Ignition coil and injector tester QDB-4A with stepper motor 12-24V

Ignition coil tester QDB-4A is a universal diagnostic tool for automotive electronics professionals and service centers. It allows you to test ignition coils, fuel injectors, solenoid valves, stepper motors, and sensors, quickly identifying faults without expensive equipment. The large display and simple operation ensure comfortable use in daily work.

QDB-4A Ignition Coil Tester - Key Features

• Universal Testing — Tests ignition coils (independent type, coil type, module type), as well as 12V/24V fuel injectors for gasoline and diesel vehicles.
• Solenoid Valve Diagnostics — Tests solenoid valves controlled by various duty cycles, fuel metering valves, and urea pump motors.
• Stepper Motor Control — Tests idle stepper motors, dashboard and headlight direction control stepper motors.
• Adjustable Hall Signal — Simulates various sensors, such as air conditioning pressure sensors or airflow meters, by adjusting frequency, amplitude, and duty cycle.
• Security functions — Equipped with protection against reverse polarity and overcurrent, protecting the device from damage.
• Wide Adjustment Range — Voltage, frequency, and duty cycle are adjustable within a wide range, suitable for testing various car models.

Technical specifications

• Model: QDB-4A
• Input Power: DC 8-28V
• Output Power: 0-2.5A
• Adjustable Voltage Output (VADJ Out): 0-1.5A
• DMM: DC 0-30V / 0-1MP
• PWM: 1-100KHz / 0-100%
• Stepper Motor Current: max. 15A
• Power Supply Voltage Range: 12V-24V
• Protection: Against reverse connection, against overcurrent
• Electromagnetic Coil Current Range: 0-3.5A
• Output Frequency Range: 1Hz-100kHz
• Duty Cycle Adjustment: 1%-100%
• Adjustable Voltage: 1.25V-11.5V
• Device dimensions: 17 x 9.8 x 2.8 cm
• Device weight: approximately 175 g
• Total package weight: approximately 0.39 kg
• Packaging: color box
• Package contents: 1 x QDB-4A device, 1 x power cable, 3 x test connection cables, 4 x individual connectors, 1 x stepper motor connector for idle operation, 1 x stepper motor soldering cable

Who is it suitable for and how to use it?

The QDB-4A ignition coil tester is ideal for automotive service technicians, electricians, and advanced car enthusiasts who want to independently diagnose ignition system, injector, or sensor failures. The device is used by connecting the component being tested to the appropriate connector and setting the required parameters - frequency, duty cycle, or voltage. It is recommended to check the power source voltage before use to ensure it is within the 12V-24V range.

Buyer questions

Question: Which components can be tested with the QDB-4A?
The device can be used to test ignition coils, fuel injectors for gasoline and diesel engines, solenoid valves, fuel metering valves, urea pump motors, and various stepper motors.

Question: What power source is required to use the device?
The device operates on a 8-28V DC voltage, and the recommended operating range is 12V-24V. It features protection against incorrect polarity connection and overcurrent.

Question: Is it possible to adjust the signal frequency and duty cycle?
Yes, the device allows you to adjust the output frequency from 1Hz to 100kHz and the duty cycle from 1% to 100%, while the voltage is adjustable from 1.25V to 11.5V.

The QDB-4A ignition coil tester is a reliable tool for more accurate automotive electronics diagnostics. It is suitable for both professional service centers and home workshops.

Sources: Ignition System | TopSmart store