- Accurate Testing: The Car System Check Diagnostic Tool utilizes signals from the secondary ignition coil, ensuring precise and dependable test results for your vehicle's ignition system. - Voltage and Arc Duration Detection: This tool quickly determines whether the Coil On Plug (COP) is producing the correct voltage and arc duration, allowing for efficient diagnostics. - Visual and Audible Indicators: When the voltage is correct, the tester emits a beep and flashes a red LED light. If the arc duration is also correct, a green LED will flash, providing clear and immediate feedback. - User-Friendly Design: The Auto Coil On Plug Quick Tester is designed for effortless and rapid assessment of COP spark generation, making it suitable for both professional mechanics and DIY enthusiasts. - Versatile Applications: Ideal for diagnosing ignition issues in a variety of vehicles, this tool is perfect for quickly identifying problems in personal cars, commercial fleets, and more. Whether you're troubleshooting a misfire or ensuring optimal performance after a repair, this tester meets your needs. - Compact and Durable: Designed for ease of use, the tester is compact, making it easy to store and transport. Its robust construction ensures longevity, providing reliable performance over time. - Essential Tool for Mechanics: Whether you're a professional technician or a car owner looking to perform your own diagnostics, this tool is a must-have for accurate ignition system testing. This diagnostic tool is compatible with a wide range of vehicles and is an essential addition to any automotive toolkit.