30/09/2018
Konnwei KW850: Your Essential Guide to Car Diagnostics
In the world of automotive maintenance, having the right tools can make all the difference. Whether you're a seasoned DIY mechanic or just starting to get to grips with your car's inner workings, a reliable diagnostic tool is invaluable. The Konnwei KW850 has emerged as a popular choice for many vehicle owners, offering a robust set of features designed to help you understand and address common car issues. This article delves into what the Konnwei KW850 offers, how it stacks up against its successor, the KW851, and provides answers to frequently asked questions to empower you on your automotive journey.
Understanding the Konnwei KW850's Capabilities
The Konnwei KW850 is an OBDII (On-Board Diagnostics II) scanner designed to provide comprehensive diagnostic information for a wide range of vehicles. It connects to your car's OBDII port, typically located under the dashboard, allowing it to communicate with the vehicle's internal computer systems. This connection enables the KW850 to read and interpret error codes that illuminate your car's 'Check Engine' light, providing a crucial starting point for diagnosis and repair.
One of the key strengths of the KW850 is its extensive database of generic code definitions. With over 8,000 built-in definitions, it can help you accurately identify the cause of a problem, potentially saving you a trip to the mechanic and the associated costs. Furthermore, it's designed to assist you in passing annual emissions tests and SMOG CHECKS, a vital aspect of vehicle ownership in many regions. The device supports all OBDII protocols, ensuring compatibility with a vast array of domestic and imported vehicles manufactured from 1996 onwards (US-based) and 2003 onwards (EU-based and Asian models).
Key Features of the Konnwei KW850:
- Read and Clear Diagnostic Trouble Codes (DTCs): The primary function of the KW850 is to read generic and manufacturer-specific DTCs and their definitions. It also allows you to clear these codes once a fault has been rectified.
- Live Data Stream: The KW850 can display live data from various sensors and components in your vehicle. This includes graphical and numeric displays of data such as engine RPM, coolant temperature, oxygen sensor readings, and more. This feature is crucial for identifying intermittent faults or understanding the real-time performance of your car's systems.
- I/M Readiness Status: This function checks if various emissions-related systems in your vehicle are operating correctly and have completed their diagnostic cycles. This is particularly useful when preparing for emissions testing.
- O2 Sensor Test: The KW850 can perform specific tests on your oxygen sensors, which are critical for fuel efficiency and emissions control.
- EVAP Systems Test: It allows for monitoring and testing of the Evaporative Emission Control System, which prevents fuel vapours from escaping into the atmosphere.
- On-Board Monitoring Test: This feature provides access to the results of on-board diagnostic monitoring tests for specific components and systems.
- Vehicle Information: You can retrieve information such as the Vehicle Identification Number (VIN), Calibration IDs (CIN), and Calibration Verification Numbers (CVN), which can be useful for service and warranty purposes.
- User-Friendly Interface: The device typically features an intuitive interface with a clear display, making it accessible even for those with limited technical experience.
Konnwei KW850 vs. KW851: An Important Distinction
While the Konnwei KW850 is a highly capable diagnostic tool, Konnwei has introduced newer models with enhanced functionalities. The Konnwei KW851 is a notable upgrade, particularly for drivers who need to manage their vehicle's service indicators. The product description explicitly states: "Compare with KW850, New Model KW851 add oil light reset function." This means that while the KW850 can diagnose a wide array of issues, the KW851 offers the added convenience of resetting the oil service light on the instrument cluster. This function is important as the service indicator system is designed to alert the driver when the vehicle is due for scheduled maintenance.
It's important to understand that the oil service reset function is dependent on the actual condition of the vehicle. Simply resetting the light without performing the necessary maintenance will not address any underlying issues and may lead to further problems down the line. The KW851's ability to perform this reset is a valuable addition for those who perform their own oil changes or routine servicing.
For any user of the Konnwei KW850, having access to the relevant manuals is crucial for understanding its full capabilities and operating it correctly. According to the information provided, there are indeed 4 Konnwei KW850 manuals available for free PDF download. These typically include a comprehensive User Manual, which guides you through the device's features, operation, and troubleshooting. Having these manuals readily accessible can significantly enhance your experience with the KW850 and ensure you're utilising its diagnostic power to its fullest potential.
Frequently Asked Questions about the Konnwei KW850
To further assist you, here are some common questions regarding the Konnwei KW850 and its capabilities:
Does the Konnwei KW850 scan gearbox systems?
The Konnwei KW850 primarily focuses on engine system diagnostics and related emissions control systems. While it covers full OBDII/EOBD diagnostic functions for the engine system, it may not have dedicated functions for scanning complex gearbox (transmission) systems. Transmission diagnostics often require more specialised tools that can access specific transmission control modules (TCMs). However, if a transmission issue is causing a fault code related to the engine's performance or emissions, the KW850 might be able to detect and display that code.
What is the KW851 oil light reset function?
As mentioned earlier, the Konnwei KW851 includes an 'oil light reset' function. This allows users to reset the service indicator light that appears on the dashboard, signalling that the vehicle is due for an oil change or other scheduled maintenance. This is a convenient feature for those who perform their own servicing. The KW850, however, does not possess this specific function; its focus remains on broader engine diagnostics.
What types of vehicles is the Konnwei KW850 compatible with?
The Konnwei KW850 is designed to work with most 1996 US-based, 2003 EU-Based, and Asian (OBDII & CAN) domestic and imported vehicles. This includes a wide range of passenger cars, SUVs, and light trucks that are compliant with OBDII and CAN standards.
Do I need a battery or app for the Konnwei KW850?
No, the Konnwei KW850 is designed for ease of use and does not require a separate battery or the installation of complicated apps. It draws power directly from the vehicle's OBDII port, making it a simple plug-and-play device.
Can the Konnwei KW850 fix my car?
The Konnwei KW850 is a diagnostic tool, not a repair tool. It helps you identify the cause of the problem by reading error codes and providing definitions. Once you know the issue, you can then decide on the appropriate course of action, which may involve repairing or replacing a faulty part. The tool empowers you with information, but the actual repair is up to you or a qualified mechanic.
Conclusion: Empowering Your Vehicle Maintenance
The Konnwei KW850 stands as a powerful and accessible tool for any car owner looking to take a more proactive approach to their vehicle's health. Its ability to read and clear codes, display live data, and assist with emissions testing makes it an indispensable companion for routine checks and troubleshooting. While the KW851 offers an added benefit with its oil light reset function, the KW850 remains a solid choice for core diagnostic needs. By understanding its features and utilising the available manuals, you can confidently tackle many common automotive issues, saving time and money while ensuring your vehicle runs smoothly and efficiently.
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