MASO Mini ELM327 OBD2 Bluetooth Car Diagnostic Scanner User Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of your MASO Mini ELM327 OBD2 Bluetooth Car Diagnostic Scanner, model mtx 7.0. This device allows you to read and clear diagnostic trouble codes (DTCs) from your vehicle's onboard computer, providing valuable insights into your car's performance and potential issues.

2. Product Overview

The MASO Mini ELM327 scanner is a compact device designed for easy use. It features indicator lights and an ON/OFF button for convenient operation.

Figure 2.1: Front view of the MASO Mini ELM327 scanner, showing the LINK, OBD, and PWR indicator lights, and the central ON/OFF button. The text 'Interface Supports all OBDII protocols' is visible at the bottom.

2.1 Components and Indicators

• OBD-II Connector: Standard 16-pin connector for interfacing with your vehicle's diagnostic port.
• ON/OFF Button: Press to power the device on or off.
• PWR Indicator: Illuminates when the device is powered on.
• OBD Indicator: Illuminates when the device is communicating with the vehicle's OBD-II system.
• LINK Indicator: Illuminates when a Bluetooth connection is established with a compatible device (e.g., smartphone, PC).

Figure 2.2: Detailed view of the 16-pin OBD-II connector, which plugs into the vehicle's diagnostic port.

2.2 Dimensions

Figure 2.3: The scanner measures approximately 45mm in length, 20mm in width, and 23mm in height, making it a compact device.

3. Setup Instructions

3.1 Locating Your Vehicle's OBD-II Port

The OBD-II port is typically located under the dashboard on the driver's side, often near the steering column. In some vehicles, it may be found in the center console or passenger side.

Figure 3.1: Illustration of typical OBD-II port locations within a vehicle's interior. Most commonly found in areas A and B (driver's side under dashboard), with some variations in C, D, or E (center console or passenger side).

3.2 Connecting the Scanner

1. Ensure your vehicle's ignition is in the OFF position.
2. Locate the 16-pin OBD-II diagnostic port in your vehicle.
3. Firmly plug the MASO Mini ELM327 scanner into the OBD-II port.
4. Turn the vehicle's ignition to the ON position (engine can remain off).
5. Press the ON/OFF button on the scanner. The PWR indicator should illuminate.

3.3 Software Installation

The scanner requires compatible software to function. A software CD is typically included with the product. Alternatively, you can download compatible applications from app stores for Android or Symbian devices, or from developer websites for PC.

• For PC (Windows XP, 7, 8): Insert the provided CD and follow the on-screen instructions to install software like ScanMaster-ELM, ScanTool.net, or PCMSCAN.
• For Android: Download applications such as Torque or DashCommand from the Google Play Store.
• For Symbian: Download OBDScope.

3.4 Bluetooth Pairing

1. With the scanner connected to the vehicle and powered on, enable Bluetooth on your smartphone or PC.
2. Search for available Bluetooth devices. The scanner will typically appear as 'OBDII' or 'ELM327'.
3. Select the device and enter the pairing code if prompted. Common pairing codes are '1234' or '0000'.
4. Once paired, the LINK indicator on the scanner should illuminate.

4. Operating Instructions

After successful setup and pairing, you can begin using the diagnostic scanner with your chosen software.

1. Launch the diagnostic software on your paired device (e.g., Torque on Android, ScanMaster-ELM on PC).
2. Within the software settings, ensure that the correct Bluetooth device (ELM327/OBDII) is selected for communication.
3. Initiate a connection within the software. The OBD indicator on the scanner should flash or illuminate steadily, indicating active communication with the vehicle.
4. Use the software to perform desired diagnostic functions, such as:
• Reading Diagnostic Trouble Codes (DTCs): Retrieve generic and manufacturer-specific codes.
• Viewing Freeze Frame Data: See vehicle conditions at the time a DTC was set.
• Monitoring Live Sensor Data: Observe real-time data from various vehicle sensors.
• Clearing Trouble Codes: Erase DTCs and turn off the Check Engine Light (MIL). Note: Clearing codes without addressing the underlying issue will likely result in the codes reappearing.
5. When finished, exit the software, turn off the scanner using the ON/OFF button, and disconnect it from the OBD-II port.

5. Compatible Software

The MASO Mini ELM327 scanner is compatible with various diagnostic software applications:

• Window version: ScanMaster-ELM, ScanTool.net, PCMSCAN
• Android version: Torque, DashCommand, EOBD
• Symbian version: OBDScope

6. Supported Protocols

The MASO Mini ELM327 scanner supports a wide range of OBD-II protocols, ensuring compatibility with most vehicles manufactured from 1996 onwards (some 1994 and 1995 models may also be compatible).

• SAE J1850 PWM (41.6Kbaud)
• SAE J1850 VPW (10.4Kbaud)
• ISO9141-2 (5 baud init, 10.4Kbaud)
• ISO14230-4 KWP (5 baud init, 10.4 Kbaud)
• ISO14230-4 KWP (fast init, 10.4 Kbaud)
• ISO15765-4 CAN (11bit ID, 500 Kbaud)
• ISO15765-4 CAN (29bit ID, 500 Kbaud)
• ISO15765-4 CAN (11bit ID, 250 Kbaud)
• ISO15765-4 CAN (29bit ID, 250 Kbaud)

7. Troubleshooting

If you encounter issues while using your MASO Mini ELM327 scanner, refer to the following common solutions:

• Device Not Powering On: Ensure the scanner is firmly plugged into the OBD-II port and the vehicle's ignition is in the ON position. Press the ON/OFF button.
• Bluetooth Connection Failure:
  • Verify Bluetooth is enabled on your smartphone or PC.
  • Ensure the scanner is powered on and within range.
  • Try unpairing and re-pairing the device.
  • Confirm the correct pairing code (e.g., '1234' or '0000') is used.
  • If using an Android head unit, ensure the scanner is connected before other Bluetooth devices to avoid conflicts.
• No Communication with Vehicle (OBD Indicator not active):
  • Check that the vehicle's ignition is ON.
  • Ensure the scanner is securely connected to the OBD-II port.
  • Verify your vehicle is OBD-II compliant (generally 1996 and newer for US vehicles).
  • Confirm the diagnostic software is correctly configured to communicate with the ELM327 device.
• Incorrect or Missing Data: Ensure the diagnostic software is up-to-date and compatible with your vehicle's make and model. Some advanced data streams may not be supported by all software or vehicles.

8. Specifications

9. Warranty and Support

This MASO product comes with a One Year Warranty. For any issues or support inquiries regarding your Mini ELM327 OBD2 Bluetooth Car Diagnostic Scanner, please contact MASO customer service. Customer satisfaction is a priority, and assistance will be provided for product-related concerns.