The QDB-5A is a multi-functional diagnostic tool designed for advanced troubleshooting of automotive electrical components. Instead of guessing if a part is faulty, this tool allows you to manually drive and test actuators or simulate sensor signals to verify the integrity of the vehicle's ECU and wiring.

It is particularly effective for testing high-power components like ignition coils and injectors, as well as delicate parts like stepper motors. This handheld device helps technicians quickly pinpoint whether a problem lies within the component itself or the vehicle's control system.

Checkable Modules & Component Details

The QDB-5A is capable of checking a wide variety of automotive electronic modules:

• Ignition Systems:

  • Ignition Coils: Supports testing of 2-wire, 3-wire, and 4-wire ignition coils.

  • Ignition Modules: Can drive independent ignition modules to verify spark strength and timing.

• Fuel & Emission Actuators:

  • Fuel Injectors: Tests both standard petrol injectors and 12V diesel fuel injectors (solenoid type).

  • Electromagnetic Valves: Drives various solenoid valves, such as fuel metering valves, canister purge valves, and EGR valves.

• Motorized Actuators:

  • Stepper Motors: Specifically designed to test idle speed stepper motors, instrument cluster motors, and headlight range motors.

  • DC Motors: Can drive small DC motors used in electronic throttles or pump assemblies.

• Sensor Simulation:

  • Hall & Magnetic Sensors: Simulates square wave signals to test ECU response for Crankshaft, Camshaft, and Vehicle Speed sensors.

  • PWM Signals: Outputs adjustable PWM signals to test components that rely on duty-cycle modulation.

Key Features

1. Adjustable Parameters: Easily modify the output frequency, duty cycle, and voltage to match the specific requirements of the component under test.

2. Built-in Protection: Features internal short-circuit and over-current protection to prevent damage to the tester or the vehicle's electrical system.

3. Signal Conversion: Can act as a signal generator to simulate various engine sensors, helping you diagnose ECU "no-start" conditions.

4. Portable Design: Lightweight and handheld, making it ideal for both shop-floor diagnostics and mobile roadside assistance.

Technical Specifications

• Power Supply: 12V - 24V DC.

• PWM Frequency Range: 1Hz to 100KHz.

• Duty Cycle Range: 1% to 100%.

• Signal Voltage: 5V to 24V adjustable.