VDIAGTOOL V500 Pro Automotive Circuit Tester – Breaker Finder, Oscilloscope & Injector Test

The VDIAGTOOL V500 Pro is a versatile, all-in-one automotive circuit tester designed for professional workshops, fleets, and on-the-go diagnostics. It covers a broad range of electrical checks in a single handheld device, helping you work more efficiently on 9-30V circuits.

Why choose the V500 Pro

• All-in-one testing: breaker/open checks, voltage, resistance, polarity, continuity, grounding, and more in one tool.
• Open-circuit locating: Mode II uses a breaker finder to identify open connections and trace wires without insulation damage.
• Oscilloscope and multimeter: visualize signals with the oscilloscope and measure voltage, resistance, diodes, current, and frequency.
• Injector testing: output pulse signals to assess injector spray status and diagnose fuel delivery concerns.
• Low-voltage power supply: a stable 0–5V source for debugging sensors, calibrating systems, and simulating inputs.
• Component activation and signal testing: power bulbs, fans, relays, wipers, and more to pinpoint root causes after ECUs return codes.
• Readable on the go: a 90° rotating screen offers clear circuit data from multiple angles, reducing blind spots.

Key capabilities

• Breaker/open testing, AC/DC voltage, resistance, and polarity checks
• Fuel injector and fuse/relay testing
• Continuity, grounding, and trailer light tests for electrical harnesses
• Oscilloscope mode for graphical signal display
• Digital circuit testing and test light functionality

Field-ready design and workflow

Whether you are chasing a blown fuse or diagnosing a sensor, the V500 Pro guides you toward likely fault points. The 0–5V power supply lets you simulate inputs and validate circuit behavior, helping you avoid misoperation and potential component damage.

The kit is built for busy days: rotate the screen to suit your angle, and use the probe tips, piercing probes, and test leads to reach connectors in tight spaces. The tool also helps you perform quick checks after pulling DTCs from ECUs.

What’s in the kit

• V500 Pro Circuit Probe Tester
• V500 Pro Short Open Circuit Finder
• Probe Tip and Fine Probe Tips
• Probe Tip Extension Cable and Wire Piercing Probes
• Banana to Banana Test Leads, Fuse, Relay Test Cable
• Alligator Battery Clip, Type-C Data Cable
• User's Manual and 3-year warranty