Designed specifically for testing computer-controlled vehicles. Tests virtually any circuit on the vehicle. The all-in-one quick check tool for no-starts. Use to verify primary and secondary ignition, pick-up sensors, fuel injectors, fuel pumps, and idle speed control circuits. Ideal for Electrical/Electronic Accessory installers. Indicates: Ground, 5V Reference, 6/12/24V, Pulsing Signals Computer and Airbag safe. Backed by a Limited Lifetime Warranty High intensity headlamp, Audible tone beeper, Super sharp stainless steel tip Durable coil cord for long reach and easy storage.