Technical Specifications

Brand	VDIAGTOOL
Power Source	Battery Powered
Style	Electrical Circuit Tester Power Probe
Color	Blue
Model	VDIAGTOOL V500
Operating Voltage	9V-30V DC
Voltage Measurement Range	2mV-100v
Resistance Measurement Range	0KR-200KR
Current	2mA-25A
Oscilloscope	10Hz-100KHz
Frequency	10Hz--1MHz

VDIAGTOOL V500 Electrical Circuit Tester Fuel Injector Test

Are you tired of getting bogged down and frustrated by wrestling with automotive electrical issues? Do you find yourself in need of a reliable tool that can quickly and accurately get to the root of your vehicle's electrical circuit faults?Introducing you to our state-of-the-art automotive circuit testers that will take the hassle out of malfunctioning circuits and make it easy for you to meet your challenges.

Our circuit testers are designed to simplify complex automotive electrical diagnostics, allowing you to quickly and accurately diagnose circuit problems in any situation!Take the first step toward a more efficient and safer automotive repair process. Our automotive circuit testers are the reliable tools you need to improve your service capabilities.

Key features include

✔ Intelligent Probe (random results of all types of tests appear without tuning)
✔ Multimeter mode (voltage, resistance, diode and short circuit, current, frequency)
✔ Relay protection testing
✔ Oscilloscope mode
✔ Fuel Injector test
✔ 0-5V Low power supply
✔ Component activation
✔ Positive and negative test
✔ Diode Test
✔ Component testing

Step-by-Step Mastery: How do I get started?

Power Connection: Connect the device to the vehicle power battery or off-vehicle power battery through the clips on both ends.

Accessory Assembly-Assembling Probes
Circuit link: The power supply under test is normal, the device lights up and powers up normally
🔧 Select test type:Smart Test | Multimeter mode | Relay test|Fuel Injector test |Oscilloscope | 0-5V Low power supply | Component activation
Depending on the type of test mode, start testing according to the guidelines in the current mode.
🔧 View Test Result:Some modes will display readings directly, and some will activate test components as you need them.

1.Smart Test +Multimeter

Numerical measurements in Smart Probe mode will vary. If you want to measure a certain type of data individually you can use the integrated multimeter mode, which is set to a fixed mode where only a single result appears.

Smart Probe Mode: Dynamically detects and displays real-time voltage, current, and resistance values across circuits, ideal for quick troubleshooting and live diagnostics.
Integrated Multimeter Mode: Locks into a single parameter (e.g., voltage only) for focused, high-accuracy readings, perfect for detailed analysis or calibration tasks.
Use Case: Technicians can switch to Smart Probe for rapid fault-finding in complex PCBs, then toggle to Multimeter Mode to verify specific component values (e.g., resistor tolerance checks).

Automatic Detection Technology: Accurately identifies voltage, resistance and current in a circuit without having to manually switch between test modes.
Intelligent Diagnostics: This smart probe tester automatically provides detailed information on the status of circuits through simplified one-button operation, offering convenient operation.
User-Friendly: Intuitive user interface and intelligent prompts make it easy for even non-professionals to get started with professional circuit testing.

Why Choose This Detector?
Whether you’re a seasoned electrician, a hobbyist, or a technician in between, this device combines versatility, accuracy, and simplicity to transform circuit testing into a hassle-free experience—saving time, reducing risks, and delivering lab-grade results anywhere.

Mode	Functional Analysis
Volatage Test	Measure electrical potential difference (volts).
Current Test	Measure current flow (amps).
Diode Test	Check diode health and polarity.
Resistance Test	Measure resistance (ohms).
Hz Test	Measure signal frequency (e.g., AC power, PWM signals)
Polarity identification	Determine positive (+) and negative (-) terminals in DC circuits.

2. Component Activation:

New component activation Function provides three flexible activation modes to meet the testing needs of different components, while you can customise the current parameters in Setting for more precise testing and control according to the specific requirements of the component:

‘MOMENT’ Mode: Delivers an instantaneous, single-shot output ideal for testing components requiring brief activation, such as sensors or switches. Perfect for verifying responsiveness or detecting transient behaviors (e.g., button presses, motion sensors).Use Case: Automotive technicians can quickly test fuel injectors or parking sensors for immediate feedback without prolonged activation.
‘LATCH’ Mode: Provides a continuous, steady output over extended periods, tailored for components like actuators or motors that demand sustained activation to evaluate performance, endurance, or stability.Use Case: Industrial engineers can assess motor efficiency or actuator reliability under prolonged load conditions, ensuring long-term operational integrity.
‘PULSE’ Mode: Generates regular pulsed outputs to simulate cyclic activation, mimicking real-world operating conditions for components requiring dynamic testing (e.g., solenoids, relays).
Use Case: Auto Repair Engineers can test relay durability or solenoid response under repeated cycles to predict lifespan and failure points.

3. Oscilloscope Mode

The Oscilloscope Mode delivers real-time, intuitive, and ultra-precise signal analysis through dynamic coordinate charts, empowering users to instantly detect transient voltage/current fluctuations, waveform anomalies, and subtle signal distortions in circuits. This advanced functionality excels at dissecting complex signals—such as high-frequency oscillations, intricate timing sequences, or digital pulses—enabling rapid identification and resolution of circuit issues. Ideal for troubleshooting high-frequency designs, sophisticated timing systems, or digital logic circuits, it revolutionizes diagnostic workflows by combining unparalleled accuracy with effortless usability, making it an indispensable tool for engineers and technicians seeking deeper insights into circuit behavior.

Key Metrics:

DIV (Division): Indicates the scale or resolution of the oscilloscope’s grid, representing voltage/time increments per division.
Time Base: Refers to the horizontal scale setting, determining the duration represented per division (e.g., milliseconds, microseconds).
Freq (Frequency): Displays the measured frequency of the signal in Hertz (Hz).
Max (Maximum Voltage): Shows the peak voltage amplitude of the signal waveform.
Min (Minimum Voltage): Indicates the lowest voltage amplitude (e.g., trough or baseline) of the signal.
Duty Cycle: Represents the percentage of time a periodic signal (e.g., pulse wave) remains active (high) within one cycle.

4. Fuel injector Test & Cleaning:

The VDIAGTOOL V500 circuit diagnostic kit can be used to check the injection status of injectors by using the probe tip to output different pulse signals to the injector. This upgrade comes with 4 operation modes, which can be selected according to your actual needs. Correct use of the injector test mode can also achieve a cleaning effect!

• M1 – Basic Activation Mode (250ms Positive Pulse): Quickly activates injectors to test electromagnetic valve responsiveness, ideal for diagnosing stuck or open-circuit faults during initial troubleshooting.
• M2 – Dynamic Simulation Mode (7ms Positive + 20ms Negative Pulse, 1.4s Cycle): Mimics real-world injector signals to evaluate dynamic performance. The negative pulse clears carbon buildup, combining diagnostics + maintenance in one step.
• M3 – High-Frequency Cleaning Mode (4ms Positive + 10ms Negative Pulse, 1.4s Cycle): Aggressive pulse combos break down stubborn deposits, perfect for restoring clogged injectors’ spray patterns and fuel efficiency.
• M4 – Continuous Cycle Mode (7ms Positive + 20ms Negative Pulse, Repeatable): Stress-tests injector durability under high-frequency conditions. Press “ESC” to stop instantly, ensuring safe operation.
Use Case:

1.Mechanics troubleshoot rough idling or acceleration issues (M1/M2), while M3/M4 optimize injectors during routine maintenance or used car refurbishment.
2.Automotive workshops can use M2/M3 modes to diagnose misfires or lean/rich conditions, while M4 mode helps clear clogged injectors during maintenance, reducing the need for costly replacements.
3.Fleet managers preemptively test commercial vehicle injectors, minimizing breakdown risks and operational downtime.

Why Choose VDIAGTOOL V500?
It’s not just a diagnostic tool—it’s a performance optimizer! With 4 intelligent pulse modes, zero-cost cleaning, and plug-and-play simplicity, the V500 empowers mechanics, DIYers, and fleet teams to:
✅ Cut repair time with instant fault detection.
✅ Boost injector longevity through eco-safe maintenance.
✅ Slash operational costs with lab-grade accuracy in the field.
Upgrade your toolkit today—turn injector diagnostics into profit-driving opportunities! 🔧🚀

5. Low Voltage Supply Test (0-5V):

Safeguards delicate microelectronic components (e.g., microcontrollers, sensors) from voltage-induced damage during testing.
Functionality: Allows users to manually set and deliver a precise, stable 0-5VDC output, eliminating risks associated with overvoltage or fluctuating currents.
Benefits:
Prevents burnout or premature aging of sensitive components.
Ensures accurate testing without compromising system integrity.
Reduces long-term maintenance costs by avoiding component failures caused by voltage spikes.
Use Case: Ideal for testing automotive ECU sensors or IoT device microcontrollers where voltage tolerance is critical.

6. Relay Test:

Equipped with comprehensive testing capabilities, the V500 accurately detects relay switching status, assesses coil health, and evaluates contact performance to ensure seamless circuit operation. Identify issues like coil degradation, contact wear, or switching failures early, preventing costly breakdowns.

Relay failures can lead to downtime or safety risks. Shift from reactive to predictive maintenance by identifying early signs of relay degradation. Extend the life of relays, reduce unplanned downtime and lower maintenance costs through data-driven insights and timely interventions.
Intuitive interface and real-time diagnostics enable technicians to quickly test relays even in complex circuits. Generate actionable reports to document health and share results across teams for faster problem resolution.

😍VDIAGTOOL V500 ——Automotive Circuit Tester!

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.

✅ Product Update Highlights:
1. 90-degree folding screen
2. New probe extension cable
3. Removable and replaceable fuse
4. Reinforced interface
5. Test mains upgrade

🌍 Global Boundaryless｜9 languages, data in your hands!
VDIAGTOOL V500 - Your Truly Global Electical Circuit Diagnostic Partner
🗣️ 9 Languages, 1-Click Freedom
Covering 90% of the world's automotive market in your native language:
English / Chinese / German / French / Spanish / Portuguese / Italian / Russian / Polish
User Scenario Value:
✅ International Repair Team: Spanish technicians share the same equipment with Japanese colleagues, no obstacles to operation.
✅ Export car dealers: show localized diagnostic reports for overseas buyers to enhance trust.
✅ Traveling car owners: self-check Circuit at any time for cross-country self-driving, language is no longer a survival skill

What’s Included?

1 Peice V500 Circuit Tester
1 Peice Relay Test Cable
1 Peice Manual Probe Tip
1 Peice Alligator Battery Clip
1 Peice Fine Probe Tip
1 Peice Type-C Data Cable
1 PeiceProbe Tip Extension Cable
2 Peice Wire Piercing Probe
2 Peice Banana to Banana Plug Test Lead
3 Peices Fuses
1 Peice User's Manual
3m Extasion Cable

>>>WARNING:

Applying voltage to some circuits at will damage the electronic components of the vehicle.
Kindly use the vehicle manufacturer's schematics and diagnostic procedures when testing.

⚠️After-sales service system

🌐 Global Shipping | 1-Year Warranty | 30 days free return and exchange | 24/7 Tech Support