Qdb-2a Manual Pdf May 2026

The is a high-performance diagnostic tool designed for professional technicians to troubleshoot ignition coils, fuel injectors, solenoid valves, and stepper motors. It serves as a specialized signal generator and driver, allowing you to test these critical components independently of the vehicle's Engine Control Unit (ECU). Key Functions & Specifications

Generates adjustable frequency (1Hz–100kHz), amplitude (1.3V–12V), and duty cycle (1%–100%) square waves to simulate air conditioning pressure or air flow sensors.

Tests 12V gasoline and 12-24V diesel injectors (excluding piezo types).

Compatible with module-type (built-in driver) and coil-type (no internal module) systems.

Tests idle, instrument, and headlight range stepper motors.

The device supports both 12V and 24V systems, making it versatile for gasoline and diesel vehicles.

Drives various duty cycle-controlled components like EGR valves, fuel metering valves, and electronic throttles.