1. Introduction
The KONNWEI KW870 is a versatile diagnostic tool that combines the functionality of an OBD2 engine code reader with a 6V & 12V car battery alternator load tester. This device is designed to provide comprehensive analysis of vehicle health and battery performance, enabling quick and accurate identification of issues for various vehicles including cars, motorcycles, trucks, lawn mowers, and steamships.
It can read and clear engine fault codes, display live data streams, perform I/M readiness tests, and conduct detailed battery health assessments including cranking and charging system tests.
2. Package Contents
Please check the package contents upon receipt to ensure all items are present:
- 1 x KONNWEI KW870 Main Unit
- 1 x Battery Clamp Clip Cable (for battery tester function)
- 1 x 16-pin OBDII Cable (for OBD2 scanner function)
- 1 x Mini USB Cable (for software update and data printing)
- 1 x Nylon Bag
- 1 x User Manual
3. Setup
3.1 Device Overview
3.2 Connecting for OBD2 Diagnostics
- Locate your vehicle's 16-pin OBDII diagnostic port (usually under the dashboard).
- Connect the 16-pin OBDII cable to the KW870 device and then to your vehicle's OBDII port.
- The device will power on automatically.
3.3 Connecting for Battery Testing
- Ensure the vehicle engine is off.
- Connect the red battery clamp to the positive (+) terminal of the battery.
- Connect the black battery clamp to the negative (-) terminal of the battery.
- Connect the other end of the battery clamp cable to the KW870 device.
- The device will power on automatically.
3.4 Language Selection
The KW870 supports multiple languages. To select your preferred language:
- From the Main Menu, navigate to 'Settings' or 'Language'.
- Select your desired language from the list (English, French, German, Dutch, Spanish, Russian, Portuguese, Italian, Polish).
- Confirm your selection.
4. Operating Instructions
4.1 OBD2 Diagnostic Functions
The KW870 works on all 1996 and later OBDII compliant US, European, and Asian vehicles. It provides the following full OBD2 functions:
- Read Codes: Displays Diagnostic Trouble Codes (DTCs) to identify vehicle faults.
- Erase Codes: Clears DTCs and turns off the Check Engine Light (MIL).
- I/M Readiness: Checks the status of emission-related monitors.
- Data Stream: Displays live PCM datastream, allowing you to view real-time vehicle sensor data.
- Freeze Frame: Shows a snapshot of operating conditions at the time a fault code was set.
- O2 Sensor Test: Retrieves and views O2 sensor monitor test results.
- On-Board Monitoring: Retrieves test results for emission-related powertrain components and systems.
- Evap System (Mode $8): Initiates a test of the evaporative emission control system.
- Vehicle Information: Retrieves Vehicle Identification Number (VIN), Calibration ID (CID), and Calibration Verification Number (CVN).
- DTC Lookup: Provides definitions for generic and manufacturer-specific codes.
4.2 Battery Test Functions
The KW870 can test all 6V & 12V 100-2000CCA batteries, including Regular Flooded, AGM Flat Plate, AGM Spiral, GEL, and Lithium batteries. It supports the following battery test modes:
- Battery Test: Provides an overall analysis of the battery's health.
- Cranking Test: Measures the actual cold cranking amps (CCA) capability of the vehicle starting battery.
- Charging Test: Assesses the healthy state of the battery itself and the vehicle's charging system.
- Waveform Analysis: Displays real-time battery voltage in a waveform graph for detailed analysis.
The device provides professional advice based on battery test results:
- GOOD BATTERY: The battery is in good condition.
- GOOD, RECHARGE: Battery is good but has low current; recharge before use.
- REPLACE: Battery is at or near the end of its life; replace it.
- BAD CELL, REPLACE: Battery has internal damage, a bad cell, or a short circuit; replace it.
- CHARGE-RETEST: Unstable battery; recharge and retest to confirm status.
4.3 Product Demonstration Video
5. Maintenance
5.1 Software Updates
The KW870 offers free lifetime software updates. To update the device:
- Connect the KW870 to your PC using the Mini USB cable.
- Press any button on the KW870 to ensure it's recognized by the PC.
- Follow the instructions in the User's Manual for the update process.
- The device is typically shipped with the latest software version, so frequent updates may not be necessary.
5.2 Printing Data
You can print stored diagnostic data via the USB cable connected to your PC. This allows you to modify and print out recorded data for record-keeping or further analysis.
6. Troubleshooting
6.1 Device Not Powering On
- For OBD2 connection: Ensure the 16-pin OBDII cable is securely connected to both the device and the vehicle's OBDII port. Check if the vehicle's ignition is on (some vehicles require ignition to be on for the OBDII port to be active).
- For Battery Test connection: Ensure the battery clamps are securely connected to the correct battery terminals (red to positive, black to negative). Verify the battery has sufficient charge.
6.2 Inaccurate Battery Test Results
- Ensure battery terminals are clean and free of corrosion for a good connection.
- Verify the battery type selected on the device matches the actual battery type (e.g., Regular Flooded, AGM, GEL, Lithium).
- If the device recommends 'CHARGE-RETEST', fully charge the battery and perform the test again.
6.3 Communication Error with Vehicle
- Check all cable connections.
- Ensure the vehicle supports the OBDII protocol (vehicles manufactured after 1996 in the US, and later in Europe/Asia, are generally compliant).
- Try the device on another OBDII compliant vehicle to rule out a device issue.
7. Specifications
| Feature | Specification |
|---|---|
| Product Name | Konnwei KW870 |
| Operating Temperature | 0℃ - 50℃ |
| Storage Temperature | -20℃ - 70℃ |
| Package Size (inch) | 10.2 x 7.5 x 2.7 inches |
| Package Gross Weight | 0.9 kg |
| Battery Voltage Detection | 6V - 12V |
| Supported Battery Types | Regular Flooded, AGM Flat Plate, AGM Spiral, GEL, Lithium |
| Battery Measure Standards | CCA: 100-2000, BCI: 100-2000, CA: 100-2000, MCA: 100-2000, JIS: 26A17-24SH52, DIN: 100-1400, IEC: 100-1400, EN: 100-2000, SAE: 100-2000 |
| Supported OBDII Protocols | SAE J1850 PWM, SAE J1850 VPW, ISO9141-2, ISO14230-4 KWP, ISO15765-4 CAN |
8. User Tips
- Always ensure your vehicle's ignition is in the 'ON' position (engine off) when performing OBD2 diagnostics to avoid potential issues.
- For accurate battery testing, ensure the battery terminals are clean and the clamps have a solid connection.
- Regularly check for software updates on the Konnwei website to ensure your device has the latest features and vehicle compatibility.
- When reviewing live data streams, focus on parameters that are directly related to any fault codes present for more efficient diagnosis.
9. Warranty and Support
9.1 Warranty Policy
The Konnwei KW870 comes with a 1-year warranty from the date of purchase. Please inspect the product for any damage or defects within 72 hours of receipt. For any warranty claims or issues, please contact customer support.
9.2 Technical Support
For technical assistance, troubleshooting, or any questions regarding the operation of your Konnwei KW870, please contact the manufacturer's customer service. Contact details may be found on the official Konnwei website or in the provided user manual.