As the upgraded model of V200/V200Pro, V500 power circuit probe tester combines the functions of circuit tester, relay tester, oscilloscope, and multimeter into one tool, totally for troubleshooting any DC 9-30V auto electrical issues. It realizes multiple functions: ✅Fuel Injector Test,✅Activate Components,✅AC/DC Voltage/Diode/Resistance Test,✅Polarity Test,✅Continuity/Signal Circuit Test,✅Check Poor Ground,✅Relay/ Fuse/Trailer Light Test,✅Power Supply.

【UPGRADE AUTOMOTIVE CIRCUIT TESTER】This is the latest generation of electrical system tester to help you troubleshoot all sorts of automotive electrical/electronic problems efficiently. With clear result display in waveform & digital, LED lights & buzzer alarm for quick polarity identification, 90° foldable screen for displaying data in narrow area & flashlights to better illumination in dark, online updates & 9 languages available, it must be a great choice for DIYers, electricians & technicians.

【6-IN-1 MULTIMETER & OSCILLOSCOPE FUNCTION】V500 circuit probe tester works more powerfully than others. Multimeter mode contains voltage(VDC), resistance(OHM), diode(DIO), current(AMP), frequency & polarity(P-N). The oscilloscope function features clear real-time waveform diagrams to test various voltage signals with 4 arguments: AC/DC voltage, resistance value & frequency duty cycle, making it advanced for detecting sensors & actuators, circuit connectivity & bad grounds.

【FUEL INJECTOR TEST】This electrical system probe tester provides 4 types of pulse signals (once or multiple times) to the injector for quick and easy diagnosis of the Injector circuit, supporting tests ranging from 0-110V to 260V for most injector models. It is more convenient for the owner to detect the condition of the fuel injector regularly and achieve the maximum cleaning effect with car cleaner, undoubtedly saving time & costly trips to a dealership!

【RELAY/FUSE/TRAILER LIGHT TEST & BAD FUSES LOCATION】V500 is also a relay tester that will assess cables, ground wires & probes to quickly detect whether relays are normal. Suitable for the most common 4-pin and 5-pin relays found in vehicles. Besides, it will help you locate a blown fuse in seconds and check if the trailer light is in good condition. In favor of avoiding frustrating situations like a trailer light malfunction during a road trip or a blown fuse that leaves the vehicle stranded

【 90° FOLDABLE SCREEN】 
The Vdiagtool V500 Automotive Circuit Tester is equipped with a 90° foldable screen design to enhance the user's experience, allowing the user to easily adjust the angle of the screen according to their needs, which helps to optimise the visibility of the screen under different test environment lighting conditions, reducing reflections and ensuring that the information is clearly visible. At the same time, in space constraints or inconvenient location of the working environment, the folding screen can be flexibly adjusted to adapt to different testing positions.

【  0–5V Power Supply for Safe Sensor & ECU Debugging】 
Safely simulate sensor signals with the V500PRO’s adjustable 0–5V power supply—critical for testing O2 sensors, throttle position sensors, and CAN bus modules. This stable low-voltage output prevents damage to sensitive electronics while debugging circuits. Use it to calibrate systems, verify sensor responses, or activate low-power devices like LED indicators. A must-have for ECU tuning and preventive maintenance!

 【 9 Languages, 3-Year Warranty & Lifetime Updates】 
The V500 supports 9 languages (English, Spanish, French, etc.), eliminating language barriers. Backed by a 3-year warranty and free lifetime firmware updates, it’s a future-proof investment. The kit includes probe tips, test leads, and a Type-C cable—everything you need in one package. Got questions? Our 24/7 tech support (vdiagtool2@outlook.com) is always ready to help!

VDIAGTOOL V500 MODE 1 Smart Test & Multimeter Mode：
🚩Practical design:
         🔥 Built-in flashlight: V500  has a built-in flashlight, which is convenient for you to perform circuit diagnosis in dark environments;
 🚩Smart Test: Different from traditional power circuit testers, the 2025 VDIAGTOOL V500 2 IN 1 Automotive Power Circuit Probe Kit Breaker Finder Tester can automatically identify the signals under test, such as voltage, current, resistance and other parameters in the circuit, and save switching time between different test modes , allowing customers to focus on repairing circuit faults. In addition,V500 supports 90-degree screen rotation, allowing customers to observe data parameters on the screen at any angle; the built-in flashlight design allows customers to work normally in dark environments.
 🚩Multimeter mode：Multimeter: The multimeter in the VDIAGTOOL V500 intelligent circuit probe detector is mainly used to measure basic parameters such as voltage, current, resistance, etc. in the circuit, and has a wide measurement range:
        👉Voltage Test：0.1-100V;
        👉Resistance Test: 0KR-200KR;
        👉Current Test：2mA-25A;
        👉Frequency Test: 10Hz-1MHZ;
        👉Oscilloscope:10Hz-100KHZ.

DIAGTOOL V500  MODE 1 RELAY TEST：
➤Relay testing is the process of checking the function and performance of a relay to ensure that it works properly in the circuit. By testing the relay's coil voltage, resistance, contact status, etc., it is possible to diagnose whether the relay is damaged or failed, which is crucial to maintaining the reliability and safety of the electrical system.Common relay tests include:
        👉 Voltage test;
        👉 Coil resistance test;
        👉 Relay action test;
        👉 Relay delay and retention test.

 VDIAGTOOL V500  MODE 1 Oscilloscope Function：
➤Parameter range：
        🔹Frequency Measurement Range: 10Hz-1000Khz
        🔹Waveform display: 10Hz-100Khz
➤Oscilloscope Function:
       ✔️Visual fault diagnosis: The oscilloscope mode visualizes the signal and intuitively displays the change of the signal shape, which makes it convenient for customers to quickly identify abnormal behavior in the circuit, such as waveform distortion, signal attenuation and other problems;
       ✔️Detect transient problems: Transient problems in the circuit (such as instantaneous voltage spikes, pulse interference, etc.) are sometimes not captured by static measurement tools (such as multimeters). The oscilloscope can display these transient signals in real time, which helps to find transient faults, such as power supply fluctuations or unstable signals;
       ✔️ Frequency analysis: The oscilloscope can not only display the waveform of voltage or current, but also help users measure the frequency, period and other characteristics of the signal. This is very useful for debugging and optimizing oscillation circuits, clock circuits or wireless communication circuits, helping customers accurately diagnose the frequency characteristics of the circuit;
      ✔️Capture repetitive faults: For periodic faults, the oscilloscope can find the problem by capturing and analyzing the periodic changes of the signal. For example, users can see if there is repeated noise interference or signal interruption, which helps to accurately locate the cause of the fault.

VDIAGTOOL V500 MODE 1 0-5V POWER SUPPLY:
➤0-5V Power Supply provides a stable and adjustable low-voltage power supply for customers' circuit diagnosis. It can simulate input voltage, debug sensors, test circuit behavior, and calibrate systems. Customers can use it to quickly locate circuit faults, avoid component damage caused by misoperation, and simplify the process of circuit debugging and optimization. It is especially suitable for debugging and diagnosis of low-power electronic devices and sensor systems. 0-5V Power Supply is commonly used to detect the following low-power electronic devices and sensor systems:
       ✔️Sensors: oxygen sensors, temperature sensors, pressure sensors, etc.;
       ✔️Motor drive modules: electric windows, electric seats, etc.;
       ✔️On-board communication modules: CAN bus interface and other low-power communication modules;
       ✔️Relays and switches: lights, fans and audio systems;
       ✔️LED indicators: engine fault lights, oil pressure warning lights, etc；
➤In circuit diagnosis, 0-5V Power Supply can bring the following conveniences to customers:
       ✔️Stable power output: Provides stable and adjustable 0-5V voltage to ensure that low-voltage circuits and equipment can work normally within the design range, avoiding component damage or functional abnormalities caused by voltage fluctuations;
       ✔️ Convenient debugging and testing: As an analog signal source, users can easily adjust the output voltage for various circuit tests and debugging, quickly verify the impact of different voltage inputs on the circuit, and improve the efficiency of troubleshooting;
       ✔️High safety: Compared with high-voltage power supplies, 0-5V power supplies are suitable for sensitive electronic components, reducing the risk during the test process, avoiding accidental application of excessive voltage and damage to the equipment, and improving the safety of use.

VDIAGTOOL V500  MODE 1 Component Activation & Injector Test:
➤Component Activation：Component activation is mainly used in circuit testers to confirm and test the function and status of each component in the circuit. By activating different components, users can quickly identify faults and ensure the normal operation of the circuit. This provides customers with practical conveniences such as saving time, improving maintenance efficiency, and reducing unnecessary replacement costs.
➤Injector Test：Injector testing is often used to detect the performance and working status of automotive injectors. Through testing, the injection frequency, injection volume, and injection pattern of the injector can be evaluated to ensure that it can accurately supply fuel when the engine is running. There are 4 modes for injector testing:
       👉 Mode 1: One 250 millisecond positive electrode
       👉 Mode 2: Cycle positive for 7 milliseconds, negative for 20 milliseconds in 1.4 seconds
       👉 Mode 3: Cycle the positive electrode for 4 milliseconds and the negative electrode for 10 milliseconds in 1.4 seconds
       👉 Mode 4: Continuous output of positive pole for 7 milliseconds and negative pole for 20 milliseconds
➤Through injector testing, customers can bring the following conveniences:
      ✔️Fault diagnosis: quickly identify injector problems, such as injector blockage, uneven injection amount, injector leakage, etc., to reduce troubleshooting time;
      ✔️Performance optimization: ensure the normal operation of the injector, improve engine efficiency and power output;
      ✔️Cost savings: avoid unnecessary injector replacement and reduce repair and maintenance costs.

>>> Packing List：
V500 Device - 1 unit
Relay Test Cable - 1 piece
Standard Probe Tip - 1 piece
Alligator Battery Clip - 1 piece
Fine Probe Tip - 1 piece
Type-C Data Cable - 1 piece
Probe Tip Extension Cable - 1 piece
User's Manual - 1 copy
Wire Piercing Probe - 2 pieces
Banana to Banana Plug Test Lead - 2 pieces
Fuse - 3 pieces