Vdiagtool V500
Vdiagtool V500
VDIAGTOOL V500 0.1~100V Circuit Probe Kit

✔ Smart test
✔ Multimeter (voltage, resistance, diode, short circuit, current, frequency)
✔ Relay protection test
✔ Oscilloscope mode
✔ Injector test
✔ 0-5V power supply
✔ Component activation and testing
✔ Positive/negative detection
Unlike traditional testers, the V500 displays voltage, current, resistance, and more simultaneously, enhancing diagnostic efficiency and saving time.

The VDIAGTOOL V500 is an advanced circuit tester with comprehensive functions:
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Smart Test: Automatically detects voltage, resistance, current, and other circuit data, improving diagnostic efficiency.
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Multimeter Mode: Measures DC voltage, AC voltage, resistance, current, and frequency, enabling quick fault detection.
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Oscilloscope Mode: Provides real-time signal analysis, ideal for diagnosing high-frequency circuits and complex systems.
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Relay Test: Checks relay switch status, coil health, and contact performance to ensure reliability and safety.
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Injector and Component Testing: Tests injectors and activates components without disassembly, offering real-time feedback for efficient diagnostics and preventive maintenance.
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0-5V Power Supply: Provides a stable low-voltage power source for simulating input voltage, testing circuits, and calibrating systems.
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Wide Compatibility: Supports diagnostic functions for cars, trucks, motorcycles, ships, and more, with a voltage range of 9V - 30V DC and resistance from 0Ω to 200kΩ.
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Multi-language Support: Available in 9 languages, including English, Chinese, Spanish, and more, to enhance user experience.
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Online Updates & Warranty: Includes online updates, a 3-year warranty, and 24/7 technical support for reliable after-sales service.

Smart Test and Multimeter Mode:
➤ Smart Test: The VDIAGTOOL V500 smart probe tester automatically identifies voltage, current, resistance, and other circuit parameters, simplifying the diagnostic process by eliminating the need for users to manually switch modes, offering great convenience in circuit diagnosis.
➤ Multimeter Mode: The multimeter in the VDIAGTOOL V500 tests essential parameters like voltage, current, and resistance, providing several benefits:
✔️ Multi-function Measurement: Measures DC/AC voltage, resistance, and current, helping users quickly identify circuit issues like shorts or component failures.
✔️ Real-time Feedback: The digital display shows measurement data instantly, allowing for quick judgments without complex tools.
✔️ Easy to Operate: Designed for user-friendliness, even non-professionals can use it easily, saving time and effort.
🚩 Smart and Multi-functional: The combination of intelligent detection and multi-functionality makes the VDIAGTOOL V500 a comprehensive solution for circuit troubleshooting.

Oscilloscope Function:
➤ Parameter Range:
👉 Working Voltage: 9V - 30V DC
👉 Voltage Measurement Range: 0.1V - 100V
👉 Resistance Measurement Range: 0Ω - 200kΩ
➤ Oscilloscope Function:
✔️ Visual Fault Diagnosis: The oscilloscope mode displays the signal waveform, allowing users to visualize dynamic changes in the circuit. This helps quickly identify issues like waveform distortion, signal attenuation, and other abnormalities that cannot be seen through digital readings alone.
✔️ Detect Transient Problems: Transient issues (e.g., voltage spikes, pulse interference) often go unnoticed by static tools like multimeters. The oscilloscope captures and displays these real-time signals, making it easier to detect transient faults such as power fluctuations or signal instability.
✔️ Frequency Analysis: The oscilloscope also measures the frequency, period, and other characteristics of the signal. This is crucial for debugging and optimizing circuits like oscillators, clock systems, and wireless communications, allowing users to diagnose frequency-related issues with precision.
VDIAGTOOL V500 Relay Test:
➤ Relay Test: The relay test is used to assess the working state and performance of the relay, which is a crucial component in many circuits. Ensuring the relay operates reliably is essential for the overall circuit's performance. The relay test offers the following benefits:
👉 Detect the On/Off State of the Relay: The test checks whether the relay operates normally when powered on or off, and if it reliably switches the contacts. This helps quickly identify issues such as wear, aging, or failure.
👉 Determine Coil Health: By measuring the relay coil's resistance or response, the test can detect issues like open, short-circuited, or burnt-out coils, preventing malfunctions due to coil failure.
👉 Measure Delay and Response Time: The relay's response time (from signal reception to contact switching) is critical for certain circuits. This test measures the delay accurately, ensuring the relay meets design specifications and operates synchronously with the circuit.
👉 Check Contact Performance: The test evaluates the relay's contact condition, detecting issues like wear or oxidation that can lead to poor contact, increased resistance, and instability. This helps ensure proper contact performance, preventing circuit failures caused by contact problems.

Component Activation and Injector Test:
➤ Component Activation: Quickly test and verify components by sending electrical signals, such as:
👉 Relays
👉 Sensors
👉 Motors or fans
➤ Injector Test: Identify injector issues like blockages or wear without disassembling the fuel system. 4 modes for testing:
✔️ Mode 1: 250 ms positive pulse
✔️ Mode 2: 7 ms positive, 20 ms negative pulse (1.4s cycle)
✔️ Mode 3: 4 ms positive, 10 ms negative pulse (1.4s cycle)
✔️ Mode 4: Continuous 7 ms positive, 20 ms negative pulse
🚩 Efficient Diagnostics: Test components and injectors in real-time, locate faults quickly, and verify system reliability without disassembly.

0-5V Power Supply:
➤ The 0-5V power supply offers a stable and adjustable voltage for circuit diagnosis, helping users quickly locate faults, prevent component damage, and simplify debugging. Key functions include:
🏆 Stable Power for Low-Voltage Circuits: Provides a steady DC voltage for devices like sensors, microcontrollers, and integrated circuits, ensuring they operate within their designed voltage range.
🏆 Analog Signal for Debugging: Acts as an analog signal source, allowing users to test circuit responses to specific voltage inputs, ideal for sensor interfaces and analog circuits.
🏆 Easily Integrates with Other Tools: Works seamlessly with test equipment like oscilloscopes and multimeters, enabling comprehensive diagnostics by analyzing circuit responses to the supplied voltage.

V500 Wide Compatibility:
➤ Supported models:
✔️Support cars and SUVs
✔️Support trucks
✔️Support motorcycles
✔️Support ships
✔️Buses
..............
➤ Wide measurement range:
👉Working voltage: 9V - 30V DC
👉Voltage measurement range: 0.1V -100V
👉Resistance measurement range: 0KR - 200KR
👉Working temperature: 0℃-50℃/32°F-122°F
👉Working environment temperature: 0℃-50°C/-32°F-122°F
👉Storage temperature: - 20°℃-70°C/-4°F-158°F
➤ Supports 9 languages:
👍English
👍Chinese
👍French
👍Spanish
👍German
👍Russian
👍Italian
👍Portuguese
👍Polish

Packing list: ✔️V500 × 1 ✔️Relay test lead x 1 ✔️Probe tip × 1 ✔️Alligator clip × ✔️Fine probe tip × 1 ✔️Type-C data cable x 1 ✔️Probe tip extension cable x 1 ✔️User manual x 1 ✔️Wire piercing probe x 2 ✔️Banana to banana plug test lead × 2 ✔️Fuse x 3
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Description
Description
The VDIAGTOOL V500 is an advanced circuit tester with comprehensive functions:
1.Smart Test:: Automatically detects voltage, resistance, current, and other circuit data, improving diagnostic efficiency.
2.Multimeter Mode:: Measures DC voltage, AC voltage, resistance, current, and frequency, enabling quick fault detection.
3.Oscilloscope Mode: Provides real-time signal analysis, ideal for diagnosing high-frequency circuits and complex systems.
4.Relay Test:: Checks relay switch status, coil health, and contact performance to ensure reliability and safety.
5.Injector and Component Testing: Tests injectors and activates components without disassembly, offering real-time feedback for efficient diagnostics and preventive maintenance.
6.0-5V Power Supply: Provides a stable low-voltage power source for simulating input voltage, testing circuits, and calibrating systems.
7.Wide Compatibility: Supports diagnostic functions for cars, trucks, motorcycles, ships, and more, with a voltage range of 9V - 30V DC and resistance from 0Ω to 200kΩ.
8.Multi-language Support:: Available in 9 languages, including English, Chinese, Spanish, and more, to enhance user experience.
9.Online Updates & Warranty: Includes online updates, a 3-year warranty, and 24/7 technical support for reliable after-sales service.
Why is Vdiagtool V500pro the must-have tool for you?
Why is Vdiagtool V500pro the must-have tool for you?
The VDIAGTOOL V500 is a must-have tool for anyone dealing with automotive electrical systems, offering an impressive range of features that streamline diagnostic work. Unlike traditional testers, the V500 combines multiple essential functions into one, making it a true all-in-one solution for professionals and DIYers alike. Here's why it's a game-changer:
- Comprehensive Testing Capabilities: With multimeter functions (voltage, resistance, diode, short circuit, current, and frequency), relay protection testing, oscilloscope mode, injector testing, and component activation, the V500 is capable of handling virtually any electrical test you encounter. No need to juggle multiple devices—everything you need is right in one tool.
- Enhanced Efficiency: The V500 can display voltage, current, resistance, and more simultaneously, which drastically improves diagnostic efficiency. This multi-display feature allows you to analyze multiple parameters at once, saving time and helping you pinpoint issues faster.
- Precision & Versatility: With a 0-5V power supply, positive/negative detection, and the ability to activate and test components, you have the precision and versatility needed to tackle both simple and complex electrical issues in vehicles. Whether you're diagnosing a faulty relay, testing an injector, or checking power supply levels, the V500 does it all with ease.
- Future-Proof Design: Featuring advanced functions like oscilloscope mode and component activation, the V500 ensures that you’re prepared for future advancements in automotive technology, making it a smart investment for any professional or serious enthusiast.
In summary, the VDIAGTOOL V500 is a powerful, all-in-one circuit tester that saves you time and effort, enhances diagnostic accuracy, and helps you tackle any electrical issue with confidence. Whether you're a mechanic, technician, or DIY car owner, the V500 is the tool you can't afford to be without
Delivery and Shipping
Delivery and Shipping
- Tax Free
- 2 Year Warranty
- lifetime technical support.
- Money-back guarantee
- Free Shipping
- 2-5 Days Fast Shipping
V500 Product Details

V500
V500 is one of the latest products in the V series and is the most potent intelligent circuit system detector ready for 2025.

VDIAGTOOL V500 is an intelligent circuit system probe tester that covers all circuit tests:
✔Smart test ✔Multimeter mode (voltage, resistance, diode & short circuit, current, frequency) ✔Relay protection test ✔Oscilloscope mode ✔Injector test ✔0-5V power supply ✔Component activation ✔Positive and negative detection ✔Diode testing ✔Component testing.
Unlike traditional circuit detectors, the V500 intelligent detection mode can display voltage, current, resistance, etc. simultaneously, greatly improving your circuit diagnosis efficiency and saving time.
Smart test
Automatically detect voltage and ohms
Smart testing generally refers to an automated and intelligent technology used to detect and analyze the health of the automotive circuit system, diagnose circuit faults, and give repair or adjustment suggestions. Such equipment usually integrates multiple sensors, algorithms, automatic detection programs, and user interfaces to diagnose automotive circuit problems quickly. It can reduce the time and complexity of manual inspections and improve maintenance efficiency.
Unlike traditional circuit testers, VDIAGTOOL V500 is an intelligent circuit probe tester that can automatically identify data such as voltage, resistance, current, etc. in the circuit, providing customers with great convenience in circuit diagnosis and improving your circuit diagnosis efficiency.

Multimeter mode
(voltage, resistance, diode short circuit, current, frequency)
Multimeter Mode is one of the common functions of automotive circuit intelligent testers or digital multimeters. It is used to measure multiple parameters of the circuit, such as voltage, current, resistance, etc. This mode is widely used in automotive maintenance, home appliance maintenance, electrical engineering and other fields. Specifically, the multimeter mode can help detect the health of the automotive circuit system, diagnose circuit problems, or perform basic electrical inspections.
The VDIAGTOOL V500 power circuit probe diagnostic tool has a built-in multimeter mode. The multimeter integrates multiple functions and can measure DC voltage, AC voltage, resistance, current, etc., allowing users to quickly locate the fault point and make appropriate maintenance decisions.

Oscilloscope mode
Oscilloscope Mode is a function of an automotive circuit intelligent tester or digital oscilloscope that is used to capture, display, and analyze the waveform of an electrical signal that changes over time. It is widely used in automotive maintenance, electrical engineering, electronic product development, and other fields, and is particularly suitable for testing and analyzing signal quality and waveform characteristics in automotive electronic systems.
In automotive circuits, the main function of oscilloscope mode is to help maintenance personnel detect and analyze signals, sensor data, signal noise, etc. output by the electronic control unit (ECU), and diagnose whether the circuit is working properly. Compared with traditional multimeters, oscilloscopes can provide more detailed time domain analysis and identify transient problems that are not easy to detect.

Relay test
Relay testing is to check the function of the relay to ensure that it can work properly. Relay is a common electronic component in automotive circuits, mainly used for the transmission of switch control signals, such as controlling lights, air conditioning, electric windows, starting systems, etc. It usually consists of an electromagnet and a set of switch contacts. When current passes through the electromagnet, it generates a magnetic field, attracting the contacts to close, completing the connection or disconnection of the circuit.
In the automotive circuit intelligent tester, the relay test mode can help users determine whether the relay is working properly, and whether there are problems such as poor contact, coil disconnection, and contact damage.
The VDIAGTOOL V500 circuit diagnostic kit supports relay tests. Relay tests can help customers detect key information such as relay switch status, coil health, contact performance, etc., to ensure the normal operation of the relay in the circuit, which plays an important role in improving the reliability and safety of the equipment and preventing circuit problems caused by relay failure.

Fuel injector testing and component activation
Fuel injector testing and component activation are very important operations in the automotive diagnostic and maintenance process to ensure that the fuel injection system can work properly. Fuel injectors are responsible for spraying fuel into the engine's combustion chamber in an atomized form to achieve effective combustion and power output. For modern vehicles, the normal operation of the fuel injection system is directly related to engine performance, fuel efficiency and emission control.
Injector testing and component activation provide efficient and direct diagnostic means to directly test the working status of key components without disassembly, provide real-time feedback, quickly locate faults, and verify the reliability of the control system. In addition, these two functions also support preventive maintenance, help optimize overall system performance, and avoid larger problems caused by component failure.

The above are the five major functions of V500. If you want to see other functions, please click here
FAQ
What is the resistance measurement range?
What is the resistance measurement range?
0KR - 200KR
What models does our product apply to?
What models does our product apply to?
Cars, SUVs, motorcycles, boats, trucks, buses
V500 warranty period?
V500 warranty period?
3-year warranty
Can the screen of the V500 be rotated?
Can the screen of the V500 be rotated?
Screen adjustable from 0 to 90°
What is the difference between the V500 and the original V200/V200 PRO?
What is the difference between the V500 and the original V200/V200 PRO?
V500 has the latest improved functions of Fuel Injector Test, Activate Component; multimeter mode, and 0-5V Power Supply with online update software system, 9 languages available, 90° folable screen & rich accessories.
What do I do if my VDIAGTOOL V500 intelligent electrical system probe tester is broken?
What do I do if my VDIAGTOOL V500 intelligent electrical system probe tester is broken?
We offer 3 3-year warranty and Lifetime Af ter-s ale service. If the unit you had is defective or malfunctions, please reach us via service@vdiagtool.com directly, we can send you a new one to replace it within 24 hours.
How do I connect my devices for testing?
How do I connect my devices for testing?
You’ve just activated Power Circuit Tester which can be powered by either connecting to cigarette lighter/car’s battery,no external battery needed! Please note cigarette lighter is not included.
What can VDIAGTOOL V500 automotive electrical tool do for you?
What can VDIAGTOOL V500 automotive electrical tool do for you?
This tool realizes multiple circuit tests: √Fuel Injector Test,√Activate Components,√AC/DC Voltage/Diode/Resistance Test,√Polarity Test,√Continuity/Signal Circuit Test,√Check Poor Ground,√Locate Short,√Relay/ Fuse/Trailer Light Test,√Power Supply.