1. Introduction
The AUTOOL DM303 is a versatile hand-held automotive diagnostic multimeter that integrates the functions of a digital oscilloscope and a digital multimeter. Designed with embedded digital control technology, it provides comprehensive diagnostic capabilities for various automotive electrical systems. This device is ideal for professional technicians and automotive enthusiasts for accurate and efficient vehicle maintenance and troubleshooting.
2. Principales caractéristiques
The AUTOOL DM303 offers a wide range of diagnostic functions:
- Vol CC/CAtage Mesure
- Mesure de courant CC/AC
- Test de résistance
- Mesure en fréquence
- Test d'oscilloscope
- Automotive Circuit Test
- Car Start-up Test
- Test d'injecteur
- Automobile Relay Test
- Analog Signal Test
- Ignition Pulse Signal Test
- K/CAN Line Data Analysis
The device features a 2.8-inch color LCD screen with a resolution of 320*240, offering adjustable brightness for clear and intuitive data display in various working environments.
It supports 13 languages: Deutsch, Spanish, French, Italian, English, Japanese, Portuguese, Dutch, Polish, Russian, Korean, Chinese, and Traditional Chinese.
3. Contenu du colis
The AUTOOL DM303 comes with the following items, neatly stored in a portable toolbox:
- Unité principale AUTOOL DM303
- Multi-functional Detection Line (C01-1 to C01-SIN, C01-S1, C01-S2)
- Battery Clip Line (C02)
- Ignition Pulse Signal Detection Line (C03)
- Probe Terminal (C04-2)
- Jumper (Black) (C05)
- Jumper (Green) (C06)
- Jumper (Yellow) (C07)
- Manuel d'utilisation
- Boîte à outils portable
4. Produit terminéview
The DM303 is designed for ease of use and durability. Below is an overview ses principaux composants :
- Écran d'affichage : Écran LCD couleur de 2.8 pouces.
- Indicateur d'alimentation : Indique l'état d'alimentation de l'appareil.
- Touche d'alimentation: Allume/éteint l'appareil.
- Hold key: Freezes the current reading on the screen.
- Touche directionnelle : Used for navigation within menus.
- Touche retour : Permet de revenir au menu ou à l'écran précédent.
- La touche Entrée: Confirme la sélection ou ouvre un menu.
- 10A current input: Input jack for high current measurements.
- mA/uA measurement input: Input jack for low current measurements.
- Légende d'éclairage : Activates the device's built-in light.
- ZERO / F1 Function key: Zeroes readings or acts as Function 1.
- F2 Function key: Acts as Function 2.
- Measurement mode switching: Bouton permettant de sélectionner les différents modes de mesure.
- Diode, volumetage, resistance, frequency measurement input: Common input jack for these functions.
- COM measurement input: Common ground input jack.
- Interfaçage DB15 : Connector for specialized diagnostic cables.
- SD card slot / data interface: For software updates and data storage.
- Lumière: Éclairage intégré pour les zones de travail.
- Support arrière : Allows the device to stand upright for hands-free operation.
5. Spécifications
| Attribut | Valeur |
|---|---|
| Nom du modèle | DM303 |
| Nom de marque | Autory |
| Origine | Chine continentale |
| Certification | CE |
| Certification d'essais externes | ce |
| Écran couleur | Écran LCD 2.8 pouces |
| Résolution | 320*240 |
| Voltage Plage de mesure | 0-1000 V CC, 0-700 V CA. |
| Gamme de mesure de courant | 0-20 A, 0-200 mA |
| Plage de mesure de la résistance | 0-1 MΩ |
| Plage de mesure de fréquence | 1 Hz à 1 MHz |
| Courant de commande de circuit automobile | 0-5A |
| Sortie du signal de commande de l'injecteur | 500-6000 tr/min |
| Température de fonctionnement | 0~40°C (32~104°F) Humidity: ≤75% |
| Température de stockage | 10~50°C (14~122°F) Humidity: ≤70% |
| Altitude | 2000 m |
| Longueur de l'article | 26cm |
| Largeur de l'article | 20cm |
| Hauteur de l'article | 11cm |
| Poids de l'article | 1.7 kg |
| Impédance d'entrée (Voltage) | 2~3MΩ (<160V); 10MΩ (>160V) |
| Vol d'entrée max.tage | 1000Vpp |
| Bande passante analogique | 500KHz |
| Fusible de borne 10A | 15A self-recovery fuse (Max 20A) |
| fusible terminal mA/µA | 0.5A self-recovery fuse (Max 200mA) |
6. Guide de configuration
6.1 Installation de la batterie
The AUTOOL DM303 is not equipped with batteries for logistics and transportation reasons. You will need to purchase 4pcs 1.5A batteries (AA size) or a 3.7V, 1200 mAh lithium battery separately.
- Localisez le compartiment à piles à l'arrière de l'appareil.
- Ouvrez le couvercle du compartiment à piles.
- Insert 4pcs 1.5A batteries, ensuring correct polarity (+/-).
- Fermez soigneusement le couvercle du compartiment à piles.
Note: Without batteries, the device will turn off automatically when disconnected from the charging cable.
6.2 Mise sous/hors tension
Appuyez et maintenez enfoncé le Touche d'alimentation (labeled '3' in the Product Overview diagram) to turn the device ON or OFF.
7. Mode d'emploi
The AUTOOL DM303 features an intuitive interface for selecting and performing various tests. Use the Touches de direction (5) to navigate through menus and the Touche Entrée (7) to confirm selections.
7.1 Navigation générale
- Utilisez le Touches de direction (Up, Down, Left, Right) to move the cursor or change values.
- Presse OK (Enter key) to select an option or confirm an action.
- Presse ÉCHAP (Return key) to go back to the previous screen or cancel an operation.
- Utiliser F1 (ZÉRO) et F2 for specific function adjustments as indicated on the screen.
- Le PRISE key (4) can be used to freeze the current measurement on the display.
7.2 Mode multimètre
Select 'Multimeter' from the main menu. This mode allows you to measure AC/DC voltage, current, resistance, diode forward voltage drop, on-off continuity, and frequency. Connect the appropriate probes to the device's input jacks (8, 9, 14, 15) and to the circuit under test.
7.3 Mode oscilloscope
Select 'Oscilloscope' from the main menu. This mode provides a complete intelligent measurement system for signal input, data sampling, processing, and automatic search. It has a waveform test bandwidth of 500KHz and a variable sampling frequency for measuring slowly varying signals. It is suitable for observing various automotive signals such as engine ignition pulse, camshaft, crankshaft, wheel speed sensor, and oxygen sensor signals.
7.4 Test de circuit automobile
This function allows online testing of low voltage circuits, detection of high voltage or line leakage, and output of power supply voltage. It can also output power voltage to test car components or lower voltage to drive components like lights. It can test battery voltage during vehicle startup to assess the starting system and battery condition.
7.5 Car Start-up Test (Cranking Test)
Connect the device to the vehicle's battery using the appropriate cables. Select 'Cranking Test' from the menu. The device will monitor current and minimum voltage during engine cranking to evaluate the battery and starter motor performance.
7.6 Test d'injecteur
Connect the injector to the device using the specialized terminals (C01-2). Select 'Injector Test' to simulate engine speed and drive the fuel injection nozzle, allowing for functional testing of the injector.
7.7 Automobile Relay Test
Connect the relay to the device using the specialized terminals (C01-2). Select 'Relay Test' to check the output status and contact resistance of the relay.
7.8 Test de signal analogique
This function is used for car ECU detection. It can simulate square wave and sine wave outputs, which can be used to test ECU inputs or drive certain components.
7.9 Ignition Pulse Signal Test
Use the Ignition Pulse Signal Detection Line (C03) to connect to the ignition system. Select 'Ignition Pulse Signal Test' to analyze the ignition pulse waveform and characteristics.
7.10 K/CAN Line Data Analysis
Connect the device to the vehicle's K-line or CAN bus using the appropriate cables (C01-K, C01-CAN+, C01-CAN-). Select 'K/CAN Line Data' to monitor and analyze data signals on these communication lines.
7.11 Mesure de fréquence
Select 'Frequency Measurement' from the multimeter mode or a dedicated frequency function. Connect the probes to the signal source to measure its frequency.
8. Entretien
8.1 Mise à niveau du logiciel
The instrument supports software updates via an SD card. To update the software:
- Download the latest application software file from the official AUTOOL website.
- Copiez le fichier téléchargé file sur une carte SD.
- Insert the SD card into the device's SD card slot (17).
- Suivez les instructions à l'écran pour terminer la mise à jour du logiciel.
8.2 Nettoyage et stockage
- Gardez l'appareil propre et sec. Utilisez un soft, damp Essuyer l'extérieur avec un chiffon. Ne pas utiliser de nettoyants abrasifs ni de solvants.
- Ensure all ports and connectors are free from dust and debris.
- When not in use, store the main unit and all accessories in the provided portable toolbox. The toolbox is designed to protect the instrument from falls and impacts.
9. Dépannage
- L'appareil ne s'allume pas : Check if batteries are correctly installed and charged. Ensure the power key is pressed and held sufficiently.
- Lectures inexactes : Verify that all connections are secure and probes are properly attached to the circuit. Ensure the correct measurement mode is selected.
- L'écran est sombre ou illisible : Adjust the screen brightness through the device settings.
- L'appareil se bloque ou ne répond plus : Try restarting the device by holding the power key. If the issue persists, ensure the software is up to date.
10. Conseils d'utilisation
- Always ensure the device is powered off before connecting or disconnecting probes to prevent accidental short circuits or damage.
- For precise current measurements, especially low currents, ensure the circuit is properly isolated and the correct input jack (10A or mA/uA) is used.
- When using the oscilloscope function, familiarize yourself with typical waveforms for the components you are testing to quickly identify anomalies.
- Utilize the back bracket (19) for hands-free operation, especially when working in tight engine compartments.
11. Garantie et assistance
The AUTOOL DM303 comes with a 3-year warranty, ensuring quality assurance. For technical support, service, or warranty claims, please contact your authorized AUTOOL dealer or visit the official AUTOOL website pour les coordonnées.
