{"product_id":"konnwei-kw420-fullsystem-diagnosverktyg-for-honda","title":"KONNWEI KW420 – Full System Diagnostic Tool for Honda","description":"\u003ch2\u003eKONNWEI KW420 – Full System Diagnostic Tool for Honda + Universal OBD2 Engine Analysis + Digital Battery Tester (Oil Reset, EPB, DPF, ETS, Battery Match)\u003c\/h2\u003e\n\u003c!-- KORTVERSION 200–300 ORD (SEPARAT SAMMANFATTNING ÖVERST) --\u003e\n\u003csection\u003e\n\u003cp\u003eThe \u003cstrong\u003eKONNWEI KW420\u003c\/strong\u003e is a versatile diagnostic tool that combines three practical functions in one unit: \u003cstrong\u003e(1) full system diagnostics for Honda\u003c\/strong\u003e, \u003cstrong\u003e(2) universal OBD2\/EOBD engine analysis\u003c\/strong\u003e for OBD2-compliant cars, and \u003cstrong\u003e(3) digital battery tester\u003c\/strong\u003e for 12V starter batteries. For those working with Honda (or frequently troubleshooting check engine lights), this means you can read and clear fault codes, view live data, check readiness, and perform important service procedures – without needing to switch between multiple tools.\u003c\/p\u003e\n\u003cp\u003eAs a \u003cstrong\u003efull system scanner for Honda\u003c\/strong\u003e, the KW420 can diagnose multiple control units and systems, such as \u003cstrong\u003eengine\u003c\/strong\u003e, \u003cstrong\u003eABS\u003c\/strong\u003e, \u003cstrong\u003eSRS\/airbag\u003c\/strong\u003e, \u003cstrong\u003eTransmission\u003c\/strong\u003e, \u003cstrong\u003eSAS\u003c\/strong\u003e, \u003cstrong\u003eESP\u003c\/strong\u003e, \u003cstrong\u003eEPB\u003c\/strong\u003e, and other systems (according to the product description). It also includes special functions that simplify workshop tasks: \u003cstrong\u003eOil Reset\u003c\/strong\u003e, \u003cstrong\u003eEPB reset\u003c\/strong\u003e (for brake work), \u003cstrong\u003eBattery Match\u003c\/strong\u003e (battery adaptation\/matching), \u003cstrong\u003eDPF reset\u003c\/strong\u003e, and \u003cstrong\u003eETS reset\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eOn the universal OBD2 side, you get classic functions like \u003cstrong\u003eRead Codes\u003c\/strong\u003e, \u003cstrong\u003eErase Codes\u003c\/strong\u003e, \u003cstrong\u003eLive Data\u003c\/strong\u003e, \u003cstrong\u003eFreeze Frame\u003c\/strong\u003e, \u003cstrong\u003eI\/M Readiness\u003c\/strong\u003e, \u003cstrong\u003eO2 Monitor Test\u003c\/strong\u003e, \u003cstrong\u003eOn-Board Monitor Test\u003c\/strong\u003e, \u003cstrong\u003eComponent Test\u003c\/strong\u003e, \u003cstrong\u003eVehicle Info (VIN\/CID\/CVN)\u003c\/strong\u003e, \u003cstrong\u003eDTC Lookup\u003c\/strong\u003e, \u003cstrong\u003eReview Data\u003c\/strong\u003e, and \u003cstrong\u003ePrint Data\u003c\/strong\u003e (uploading stored codes to a computer, as described). Everything is displayed on a clear \u003cstrong\u003e2.8\" TFT color screen\u003c\/strong\u003e, and the device supports multiple languages (English, German, French, Italian, Polish, Spanish, Russian). In short: an \"all-in-one\" tool for Honda jobs, check engine light diagnostics, and battery health – with clear menus and workshop-relevant functions. ✅\u003c\/p\u003e\n\u003c\/section\u003e\n\u003chr\u003e\n\u003csection\u003e\n\u003ch2\u003eIntroduction – what is KONNWEI KW420 and when is it most useful?\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eKONNWEI KW420\u003c\/strong\u003e is designed to be a practical everyday tool when you need to diagnose vehicles quickly, clearly, and methodically. The device is described as a combination of: \u003cstrong\u003euniversal engine analyzer\u003c\/strong\u003e (OBD2\/EOBD), \u003cstrong\u003efull system diagnostic scanner for Honda\u003c\/strong\u003e, and \u003cstrong\u003edigital battery tester\u003c\/strong\u003e. This makes it particularly interesting for those who:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWork with \u003cstrong\u003eHonda\u003c\/strong\u003e and want to read more systems than just engine control.\u003c\/li\u003e\n\u003cli\u003eWant a convenient device to \u003cstrong\u003eread\/clear fault codes\u003c\/strong\u003e and \u003cstrong\u003eturn off the check engine light\u003c\/strong\u003e after correct intervention.\u003c\/li\u003e\n\u003cli\u003eNeed \u003cstrong\u003elive data\u003c\/strong\u003e in text or graphs to understand how the car behaves in real-time.\u003c\/li\u003e\n\u003cli\u003eWant to perform common service actions such as \u003cstrong\u003eOil Reset\u003c\/strong\u003e and \u003cstrong\u003eEPB reset\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eWant to check \u003cstrong\u003ebattery health\u003c\/strong\u003e and perform system tests related to starting and charging (according to the battery test functions).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe KW420 also has a clear advantage for troubleshooting: its integrated fault code descriptions and functions like freeze frame, readiness, and monitor tests allow you to go from \"light is on\" to a more structured diagnosis – with a better chance of finding the correct cause, faster.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eSpecifications (bullet points)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e KONNWEI KW420\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Universal Car Engine Analyzer + Full System diagnostic scanner for HONDA + digital battery tester\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e 0.77W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e 2.8 inch TFT Color Display\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLanguages:\u003c\/strong\u003e English, German, French, Italian, Polish, Spanish, Russian\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Guangdong, China\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e KONNWEI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction 1:\u003c\/strong\u003e Full system diagnosis for HONDA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction 2:\u003c\/strong\u003e Engine analyzer for universal OBD2 compliant car\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction 3:\u003c\/strong\u003e Digital battery tester\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecial Functions:\u003c\/strong\u003e Oil reset, Battery match, EPB reset, DPF reset, ETS reset\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eKeywords and variants (H2\/H3 for SEO and clarity)\u003c\/h2\u003e\n\u003cp\u003eThe KW420 can be described in several ways depending on what you want to do: \u003cstrong\u003eHonda diagnostic tool\u003c\/strong\u003e, \u003cstrong\u003efull system fault code reader for Honda\u003c\/strong\u003e, \u003cstrong\u003eOBD2 fault code reader\u003c\/strong\u003e, \u003cstrong\u003eOBD2 scanner\u003c\/strong\u003e, \u003cstrong\u003eengine analyzer\u003c\/strong\u003e, \u003cstrong\u003eOBD2\/EOBD diagnostic tool\u003c\/strong\u003e, \u003cstrong\u003e12V battery tester\u003c\/strong\u003e or \u003cstrong\u003eservice reset tool\u003c\/strong\u003e. This product text naturally uses these terms because different customers search in different ways.\u003c\/p\u003e\n\u003ch3\u003eHonda full system diagnosis\u003c\/h3\u003e\n\u003cp\u003eWhen searching for \"full system,\" it often means you want to read more systems than just the engine, such as ABS and airbag (SRS), as well as perform service functions like oil reset and EPB reset.\u003c\/p\u003e\n\u003ch3\u003eUniversal OBD2 engine analysis\u003c\/h3\u003e\n\u003cp\u003eThe OBD2 part is primarily for \u003cstrong\u003eengine-related\u003c\/strong\u003e diagnosis on OBD2-compliant vehicles: reading\/clearing codes, live data, freeze frame, and readiness.\u003c\/p\u003e\n\u003ch3\u003eDigital battery tester\u003c\/h3\u003e\n\u003cp\u003eThe battery testing part is for checking 12V starter batteries and related start\/charge system tests as described in the product information.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eFull system diagnosis for Honda – which systems can the KW420 work with?\u003c\/h2\u003e\n\u003cp\u003eAccording to the product description, the \u003cstrong\u003eKONNWEI KW420\u003c\/strong\u003e is a professional \u003cstrong\u003efull system diagnostic scanner\u003c\/strong\u003e for the Honda series. It supports “all system diagnostics,” including (but not limited to):\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine \/ engine control\u003c\/strong\u003e (incl. engine light)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eABS\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSRS\u003c\/strong\u003e (airbag\/components connected to the SRS system)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransmission\u003c\/strong\u003e (transmission-related diagnosis, as described)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSAS\u003c\/strong\u003e (steering angle-related functions\/systems, as listed)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eESP\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEPB\u003c\/strong\u003e (Electric Park Brake)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOther systems\u003c\/strong\u003e (“other systems” as described)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt is important to note that \"full system\" can vary depending on the Honda model, year of manufacture, and equipment level. Diagnostic tools can often read different amounts depending on which control units are actually present in the car and how they communicate. The KW420 is expressly positioned as a tool for the Honda series, but exact system coverage may vary.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eSpecial functions for Honda – service, resets and matches\u003c\/h2\u003e\n\u003cp\u003eThe KW420 is equipped with several \u003cstrong\u003especial functions\u003c\/strong\u003e that are particularly common in workshop workflows. Below is a clear overview of each function and the situations in which it is used, based on the product's own function descriptions.\u003c\/p\u003e\n\u003ch3\u003e1) Oil Reset \/ Oil service reset\u003c\/h3\u003e\n\u003cp\u003eThe Oil Reset function is used to reset the car's oil life\/service system, which calculates the appropriate oil change interval depending on driving conditions and climate (as described). This function is typically used:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWhen the \u003cstrong\u003eservice light is on\u003c\/strong\u003e and service has been performed – the service indicator then needs to be reset to start a new service cycle.\u003c\/li\u003e\n\u003cli\u003eAfter you have changed \u003cstrong\u003eengine oil\u003c\/strong\u003e or parts\/components that monitor oil life – the service indicator then needs to be reset.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTip:\u003c\/strong\u003e Only reset after service has actually been performed. A reset without performed service can complicate future maintenance planning.\u003c\/p\u003e\n\u003ch3\u003e2) EPB Replacement \/ EPB reset (Electric Parking Brake)\u003c\/h3\u003e\n\u003cp\u003eEPB reset is used during brake work on vehicles with an electric parking brake. The product text describes the scenario: when the brake pad wears, the sensor cable can signal the need for replacement, and after pad replacement, a reset may be required to avoid warnings\/alarms. According to the description, the reset should be performed in situations such as:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBrake pads and wear sensor are replaced.\u003c\/li\u003e\n\u003cli\u003eThe brake pad indicator light is on.\u003c\/li\u003e\n\u003cli\u003eThe sensor circuit has been short-circuited and restored.\u003c\/li\u003e\n\u003cli\u003eServo motor (EPB-related) is replaced.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e EPB work can be safety-critical. Always follow correct mechanical procedures and use the correct torque\/workshop manual.\u003c\/p\u003e\n\u003ch3\u003e3) BAT Match \/ Battery Match (battery matching)\u003c\/h3\u003e\n\u003cp\u003eThe BAT Match function is described as a reset of the battery monitoring unit, where previous \"low battery\" information is cleared and battery matching is performed. According to the description, it should be used when:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe \u003cstrong\u003emain battery is replaced\u003c\/strong\u003e: matching is needed to clear old low-battery information and prevent control modules from detecting false information.\u003c\/li\u003e\n\u003cli\u003eA \u003cstrong\u003ebattery monitoring sensor\u003c\/strong\u003e affects readings: matching can help the module and sensor work together and measure battery usage more accurately.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe product text mentions that if a control module detects false battery information, certain electrical functions may be affected, such as start\/stop, sunroof, and power windows automation. Battery matching can therefore be important after battery replacement on certain systems.\u003c\/p\u003e\n\u003ch3\u003e4) DPF reset\u003c\/h3\u003e\n\u003cp\u003eThe KW420 lists \u003cstrong\u003eDPF reset\u003c\/strong\u003e as a special function. DPF-related reset\/service functions are normally used in conjunction with work around the particulate filter and related systems. Exact procedures may vary depending on the model and engine. Always follow the vehicle's service procedure.\u003c\/p\u003e\n\u003ch3\u003e5) ETS reset\u003c\/h3\u003e\n\u003cp\u003eThe KW420 also lists \u003cstrong\u003eETS reset\u003c\/strong\u003e as a special function. The exact meaning and availability may vary between models and markets. Use the function according to the tool's menu logic and the vehicle's service needs.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eUniversal OBD2\/EOBD engine diagnosis – all OBDII functions supported by KW420\u003c\/h2\u003e\n\u003cp\u003eIn addition to the Honda full system mode, the KW420 supports \u003cstrong\u003eall OBDII functions\u003c\/strong\u003e as per the product description. This means you can also use the device as a universal OBD2 fault code reader (engine-related diagnosis) on OBD2-compliant cars. Below is the list of functions, with explanations in English.\u003c\/p\u003e\n\u003ch3\u003e1) Read Codes (Read fault codes)\u003c\/h3\u003e\n\u003cp\u003eThis function is used to identify which part of the emission\/engine-related system has registered a fault. This is the first step in diagnosis: read codes, document, and link codes to symptoms and measured data.\u003c\/p\u003e\n\u003ch3\u003e2) Erase Codes (Clear fault codes)\u003c\/h3\u003e\n\u003cp\u003eAfter you have read fault codes and performed repairs, you can clear the codes. The product text states that the ignition should be in the ON position and the engine off. Important notes provided:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBefore clearing: \u003cstrong\u003eretrieve and write down the fault codes\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eAfter clearing: \u003cstrong\u003eread again\u003c\/strong\u003e or turn the ignition on and read the codes again to see if anything remains.\u003c\/li\u003e\n\u003cli\u003eIf codes remain: troubleshoot according to the \"factory diagnosis guide,\" clear again, and recheck.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e3) Live Data (Live data)\u003c\/h3\u003e\n\u003cp\u003eRetrieves and displays real-time data and parameters from the vehicle's ECU. The product text mentions that live data can be displayed as text or graphs, which is practical for observing trends and reacting to symptoms at idle, acceleration, or under load.\u003c\/p\u003e\n\u003ch3\u003e4) View Freeze Frame (Freeze frame)\u003c\/h3\u003e\n\u003cp\u003eWhen an emission-related fault occurs, the car can save a \"snapshot\" of operating conditions at the moment of the fault. This is called freeze frame. The note in the text states that if DTCs are cleared, freeze frame data may not remain, depending on the vehicle.\u003c\/p\u003e\n\u003ch3\u003e5) I\/M Readiness (Readiness \/ inspection readiness)\u003c\/h3\u003e\n\u003cp\u003eI\/M Readiness shows whether emission-related monitors have run and are complete, and which have not yet completed. This function can also be used after repair to verify that the monitor status has changed and the system is ready.\u003c\/p\u003e\n\u003ch3\u003e6) O2 Monitor Test (O2 sensor test)\u003c\/h3\u003e\n\u003cp\u003eDisplays the results of the ECU's most recent O2 test. The product text emphasizes that these are not \"live values\" but test results, and that the list varies depending on the vehicle. Not all vehicles support the Oxygen Sensors screen.\u003c\/p\u003e\n\u003ch3\u003e7) On-Board Monitor Test (Built-in monitor tests)\u003c\/h3\u003e\n\u003cp\u003eCan be used to read results of monitoring tests for specific components\/systems in OBD.\u003c\/p\u003e\n\u003ch3\u003e8) Component Test (Component test)\u003c\/h3\u003e\n\u003cp\u003eAllows you to initiate a leak test for the vehicle's component system. The tool does not perform the leak test itself, but signals the car's computer to initiate the test. The product text recommends referring to the vehicle's service\/repair manual for necessary procedures.\u003c\/p\u003e\n\u003ch3\u003e9) Vehicle Info (Vehicle info: VIN, CID, CVN)\u003c\/h3\u003e\n\u003cp\u003eDisplays vehicle information: \u003cstrong\u003eVIN\u003c\/strong\u003e (Vehicle Identification Number), \u003cstrong\u003eCID\u003c\/strong\u003e (Calibration ID), and \u003cstrong\u003eCVN\u003c\/strong\u003e (Calibration Verification Number).\u003c\/p\u003e\n\u003ch3\u003e10) BAT Check (Battery check)\u003c\/h3\u003e\n\u003cp\u003eThe OBDII function list also includes \u003cstrong\u003eBAT Check\u003c\/strong\u003e. How it is presented may vary, but the purpose is to provide battery-related control\/indication via the tool.\u003c\/p\u003e\n\u003ch3\u003e11) Modules Present (Modules present \/ protocol)\u003c\/h3\u003e\n\u003cp\u003eDisplays the vehicle's communication protocol type (according to the text) and can indicate which modules\/systems are \"present\" in the communication.\u003c\/p\u003e\n\u003ch3\u003e12) DTC Lookup (Fault code lookup)\u003c\/h3\u003e\n\u003cp\u003eYou can enter a fault code and view a more detailed description. This is practical if you get a code and want more information directly in the tool.\u003c\/p\u003e\n\u003ch3\u003e13) Review Data (Review data)\u003c\/h3\u003e\n\u003cp\u003eCan replay stored fault events (\"replay failures\") that have been recorded.\u003c\/p\u003e\n\u003ch3\u003e14) Print Data (Print \/ upload data)\u003c\/h3\u003e\n\u003cp\u003eThe product text indicates that the tool can \u003cstrong\u003eupload stored fault codes to a computer\u003c\/strong\u003e. This allows you to document and archive diagnostic results depending on your work method and available software.\u003c\/p\u003e\n\u003cp\u003eThe KW420 is also described as having an integrated library of fault code definitions, I\/M readiness indicator, EVAP-related tests (evaporative control system test), and the ability to \"surveillance on board,\" read VIN information, review, and print data – which in summary are \"features that other obd readers should have.\"\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eDigital battery tester (12V) – functions, battery types and test content\u003c\/h2\u003e\n\u003cp\u003eThe KW420 has an integrated \u003cstrong\u003ebattery tester\u003c\/strong\u003e which, according to the product text, can test \"all car starting lead-acid batteries,\" including: \u003cstrong\u003eordinary lead-acid\u003c\/strong\u003e, \u003cstrong\u003eAGM flat batteries\u003c\/strong\u003e, \u003cstrong\u003eAGM spiral batteries\u003c\/strong\u003e, and \u003cstrong\u003egel batteries\u003c\/strong\u003e. It is stated to be suitable for several types of vehicles\/equipment: \u003cstrong\u003ecars\u003c\/strong\u003e, \u003cstrong\u003emotorcycles\u003c\/strong\u003e, \u003cstrong\u003etrucks\u003c\/strong\u003e, \u003cstrong\u003elawnmowers\u003c\/strong\u003e, and \u003cstrong\u003esteamships\u003c\/strong\u003e (according to the text).\u003c\/p\u003e\n\u003ch3\u003eBattery test – according to battery test specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem voltage:\u003c\/strong\u003e 12V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest results:\u003c\/strong\u003e Good, Recharge, or Replace\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRating information:\u003c\/strong\u003e Cold Starting Current (CCA), DIN, EN, and IEC (related to battery rating)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal resistance:\u003c\/strong\u003e (mΩ)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLife percentage:\u003c\/strong\u003e (%)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCranking system test:\u003c\/strong\u003e test of starting system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCharging system test:\u003c\/strong\u003e test of charging system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaveform voltage test:\u003c\/strong\u003e waveform\/ripple\/voltage curve test (as described)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecording \u0026amp; replay:\u003c\/strong\u003e record and replay battery data\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSupport for battery measurement standards (according to text)\u003c\/h3\u003e\n\u003cp\u003eThe product text states that the KW420 supports \"all 12V batteries\" and covers \"9 battery measurement standards,\" with the following specified ranges:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCCA:\u003c\/strong\u003e 1000-2000 \/ (in the same row pattern, SAE: 100-2000 is also indicated further down)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBCI:\u003c\/strong\u003e 1000-2000\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCA:\u003c\/strong\u003e 1000-2000\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMCA:\u003c\/strong\u003e 1000-2000\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJIS:\u003c\/strong\u003e 26A17-24SH52\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIN:\u003c\/strong\u003e 10100-1400 (indicated as such in the text)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIEC:\u003c\/strong\u003e 10100-400 (indicated as such in the text)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEN:\u003c\/strong\u003e 1000-2000\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSAE:\u003c\/strong\u003e 100-2000\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Ranges and standard selection may be perceived differently depending on battery type and labeling. Always follow the battery's label and the tool's menu selections. The information above is reproduced according to the supplier's provided data.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eAdvantages – why choose KONNWEI KW420?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3-in-1:\u003c\/strong\u003e Honda full system diagnosis + universal OBD2 engine analysis + digital battery tester in the same unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eService functions:\u003c\/strong\u003e Oil reset, EPB reset, Battery match, DPF reset, and ETS reset (workshop-relevant functions).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear screen:\u003c\/strong\u003e 2.8\" TFT color display makes menus, live data, and status easier to read.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOBD2 \"must-have\" functions:\u003c\/strong\u003e Read\/Erase, Live Data, Freeze Frame, I\/M Readiness, O2\/Monitor\/Component tests, VIN\/CID\/CVN, DTC lookup, Review\/Print.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFault code library:\u003c\/strong\u003e Integrated code definitions help you interpret codes faster.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery health:\u003c\/strong\u003e Good\/Recharge\/Replace + internal resistance, life %, cranking\/charging, and waveform test as per specification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple languages:\u003c\/strong\u003e Suitable for workshop environments where you want to be able to choose menu language.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow power:\u003c\/strong\u003e Stated power 0.77W (according to specification).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eCompatibility – what is the KW420 compatible with?\u003c\/h2\u003e\n\u003cp\u003eThe KW420 is described as: \u003cstrong\u003efull system diagnostic scanner for HONDA series\u003c\/strong\u003e and \u003cstrong\u003eengine analyzer for universal OBD2 compliant car\u003c\/strong\u003e. In practice, this means you can use it in two ways:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHonda mode:\u003c\/strong\u003e to access more systems and special functions on the Honda series.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal OBD2 mode:\u003c\/strong\u003e for engine-related diagnosis on OBD2-compliant cars.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe battery testing part is specified for \u003cstrong\u003e12V\u003c\/strong\u003e and refers to starter batteries (lead-acid and variants like AGM\/GEL) as described. Exact vehicle coverage, available modules, and supported reset functions may vary depending on car model, year of manufacture, and equipment level.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePractical tip:\u003c\/strong\u003e If you want to use special functions (e.g., EPB reset or battery match), it is a good idea to test the tool on the specific car model before planning a major job, as support can vary between different generations and control unit versions.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eManual \/ installation guide – complete step-by-step (HTML)\u003c\/h2\u003e\n\u003cp\u003eHere's a complete, beginner-friendly yet workshop-practical guide for using the \u003cstrong\u003eKONNWEI KW420\u003c\/strong\u003e. The guide is divided into: preparations, connection, Honda full system diagnosis, universal OBD2 diagnosis, special functions, and battery test. Menu names may vary slightly between language selections, but the workflow is the same.\u003c\/p\u003e\n\u003ch3\u003ePart 1: Preparations\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafe parking:\u003c\/strong\u003e Park on level ground, engage P\/neutral gear, and apply the parking brake.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery status:\u003c\/strong\u003e If the car has a weak battery, diagnosis and resets can be affected. Ensure good voltage if you plan longer sessions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNote symptoms:\u003c\/strong\u003e Write down what the customer\/you are experiencing (check engine light, jerking, starting problems, brake warning, service indicator, etc.).\u003c\/li\u003e\n\u003c\/ol\u003e\u003cli\u003e\n\u003cstrong\u003eSelect language:\u003c\/strong\u003e Set the desired language in the device (English\/German\/French\/Italian\/Polish\/Spanish\/Russian).\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003ePart 2: Locate and connect to the OBD2 socket\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocate the OBD2 port:\u003c\/strong\u003e Often under the dashboard near the driver, sometimes behind a cover.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnect the KW420:\u003c\/strong\u003e Insert the connector firmly into the OBD2 socket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition mode:\u003c\/strong\u003e For many functions: ignition in ON position with the engine off (follow the tool's on-screen instructions).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStart session:\u003c\/strong\u003e Go to Honda mode or OBD2 mode depending on what you want to do.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003ePart 3: Honda full system diagnosis – how to perform systematic troubleshooting\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelect HONDA Full System\u003c\/strong\u003e from the menu (or equivalent “Honda Series”).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelect system\/module:\u003c\/strong\u003e For example, Engine, ABS, SRS, Transmission, SAS, ESP, EPB, or another system (as listed by the tool).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRead fault codes:\u003c\/strong\u003e Go to “Read Codes” and note all codes (including historical\/pending if the tool shows them).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReview live data:\u003c\/strong\u003e If available, open live data for the relevant system. For the engine: monitor temperatures, trim, RPM, load, etc.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreeze frame:\u003c\/strong\u003e If codes are emissions-related, review the freeze frame to see the operating conditions when the fault was triggered.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRectify the cause:\u003c\/strong\u003e Replace\/repair component or leakage\/wiring according to diagnosis results.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eErase fault codes:\u003c\/strong\u003e Once the action is performed: erase codes and check that they do not return immediately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePost-check:\u003c\/strong\u003e Test drive if necessary and read again.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eTip:\u003c\/strong\u003e Always start by documenting codes and symptoms before erasing, especially if the fault is intermittent.\u003c\/p\u003e\n\u003ch3\u003ePart 4: Universal OBD2\/EOBD engine diagnosis – engine light and emissions-related faults\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelect OBDII\/EOBD\u003c\/strong\u003e from the menu.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRead Codes:\u003c\/strong\u003e Read fault codes and write them down.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDTC Lookup:\u003c\/strong\u003e Look up the code in the tool's DTC Lookup for a detailed description.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLive Data:\u003c\/strong\u003e Open live data and monitor relevant parameters in text or graph.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreeze Frame:\u003c\/strong\u003e Review to see under what operating conditions the fault occurred.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI\/M Readiness:\u003c\/strong\u003e Check readiness\/monitor status, especially if the car is to be inspected or if you want to verify a repair.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eO2 Monitor \/ On-Board Monitor \/ Component Test:\u003c\/strong\u003e Use monitor tests if needed (vehicle support varies).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVehicle Info:\u003c\/strong\u003e Read VIN\/CID\/CVN if you need to document the car or check calibration info.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eErase Codes:\u003c\/strong\u003e Erase codes only after documenting them and performing corrective actions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReview\/Print Data:\u003c\/strong\u003e Save, review, and upload\/“print” data to a computer according to the tool's workflow.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003ePart 5: Oil Reset – step by step\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerform service:\u003c\/strong\u003e Change oil\/filter or perform the required service.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGo to special functions:\u003c\/strong\u003e Select Oil Reset \/ Oil Service Reset in Honda mode.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFollow the instructions:\u003c\/strong\u003e The tool normally guides you through confirmations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfirm reset:\u003c\/strong\u003e Once the reset is complete, the service indicator should be updated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify:\u003c\/strong\u003e Turn the ignition off\/on and check that the service light is off.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003ePart 6: EPB reset – step by step (for brake pad\/EPB work)\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreparatory work:\u003c\/strong\u003e Ensure the car is safely positioned and brake work is performed correctly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelect EPB reset:\u003c\/strong\u003e Go to EPB (Electrical Park Brake) reset in special functions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFollow instructions:\u003c\/strong\u003e The tool may ask you to set the ignition to the correct position.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset\/calibration:\u003c\/strong\u003e Perform reset according to the tool's flow after pad replacement, sensor replacement, or servo replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify:\u003c\/strong\u003e Check that warning lights\/alarms turn off and that the EPB functions correctly.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003ePart 7: Battery Match – step by step (after battery replacement)\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplace battery:\u003c\/strong\u003e Ensure the correct battery type and proper installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelect BAT Match:\u003c\/strong\u003e Open Battery Match\/BAT Match in the tool's special functions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerform matching:\u003c\/strong\u003e Follow instructions to clear old “low battery” information and match the monitoring unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify functions:\u003c\/strong\u003e Check if systems such as start\/stop and electrical functions behave normally after matching.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003ePart 8: DPF reset and ETS reset – practical workflow\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagnose first:\u003c\/strong\u003e Read codes and live data before performing a reset, so you know why the action is needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelect function:\u003c\/strong\u003e Go to DPF reset or ETS reset in the special functions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFollow the tool's instructions:\u003c\/strong\u003e Resets may require specific conditions (ignition mode, temperature, etc.).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify results:\u003c\/strong\u003e Read the system status and check if codes return.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Resets should be performed when the cause has been addressed or when the workflow requires it. \"Resetting away\" errors without correcting the underlying issue often leads to the error recurring.\u003c\/p\u003e\n\u003ch3\u003ePart 9: Battery Test – step by step (12V)\u003c\/h3\u003e\n\u003cp\u003eThe KW420 has a battery test function that can provide results such as \u003cstrong\u003eGood\u003c\/strong\u003e, \u003cstrong\u003eRecharge\u003c\/strong\u003e, or \u003cstrong\u003eReplace\u003c\/strong\u003e, as well as show internal resistance, life %, and system tests. The exact connection method may vary depending on the version\/delivery, but battery testing is normally done with stable contact and correct selection of battery standard (CCA\/EN\/DIN\/IEC etc.).\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrepare the battery:\u003c\/strong\u003e Visually inspect the battery for damage, leaks, or heavy corrosion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelect battery test from the menu:\u003c\/strong\u003e Go to battery test\/battery tester mode.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelect standard:\u003c\/strong\u003e Select the battery's rating standard (e.g., CCA, EN, DIN, or IEC) according to the battery label.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnter rating:\u003c\/strong\u003e Enter the value according to the standard if the tool prompts you.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRun test:\u003c\/strong\u003e Start the test and await results.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterpret results:\u003c\/strong\u003e Good = battery is deemed good, Recharge = charge and test again, Replace = battery is deemed to need replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem tests:\u003c\/strong\u003e If using cranking\/charging\/waveform test – follow the tool's instructions carefully.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSave and replay:\u003c\/strong\u003e Use recording\/replay if you want to compare before\/after charging or repair.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eTips and advice – how to get better diagnostic results and save time\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument before erasing:\u003c\/strong\u003e Always write down fault codes and preferably freeze frame before erasing – especially for intermittent faults.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWork with live data:\u003c\/strong\u003e Codes tell you \"what caused the alarm\", live data helps you understand \"why\" and under what conditions the fault occurs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse readiness smart:\u003c\/strong\u003e After repair, I\/M Readiness can show if the system has completed its checks and if the car is ready.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil reset after service:\u003c\/strong\u003e Do not reset oil life if you haven't performed service – this will easily cause errors in service planning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEPB reset for brake jobs:\u003c\/strong\u003e Perform a reset when the job requires it, and always check brake function and warnings afterwards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery match after battery replacement:\u003c\/strong\u003e If the car has battery monitoring, matching can prevent false low voltage indications and incorrect operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery test \"Recharge\":\u003c\/strong\u003e Fully charge the battery and test again after rest for a fairer assessment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTroubleshoot the cause, not just the symptom:\u003c\/strong\u003e Resets and code erasure are tools – not repairs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrint\/Upload for documentation:\u003c\/strong\u003e Uploading\/printing data to a computer is good for customer records and history.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eFrequently Asked Questions (FAQ)\u003c\/h2\u003e\n\u003ch3\u003e1) Is the KW420 a pure Honda scanner or does it also work on other cars?\u003c\/h3\u003e\n\u003cp\u003eIt is both a \u003cstrong\u003efull system diagnostic for Honda\u003c\/strong\u003e and a \u003cstrong\u003euniversal OBD2\/EOBD engine analyzer\u003c\/strong\u003e for OBD2-compliant cars. The full system part is aimed at the Honda series, while the OBD2 part is used for engine-related diagnostics on many vehicles.\u003c\/p\u003e\n\u003ch3\u003e2) What systems can the KW420 read on Honda according to the description?\u003c\/h3\u003e\n\u003cp\u003eIt mentions engine light\/engine, ABS, SRS, transmission, SAS, ESP, EPB, and other systems, among others.\u003c\/p\u003e\n\u003ch3\u003e3) Can I turn off the engine light with the KW420?\u003c\/h3\u003e\n\u003cp\u003eYes, by reading and then erasing engine-related OBD2 fault codes, you can often turn off the MIL (provided the cause has been addressed).\u003c\/p\u003e\n\u003ch3\u003e4) Does it have live data?\u003c\/h3\u003e\n\u003cp\u003eYes, it can read live data\/PCM datastream and display it in text or graphics (according to the description).\u003c\/p\u003e\n\u003ch3\u003e5) What is freeze frame and why is it important?\u003c\/h3\u003e\n\u003cp\u003eFreeze frame is a snapshot of operating conditions when an emissions fault occurs. It can help you understand the conditions under which the fault is triggered.\u003c\/p\u003e\n\u003ch3\u003e6) What does I\/M Readiness mean?\u003c\/h3\u003e\n\u003cp\u003eIt shows whether emissions-related monitors have been run and are ready. It is often used for pre-I\/M test checks and after repair to confirm correct action.\u003c\/p\u003e\n\u003ch3\u003e7) Does the KW420 support O2 Monitor Test?\u003c\/h3\u003e\n\u003cp\u003eYes, according to the feature list. The result is the ECU's latest O2 test (not live values), and support may vary between vehicles.\u003c\/p\u003e\n\u003ch3\u003e8) What does On-Board Monitor Test do?\u003c\/h3\u003e\n\u003cp\u003eIt reads the results of built-in diagnostic monitors for specific components\/systems, where the vehicle supports it.\u003c\/p\u003e\n\u003ch3\u003e9) What is Component Test?\u003c\/h3\u003e\n\u003cp\u003eThe tool can initiate a leak test by signaling the car to start the test (the tool does not perform the leak test itself). Follow the car's service procedure.\u003c\/p\u003e\n\u003ch3\u003e10) Can the KW420 read VIN?\u003c\/h3\u003e\n\u003cp\u003eYes, in Vehicle Info, it can display VIN as well as CID and CVN according to the description.\u003c\/p\u003e\n\u003ch3\u003e11) Are fault code descriptions available in the tool?\u003c\/h3\u003e\n\u003cp\u003eYes, the product text mentions an integrated fault code definition library and DTC Lookup.\u003c\/p\u003e\n\u003ch3\u003e12) Can I save and review data afterwards?\u003c\/h3\u003e\n\u003cp\u003eYes, the feature list includes Review Data and the ability to \"replay failures that store records\".\u003c\/p\u003e\n\u003ch3\u003e13) What does Print Data mean?\u003c\/h3\u003e\n\u003cp\u003eAccording to the text, the tool can upload stored fault codes to a computer. It can be used for documentation and archiving.\u003c\/p\u003e\n\u003ch3\u003e14) What special functions are available for Honda?\u003c\/h3\u003e\n\u003cp\u003eOil reset, battery match, EPB reset, DPF reset, and ETS reset.\u003c\/p\u003e\n\u003ch3\u003e15) When should I use Oil Reset?\u003c\/h3\u003e\n\u003cp\u003eAfter oil service has been performed or when oil life systems\/monitoring components have been replaced and the service indicator needs to be reset.\u003c\/p\u003e\n\u003ch3\u003e16) When is EPB reset needed?\u003c\/h3\u003e\n\u003cp\u003eAccording to the description, when replacing brake pads\/wear sensors, when the indicator light is on, when a sensor short circuit is reset, or when replacing the servo motor.\u003c\/p\u003e\n\u003ch3\u003e17) Why is Battery Match needed?\u003c\/h3\u003e\n\u003cp\u003eTo clear old low-battery information and match the battery monitoring system after battery replacement or for battery monitoring sensor-related matching.\u003c\/p\u003e\n\u003ch3\u003e18) Is the KW420 a battery tester?\u003c\/h3\u003e\n\u003cp\u003eYes, it is also a digital battery tester for 12V starter batteries and can show Good\/Recharge\/Replace as well as internal resistance, life %, cranking\/charging, and waveform test according to specification.\u003c\/p\u003e\n\u003ch3\u003e19) What battery types are mentioned?\u003c\/h3\u003e\n\u003cp\u003eOrdinary lead-acid, AGM flat, AGM spiral, and gel batteries are mentioned in the battery test section.\u003c\/p\u003e\n\u003ch3\u003e20) What languages does the device support?\u003c\/h3\u003e\n\u003cp\u003eEnglish, German, French, Italian, Polish, Spanish, and Russian.\u003c\/p\u003e\n\u003ch3\u003e21) What screen does the KW420 have?\u003c\/h3\u003e\n\u003cp\u003eA 2.8\" TFT color screen (2.8inch TFT Color Display).\u003c\/p\u003e\n\u003ch3\u003e22) Is the KW420 only 12V?\u003c\/h3\u003e\n\u003cp\u003eThe specification states 12V. The battery test section is specified for 12V system voltage.\u003c\/p\u003e\n\u003ch3\u003e23) Can I use the KW420 on a car without OBD2?\u003c\/h3\u003e\n\u003cp\u003eThe OBD2 part requires an OBD2-compliant vehicle. The full system mode is aimed at the Honda series, but even there, compatible communication via the diagnostic port is required.\u003c\/p\u003e\n\u003ch3\u003e24) Can the tool \"fix\" the car just by erasing codes?\u003c\/h3\u003e\n\u003cp\u003eNo. Code erasure extinguishes symptoms (the light) but does not address the cause. If the fault persists, codes will often return.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003ePackage Contents – what's included\u003c\/h2\u003e\n\u003cp\u003eExact package contents may vary depending on delivery and package. This product is a handheld diagnostic and testing tool, and what is normally required for use is the unit itself and connection to the car's OBD2 socket. The \"Print Data\" function (upload to computer) may require appropriate connection according to the version\/software used.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKONNWEI KW420 diagnostic tool (handheld unit)\u003c\/li\u003e\n\u003cli\u003eOBD2 connection (via the vehicle's OBD2 socket)\u003c\/li\u003e\n\u003cli\u003ePossible connection for data upload (depending on version and workflow for “Print Data”)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eDisclaimer \u0026amp; Important Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility varies:\u003c\/strong\u003e System coverage and special functions may vary between Honda models\/model years and equipment levels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOBD2 scope:\u003c\/strong\u003e Universal OBD2 diagnosis is primarily engine\/emissions related. Other modules may require brand\/system-specific support.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eErase codes only after action:\u003c\/strong\u003e Code erasure is not repair. Always document codes before erasing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEPB and brakes:\u003c\/strong\u003e Brakes are safety-critical. Always follow correct mechanical work and check function after reset.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDPF\/ETS resets:\u003c\/strong\u003e Resets should be performed when the workflow requires it and\/or after action. Incorrect reset can lead to the problem recurring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery test:\u003c\/strong\u003e Results (Good\/Recharge\/Replace) are decision support. If unsure: supplement with additional measurement\/diagnosis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical systems:\u003c\/strong\u003e A weak battery or voltage drop can affect diagnosis. Ensure stable voltage during longer sessions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eSummary – KW420 as an \"all-in-one\" for Honda, engine light and battery health\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eKONNWEI KW420\u003c\/strong\u003e is a practical tool for those who want both \u003cstrong\u003eHonda full system diagnosis\u003c\/strong\u003e and \u003cstrong\u003euniversal OBD2 engine analysis\u003c\/strong\u003e in the same unit, while also getting a \u003cstrong\u003edigital battery tester\u003c\/strong\u003e for 12V starter batteries. With functions such as Read\/Erase, Live Data, Freeze Frame, I\/M Readiness, monitor tests, Vehicle Info (VIN\/CID\/CVN), DTC Lookup, Review\/Print Data – plus Honda-focused special functions like Oil Reset, EPB reset, Battery Match, DPF reset, and ETS reset – the KW420 is built to save time and create a more structured workflow in troubleshooting and service. ✅\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- Relevant internal links (felkodslasare.se) – robust Shopify search links, no external links --\u003e\n\u003csection\u003e\n\u003ch2\u003eRelated on Felkodslasare.se\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-en\/search?q=KW420\"\u003eMore results for KW420\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-en\/search?q=KONNWEI\"\u003eMore products from KONNWEI\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-en\/search?q=Honda%20OBD2\"\u003eOBD2\/diagnosis for Honda\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-en\/search?q=OBD2%20felkodsl%C3%A4sare\"\u003eOBD2 fault code readers\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-en\/search?q=EPB%20reset\"\u003eEPB reset tools\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-en\/search?q=Oil%20reset\"\u003eOil service \/ Oil reset\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-en\/search?q=batteritestare%2012V\"\u003eBattery tester 12V\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"Konnwei","offers":[{"title":"Default Title","offer_id":54615755489548,"sku":"FEL-KW420","price":81.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0746\/4979\/6876\/files\/Hceee3f9379074d2ea0947e004d5783d4q.jpg?v=1766930660","url":"https:\/\/www.felkodslasare.se\/en-en\/products\/konnwei-kw420-fullsystem-diagnosverktyg-for-honda","provider":"Felkodsläsare","version":"1.0","type":"link"}