1. Introduction
The Aermotor ELM327 V1.5 is a multi-functional, high-tech on-board electronic product designed for vehicle diagnostics. It enables monitoring and understanding of your vehicle's electronic control system by interfacing with the Engine Control Unit (ECU) computer and synchronizing data. This device not only serves as an information display system but also functions as a powerful fault detection tool, clearly presenting fault information in text form. It helps identify and address potential issues early, ensuring timely maintenance and protecting your vehicle's integrity.
2. Product Overview
The Aermotor ELM327 V1.5 is the latest scan tool compatible with personal computers and mobile phones. It supports all standard OBD-II protocols and offers broad software compatibility. Connectivity is established via Bluetooth 4.0 or Wi-Fi, allowing seamless communication with your diagnostic software.
3. Specifications
3.1 General Specifications
- Model Number: ELM327 V4.0 Bluetooth 4.0 ELM 327 1.5 OBD2
- Package Type: DIP
- Condition: New
- Application: Computer
- Type: Logic ICs
- Origin: Mainland China
- Dissipation Power: V4.0
- Customization: Yes
3.2 Physical Dimensions
- Length: 4.5 cm
- Width: 2.7 cm
- Height: 2.2 cm
3.3 Supported OBD-II Protocols
- SAE J1850 PWM (41.6 Kbaud)
- SAE J1850 VPW (10.4 Kbaud)
- ISO 9141-2 (5 baud init, 10.4 Kbaud)
- 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)
3.4 Software and System Compatibility
- Supported Operating Systems: Windows XP, Windows 7/8, Android, Symbian, WP7, PC.
- Compatible Windows Software: ScanMaster-ELM, ScanTool.net, PCMSCAN.
- Compatible Android Software: Viecar, Torque, OBD Car Doctor, Mini OBD, DashCommand, EOBD.
- Compatible iOS Software: OBD Car Doctor, EOBD.
- Compatible Symbian Software: OBDScope.
3.5 Vehicle Compatibility
The Aermotor ELM327 V1.5 works on all 1996 to 2010 cars and light trucks sold in the United States. Some 1994 and 1995 models may also be compatible.
4. Setup Instructions
4.1 Hardware Connection
- Locate your vehicle's OBD-II port. This port is typically found under the dashboard on the driver's side, but its exact location can vary by vehicle model. Consult your vehicle's owner's manual if you cannot find it.
- Plug the Aermotor ELM327 V1.5 device firmly into the OBD-II port. Ensure a secure connection.
- Once connected, the device's indicator lights should illuminate, indicating it is powered on.
4.2 Software Installation
The OBD-II software used with the Aermotor ELM327 V1.5 is typically free and available for various platforms. Refer to the 'Software and System Compatibility' section for recommended applications.
- For PC (Windows): If software is provided on a CD, insert it and follow the installation prompts. Otherwise, download a compatible application (e.g., ScanMaster-ELM) from a trusted source. Installation usually involves extracting files to a folder on your hard drive.
- For Mobile (Android/iOS): Download a compatible application (e.g., Torque for Android, OBD Car Doctor for iOS) from your device's respective app store (Google Play Store or Apple App Store).
4.3 Establishing Connection (Bluetooth/Wi-Fi)
- Turn on your vehicle's ignition (do not start the engine unless instructed by the software).
- For Bluetooth Connection:
- Enable Bluetooth on your PC or mobile device.
- Search for new Bluetooth devices and select the Aermotor ELM327 (it may appear as 'OBDII' or a similar name).
- Enter the pairing code if prompted (common codes are '1234' or '0000').
- Open your chosen diagnostic software and select the paired Bluetooth device for connection.
- For Wi-Fi Connection:
- Enable Wi-Fi on your PC or mobile device.
- Scan for available Wi-Fi networks. The ELM327 device will broadcast its own Wi-Fi network (e.g., 'OBDII' or 'WiFi_OBD').
- Connect to this network. No password is usually required, or it might be '12345678' or '88888888'.
- Open your chosen diagnostic software and select the Wi-Fi connection option.
5. Operating Instructions
Once the Aermotor ELM327 V1.5 is connected to your vehicle and paired with your diagnostic software, you can perform various operations:
5.1 Diagnostic Trouble Codes (DTCs)
- Read DTCs: The software can read both generic and manufacturer-specific diagnostic trouble codes. It will display their meaning, often drawing from a database of over 3000 generic code definitions.
- Clear DTCs: You can clear stored trouble codes and turn off the Malfunction Indicator Lamp (MIL), commonly known as the "Check Engine" light.
5.2 Real-time Sensor Data Display
The software can display current sensor data, providing a comprehensive view of your vehicle's performance. This includes, but is not limited to:
- Engine RPM
- Calculated Load Value
- Coolant Temperature
- Fuel System Status
- Vehicle Speed
- Short Term Fuel Trim
- Long Term Fuel Trim
- Intake Manifold Pressure
- Timing Advance
- Intake Air Temperature
- Air Flow Rate
- Absolute Throttle Position
- Oxygen sensor voltages/associated short term fuel trims
- Fuel Pressure
- And many other data points for fuel consumption monitoring.
5.3 Advanced Software Features (Future)
Depending on the software used, future features may include:
- Data chart display and logging for historical analysis.
- Freeze frame data capture at the moment a fault code is set.
- Continuous and discontinuous oxygen detection results.
6. Troubleshooting
If you encounter issues while using your Aermotor ELM327 V1.5 diagnostic scanner, consider the following:
- Device Not Powering On: Ensure the device is fully inserted into the OBD-II port. Check your vehicle's fuse box for any blown fuses related to the OBD-II port (though this is rare).
- Connection Issues (Bluetooth/Wi-Fi):
- Verify Bluetooth or Wi-Fi is enabled on your device.
- Ensure the ELM327 is discoverable/broadcasting its network.
- Try restarting both the ELM327 (by unplugging and re-plugging) and your mobile/PC device.
- Confirm the correct pairing code or Wi-Fi password if applicable.
- Some vehicles may require the engine to be running for full functionality, while others only need the ignition on.
- Software Not Detecting Device: Make sure you have selected the correct connection type (Bluetooth or Wi-Fi) within your diagnostic application. Ensure the application is up-to-date.
- No Data or Incorrect Readings: Confirm your vehicle is OBD-II compliant (1996 or newer for most US vehicles). Ensure the software is compatible with your vehicle's specific protocols.
- "Check Engine" Light Remains On After Clearing Codes: Some fault codes are 'hard' codes that indicate an ongoing issue. These will reappear immediately after clearing until the underlying problem is resolved.
7. User Tips
- Choose the Right App: The performance and features of your ELM327 scanner heavily depend on the diagnostic application you use. Experiment with different compatible apps (e.g., Torque for Android, OBD Car Doctor for iOS/Android) to find one that best suits your needs and vehicle.
- Keep Software Updated: Regularly update your chosen diagnostic software to ensure compatibility with the latest vehicle models and to benefit from new features and bug fixes.
- Understand DTCs: While the software provides definitions, a quick online search for specific Diagnostic Trouble Codes (DTCs) can offer more detailed information about potential causes and common fixes for your vehicle model.
- Safety First: Never attempt to diagnose or repair your vehicle while driving. Always perform diagnostics in a safe, stationary location.
8. Warranty and Support
For any technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact the seller or manufacturer directly. Ensure you have your purchase details and product model number readily available when seeking support.
