DM109 Automotive Circuit Diagnostic Analyzer

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DM109 Automotive Circuit Diagnostic Analyzer

AUTOOL DM109 Automotive Circuit Diagnostic Analyzer is a professional-grade automotive electrical diagnostic tool integrating a digital multimeter, oscilloscope, component activation, and signal simulation functions. Supporting a wide 9–72V voltage range, it is suitable for conventional fuel vehicles, hybrid vehicles, electric vehicles, and various engineering vehicles. With multiple diagnostic functions integrated into one device, the DM109 provides technicians with an efficient and versatile solution for automotive electrical troubleshooting.

AUTOOL DM109 Automotive Circuit Diagnostic Analyzer Features

Comprehensive Automotive Circuit Diagnostics:AUTOOL DM109 supports voltage and polarity testing, continuity testing, circuit signal testing, resistance and diode testing, automotive indicator light and wiring tests, open-circuit testing, ground fault diagnosis, and short-circuit detection, providing comprehensive support for automotive electrical troubleshooting.

Digital Multimeter Function:With multimeter test leads connected, AUTOOL DM109 instantly transforms into a high-precision digital multimeter for more flexible testing.

It supports:

Voltage measurement with a resolution of 0.001V

Current measurement with maximum/minimum value recording

Resistance measurement

Continuity testing, including open circuits, closed circuits, intermittent circuits, and continuous circuits

Diode testing, including forward voltage drop and conduction status

Frequency measurement with simultaneous duty cycle display

Temperature measurement from -20°C to 600°C

These functions help technicians determine whether electrical components are operating normally.

Three Activation Modes for Fast Component Testing

DM109 provides three activation modes:

MOMENT — Momentary Activation

LATCH — Latching Activation

PULSE — Pulse Activation

These modes can directly activate common automotive electrical components, including blower motors, power window motors, windshield wipers, stepper motors, rear window defoggers, vehicle lights, cooling fans, and fuel injectors.

Intelligent Mode Identification:AUTOOL DM109 features an integrated intelligent identification system that automatically detects voltage and resistance, eliminating the need for manual range selection.

It also accurately identifies circuit polarity:

Positive polarity: Red indicator + audible buzzer

Negative polarity: Green indicator + audible buzzer

Simply pick up the tool and start testing, making it easy for beginners to operate.

Dual Safety Protection:AUTOOL DM109 features a dual safety protection system combining a fuse and resettable circuit breaker.When a short circuit or overload occurs, the device automatically disconnects the circuit for protection, helping safeguard both the diagnostic tool and the vehicle’s electrical system and reducing operational risks.

Wide Vehicle Compatibility:AUTOOL DM109 supports testing of 9–72V vehicle electrical systems, covering 12V, 24V, 36V, 48V, and 72V vehicle platforms.It is suitable for a wide range of vehicles and applications, including:

2.8-inch HD Color Display:AUTOOL DM109 features a 2.8-inch IPS HD color display with clear image quality, allowing test data to be easily viewed in both bright and low-light environments.

Built-in LED Auxiliary Light:The built-in LED auxiliary light eliminates the need for an additional flashlight, making it easier to inspect circuits in dark or hard-to-reach areas while keeping both hands free for improved diagnostic efficiency.

Firmware Updates:AUTOOL DM109 supports firmware upgrades via the Type-C interface. Connect the device to a computer for one-click firmware updates, allowing continuous optimization of performance and functionality and keeping the device up to date.