AUTOOL DM303 Diagnostic Multimeter Car Circuit Tester

AUTOOL DM303 Auto Diagnostic Multimeter Car Circuit Tester with K/CAN/Oscilloscope/Cranking/Analog Signal/Injector Test

The automotive diagnostic multimeter is a new handheld diagnostic oscilloscope multimeter integrating digital oscilloscope, digital multimeter, automotive circuit, and automotive signal detection, using embedded digital control technology.

Warm Tips

• Please note that DM303/DM301 is shipped without batteries, you need to buy them separately. You can choose to install 4pcs 1.5A batteries, or you can install lithium battery by yourself, the lithium battery style is as below picture. If you install lithium batteries, you can charge it, but not dry batteries.

Lithium Battery

AUTOOL DM303 Manual

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What is the Difference Between DM301 & DM303?

AUTOOL Auto Diagnostic Multimeter Quick Search

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This product has multiple variants. The options may be chosen on the product page Quick View

AUTOOL DM303 Diagnostic Multimeter Car Circuit Tester

37 reviews

$129.00 – $280.00

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This product has multiple variants. The options may be chosen on the product page Quick View

AUTOOL DM301 Auto Diagnostic Multimeter Car Circuit Tester

11 reviews

$109.00

AUTOOL DM303 Automobile Diagnostic Multimeter Features

• 2.8-inch color screen display: You can adjust the screen operation, the data is clear and intuitive, suitable for a variety of working environments.
• Plastic Toolbox:  It can well organize the host and accessories, is easy to carry, and the case is drop-proof and collision-proof to effectively protect the instrument.
• Oscilloscope Function:  The waveform test has a bandwidth of 500 kHz and uses variable sampling frequency to measure slowly changing signals. It is suitable for automotive maintenance, allowing observation of various signals in automotive circuits, including motor drive signals, motor power voltage in electric vehicles, ignition signals, camshaft signals, and crankshaft signals in fuel engines.
• Auto Range & Ture RMS: Simply select the mode and connect your leads. The multimeter will automatically select the appropriate measurement depending on what it detects. With True RMS, the DM303 portable multimeter provides you with clear, accurate readings whenever and wherever you need them.
• Wiring Functions: Equipped with 8 wiring lines for various functions, including a multifunction test line, battery clip line, ignition pulse signal test line, car circuit test line, jumper, and multimeter probe. The multifunction test line checks battery voltage, fuel injectors, relays, K-wire and CAN bus signals, car ECU, and other parts.
• Multi-language: Support 12 languages, English, French, Portuguese, Polish, Spanish, Japanese, Russian, Italian, German, Dutch, Korean, and Chinese.
• 3-Year Warranty: For damage caused by non-human factors, we promise to reissue parts free of charge within 3 years.

AUTOOL DM303 Automobile Diagnostic Multimeter Functions

• Multimeter Tester: Detects 1000V DC and AC voltages, measures 200mA DC and AC and detects Resistance and Diodes.
• Oscilloscope Function: The handheld oscilloscope has a 500kHz bandwidth. One-button automatic display of the measured waveform.
• Ignition Diagnostic: Select the engine cylinder type and ignition and calculate the speed of different engine cylinders.
• Wire Instructions
• 1Hz~1MHz Signal Frequency: The measurement needs to connect to a valid signal source with a voltage greater than 1V.
• Cranking Test: The vehicle start test indicates normal operation if the minimum battery voltage is above 9.6V. If it drops below 9.6V, it may indicate battery aging.
• Injector Test: The multimeter can drive the injector for testing, and can also detect the real-time injector signal. It can test electromagnetic injectors, including GDI injectors, but doesn’t support 120V injectors
• Analog Signal Test:  The multimeter can simulate 5V square wave and 5Vpp sine wave signals, and it can also connect to a battery for 12V square wave signals using a multifunction detection cable.
• True-RMS Multimeter: Automatically ranging true mean squared (TRMS) technology for increased accuracy. The True-RMS Multimeter is ideal for a wide variety of electrical and electronic testing applications
• Auto Range Function: Automatically displays the measured data, saving the tedious process of manually selecting the range of measured values

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