AUTOOL DM109 Automotive Circuit System Tester – Multimeter Oscilloscope 9-72V EV Hybrid
- Regular
- $281.00
- Sale
- $281.00
- Regular
- Unit Price
- per
Wide Voltage Coverage — 9V to 72V
12V
Petrol / Diesel Cars
24V
Trucks / Heavy Duty
36V
Light EV / Hybrid
48V
Mild Hybrid
72V
EV / Engineering
4 Functions in 1 Device
Digital Multimeter
- Voltage measurement (0.1V–100V)
- Current measurement (0–18A)
- Resistance (1Ω–10MΩ)
- Continuity, diode, frequency
- Temperature (-20°C to 600°C)
- Standard multimeter probe compatible
Oscilloscope
- Circuit signal waveform display
- Signal analysis for sensors and actuators
- Visualise voltage fluctuations over time
- Diagnose intermittent electrical faults
Component Activation
- 3 activation modes — direct component drive
- Test relays, fuel injectors, actuators
- Identify component vs wiring vs ECU faults
- Reduces unnecessary disassembly
Signal Simulation
- Simulate sensor signals for circuit testing
- Test ECU response to input signals
- Verify wiring integrity without live sensors
Comprehensive Circuit Fault Diagnosis
Voltage & Polarity Testing
Measure voltage levels and automatically identify circuit polarity — no manual range switching required
Continuity Testing
Quickly verify circuit continuity and identify open or broken circuits in wiring harnesses
Poor Ground Fault Detection
Detect poor ground connections — one of the most common causes of intermittent electrical faults
Short Circuit Troubleshooting
Locate short circuits and overcurrent faults quickly — with built-in dual safety protection
Indicator & Wiring Tests
Test automotive indicator lights and wiring harness integrity for complete circuit diagnosis
Open / Closed Circuit Test
Verify whether circuits are open or closed — essential for relay, switch and actuator diagnosis
3 Component Activation Modes
Mode 1
Direct Drive
Mode 2
PWM Signal
Mode 3
Pulsed Output
Smart Features
Smart Range Recognition
Automatically identifies voltage and resistance range — no manual switching needed for faster, error-free testing
2.8" IPS Colour Display
Clear true-colour display readable in both bright daylight and dim workshop conditions
LED Auxiliary Lighting
Built-in LED light eliminates the need for a separate flashlight when inspecting circuits in dark areas
Firmware Upgradeable
Connect to a PC to install firmware updates — continuous feature additions and improvements over time
Technical Specifications
| Product Name | AUTOOL DM109 Automotive Circuit System Tester |
| Display | 2.8-inch IPS true colour display |
| Working Voltage | 9V minimum — 72V maximum |
| Maximum Measuring Voltage | 100V |
| Minimum Measuring Voltage | 0.1V |
| Current Measuring Range | 0 – 18A (maximum continuous 18A) |
| Resistance Measurement | 1Ω – 10MΩ |
| Temperature Measurement | -20°C to 600°C |
| Compatible Vehicle Voltages | 12V / 24V / 36V / 48V / 72V |
| Vehicle Types | Petrol, diesel, hybrid, electric vehicles, engineering vehicles |
| Component Activation Modes | 3 modes |
| Safety Protection | 20A fuse + intelligent circuit breaker |
| Working Temperature | -20°C to 60°C (-4°F to 140°F) |
| Storage Temperature | -40°C to 70°C (-40°F to 185°F) |
| Firmware Upgrade | Via PC — continuous updates |
Key Benefits at a Glance
- 4 tools in 1 — multimeter, oscilloscope, component activation and signal simulation
- Wide 9–72V voltage range covers petrol, diesel, hybrid, EV and commercial vehicles
- Smart range recognition — automatic voltage and resistance identification, no manual switching
- 3 component activation modes to pinpoint faults in components, wiring or ECU
- Dual safety protection — 20A fuse + intelligent circuit breaker
- 2.8" IPS colour display with LED auxiliary lighting for dark environments
- Standard multimeter probe compatible for flexible testing configurations
- Firmware upgradeable via PC for ongoing feature improvements