6-30V Automotive Circuit Tester - Multi-Function Electrical System Diagnostic Tool for Voltage, Resistance, Short Circuit & Injector Testing

Whether you’re a professional mechanic or a car owner who likes to handle minor repairs yourself, this automotive circuit tester is an indispensable tool for solving electrical system issues. It’s engineered to work with 6-30V DC power systems, making it compatible with most common vehicles on the road.This multi-function diagnostic tool simplifies complex electrical tests into straightforward steps. You can easily measure DC voltage (0~200V) and AC voltage (-100VAC~+100VAC) with high accuracy, check resistance values (0.1Ω~1MΩ) to identify poor connections, and trace short circuits without wasting fuses. The breakpoint detection function, when used with a wire finder (not included), helps locate broken wires or poor contacts efficiently.For injector maintenance, the tool offers both testing and cleaning functions. The injector test displays supply voltage, induced impulse voltage, pulse enable time, and ECM ground voltage, providing a complete overview of injector performance. The cleaning function features 4 adjustable pulse modes to remove carbon deposits, helping restore engine efficiency. Safety is a top priority—this tester is equipped with overload protection, polarity indicators, and acoustic alerts to prevent electric shock and equipment damage. The LED work light on the probe ensures visibility in dark areas, and the compact, durable design allows for easy storage and long-term use. The tool also supports multiple languages, meeting the needs of users with different language preferences.From battery health analysis (startup, charge, load tests) to trailer light and connector testing, this circuit tester covers all aspects of vehicle electrical diagnostics. It eliminates the need for multiple tools, saving you time and money. Whether you’re troubleshooting lighting issues, locating short circuits, or maintaining injectors, this reliable diagnostic tool is your go-to solution for efficient and accurate electrical system checks. Note: Please read the user manual carefully before use, follow vehicle manufacturer’s wiring diagrams and diagnostic procedures to avoid damage to vehicle electronics

• Wide Compatibility & Versatile Use: Designed for 6-30V vehicles (cars, trucks, motorcycles, small boats), this circuit tester covers all essential electrical diagnostics, including DC/AC voltage measurement, resistance testing, short circuit tracing, breakpoint detection, injector testing and cleaning
• Easy Operation & Clear Display: Equipped with a TFF color display (160*128 DPI) and intuitive buttons, the tool shows test results clearly. Simply connect to the vehicle battery via alligator clips, and use the rocker switch to activate components without jumper wires—suitable for both professionals and DIY enthusiasts
• Safety & Reliable Protection: Built-in circuit breaker with short circuit protection trips when overloaded, preventing equipment damage. Features polarity indicators (red/green LEDs) and acoustic prompts for quick identification of positive/negative circuits, ensuring safe operation during testing
• Durable & Convenient Design: Compact size (1654027MM) with a long test cable, allowing full-vehicle testing without frequent ground searching. The probe with LED work light illuminates dark areas, and the tool withstands working temperatures from 0~60°C (32~140°F) for harsh garage environments
• Comprehensive Diagnostic Functions: Quickly checks bad ground contacts, traces broken wires, analyzes battery health (startup, charge, load tests), and cleans injectors with 4 adjustable pulse modes—reducing diagnostic time and improving repair efficiency