{"product_id":"konnwei-kw870-bil-batteritestare-obdii-diagnosverktyg","title":"KONNWEI KW870 – OBD2\/EOBD\/CAN diagnostic scanner + battery tester for universal 12V cars (6V\/12V batteries)","description":"\u003c!-- READY HTML FOR SHOPIFY – KONNWEI KW870 OBD2\/EOBD Diagnostic Scanner + Battery Tester \/ felkodslasare.se --\u003e\n\u003csection itemtype=\"https:\/\/schema.org\/Product\" itemscope=\"\" id=\"konnwei-kw870\"\u003e\u003cmeta itemprop=\"name\" content=\"KONNWEI KW870 – OBD2\/EOBD Diagnostic Scanner with Battery Test (6V\/12V)\"\u003e \u003cmeta itemprop=\"brand\" content=\"KONNWEI\"\u003e \u003cmeta itemprop=\"sku\" content=\"KW870\"\u003e \u003cmeta itemprop=\"mpn\" content=\"KW870\"\u003e \u003cmeta itemprop=\"category\" content=\"Code Readers, OBD2, EOBD, CAN, Battery Testers, Handheld Scanner\"\u003e \u003clink itemprop=\"url\" href=\"https:\/\/www.felkodslasare.se\/\"\u003e\n\u003ch2\u003eKONNWEI KW870 – OBD2\/EOBD\/CAN Diagnostic Scanner + Battery Tester for Universal 12V Cars (6V\/12V Batteries)\u003c\/h2\u003e\n\u003c!-- SHORT VERSION (200–300 words) --\u003e\n\u003cdiv itemprop=\"description\" id=\"kortversion\"\u003e\n\u003ch2\u003eShort Version – Quick Overview\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eKONNWEI KW870\u003c\/strong\u003e is a powerful and affordable \u003cstrong\u003eOBD2\/EOBD\/CAN code reader\u003c\/strong\u003e that covers \u003cstrong\u003eall 10 OBD modes\u003c\/strong\u003e for complete \u003cstrong\u003eengine and emission diagnostics\u003c\/strong\u003e on OBD II compliant vehicles (USA 1996+, EU petrol ≈2001+, EU diesel ≈2004+). With the patented \u003cstrong\u003eOne-Click I\/M button\u003c\/strong\u003e, you can immediately see if the car is ready for inspection. The \u003cstrong\u003e2.8” backlit TFT screen\u003c\/strong\u003e and \u003cstrong\u003ebuilt-in speaker\u003c\/strong\u003e make operation clear and fast. You can read\/clear \u003cstrong\u003eDTCs\u003c\/strong\u003e, view \u003cstrong\u003elive data\u003c\/strong\u003e numerically and in \u003cstrong\u003egraphs\u003c\/strong\u003e, review \u003cstrong\u003efreeze frame\u003c\/strong\u003e, perform \u003cstrong\u003eO2 tests\u003c\/strong\u003e, \u003cstrong\u003eMode $06\u003c\/strong\u003e (on-board monitoring), retrieve \u003cstrong\u003eVIN\/CALID\/CVN\u003c\/strong\u003e, and print reports via PC.\u003c\/p\u003e\n\u003cp\u003eIn addition to engine diagnostics, the KW870 also functions as a \u003cstrong\u003ebattery tester\u003c\/strong\u003e for \u003cstrong\u003e6V\/12V lead-acid batteries\u003c\/strong\u003e (motorcycles, cars, light trucks, lawnmowers, etc.) – with \u003cstrong\u003ehealth test\u003c\/strong\u003e, \u003cstrong\u003ecranking test\u003c\/strong\u003e, and \u003cstrong\u003echarging test\u003c\/strong\u003e. \u003cstrong\u003eTroubleshooting tips\u003c\/strong\u003e (\"?\") and a built-in \u003cstrong\u003eDTC dictionary\u003c\/strong\u003e help you take the right action faster. The device supports \u003cstrong\u003efree updates\u003c\/strong\u003e and \u003cstrong\u003ePC printing\u003c\/strong\u003e (Windows XP–10). Do you need more handheld scanners or wireless adapters? Check out our collection of \u003ca href=\"https:\/\/www.felkodslasare.se\/collections\/felkodslasare-1\"\u003ecode readers\u003c\/a\u003e. 🔧\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- TABLE OF CONTENTS --\u003e\u003cnav id=\"innehall\"\u003e\n\u003ch2\u003eContents\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003e\u003ca href=\"#introduktion\"\u003eIntroduction – What is the KW870?\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#specifikationer\"\u003eSpecifications (Bullet List)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#funktioner\"\u003eFeatures \u0026amp; Applications\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#protokoll\"\u003eSupported Protocols \u0026amp; Vehicle Requirements\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#batteri\"\u003eBattery Test 6V\/12V – Health, Cranking \u0026amp; Charging\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#manual\"\u003eManual \u0026amp; Installation Guide (Step-by-Step)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#arbetsfloden\"\u003ePractical Workflows \u0026amp; Examples\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#tips\"\u003eTips, Best Practices \u0026amp; Data Interpretation\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#faq\"\u003eFrequently Asked Questions (FAQ)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#forpackning\"\u003ePackage Contents\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#notiser\"\u003eImportant Notes \u0026amp; Responsibilities\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#sammanfattning\"\u003eSummary\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/nav\u003e\u003c!-- INTRODUCTION --\u003e\n\u003csection id=\"introduktion\"\u003e\n\u003ch2\u003eIntroduction – What is the KW870?\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eKONNWEI KW870\u003c\/strong\u003e is a \u003cstrong\u003ehandheld OBD2\/EOBD\/CAN scanner\u003c\/strong\u003e that combines advanced engine\/emission diagnostic functions with an \u003cstrong\u003eintegrated battery tester\u003c\/strong\u003e for 6V and 12V lead-acid batteries. Its purpose is to provide car owners, enthusiast mechanics, and small workshops with a robust tool that:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuickly explains MIL\u003c\/strong\u003e (Check Engine) by reading \u003cstrong\u003ecurrent\/stored\/pending DTCs\u003c\/strong\u003e with clear definitions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisualizes live data\u003c\/strong\u003e (up to 50 PIDs\/s) both numerically and in \u003cstrong\u003egraphs\u003c\/strong\u003e for easy trend analysis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimplifies inspection checks\u003c\/strong\u003e via \u003cstrong\u003eOne-Click I\/M\u003c\/strong\u003e – monitor status in a second.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocuments\u003c\/strong\u003e your work: save sessions and \u003cstrong\u003eprint\u003c\/strong\u003e reports via PC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAssesses battery status\u003c\/strong\u003e (indicative SOH\/SOC), \u003cstrong\u003ecranking\u003c\/strong\u003e, and \u003cstrong\u003echarging\u003c\/strong\u003e without a separate instrument.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis makes the KW870 an \u003cstrong\u003eall-in-one tool\u003c\/strong\u003e that covers the most common diagnostic and battery needs in everyday use. It is built into a shock-resistant \u003cstrong\u003eABS casing\u003c\/strong\u003e with a \u003cstrong\u003e2.8” TFT color screen\u003c\/strong\u003e, clear buttons, and a \u003cstrong\u003ebuilt-in speaker\u003c\/strong\u003e that provides acoustic feedback during menu selections, tests, and alarms.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- SPECIFICATIONS --\u003e\n\u003csection id=\"specifikationer\"\u003e\n\u003ch2\u003eSpecifications (Bullet List)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e KONNWEI KW870\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Handheld OBD2\/EOBD\/CAN Diagnostic Scanner + Battery Tester\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScreen \u0026amp; Sound:\u003c\/strong\u003e 2.8” TFT HD (320×240), backlit, built-in speaker\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCasing:\u003c\/strong\u003e Red ABS shell with ergonomic grip\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMenu Languages:\u003c\/strong\u003e English, French, German, Dutch, Spanish, Russian, Portuguese, Italian, Polish\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePC Support:\u003c\/strong\u003e Windows XP\/7\/8\/10, \u003cstrong\u003efree upgrades\u003c\/strong\u003e, \u003cstrong\u003ePC printing\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOBD Functions:\u003c\/strong\u003e All 10 OBD modes (DTC, live data, freeze frame, I\/M, O2, Mode $06, VIN\/CALID\/CVN etc.)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtocols:\u003c\/strong\u003e ISO 9141, ISO 14230-4 (KWP2000), SAE J1850 PWM\/VPW, ISO 15765-4 (CAN)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery Test:\u003c\/strong\u003e 6V \u0026amp; 12V lead-acid (motorcycles, cars, light trucks, garden machinery); health, cranking, charging\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty Period:\u003c\/strong\u003e 12 months\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVehicle Compatibility:\u003c\/strong\u003e \u003cem\u003eAll OBD II compliant vehicles\u003c\/em\u003e (see limitations in notes)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable:\u003c\/strong\u003e 1.5m OBD2 16-pin DLC cable; separate battery cable for testing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction Tips:\u003c\/strong\u003e Built-in DTC dictionary + troubleshooting tips via \"?\" button\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c!-- FUNCTIONS --\u003e\n\u003csection id=\"funktioner\"\u003e\n\u003ch2\u003eFeatures \u0026amp; Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll 10 OBD Modes:\u003c\/strong\u003e Full engine\/emission diagnostics – from read\/clear DTC to advanced monitors (Mode $06).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDTC \u0026amp; MIL:\u003c\/strong\u003e Read generic (P0\/P2\/P3\/U0) and manufacturer-specific (P1\/P3\/U1) codes; turn off MIL after repair.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDTC Definitions:\u003c\/strong\u003e Explanations directly on screen – faster troubleshooting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-Click I\/M:\u003c\/strong\u003e See monitor status (\u003cem\u003eReady\/Not Ready\u003c\/em\u003e) before inspection with one button press.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLive Data:\u003c\/strong\u003e View\/plot up to 50 PIDs\/s (RPM, ECT, IAT, MAP\/MAF, trims, lambda etc.).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreeze Frame:\u003c\/strong\u003e Captures conditions when the fault occurred – invaluable for intermittent faults.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMode $06 \u0026amp; O2 Test:\u003c\/strong\u003e Analyze ECU's own monitoring tests and oxygen sensor performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVIN\/CALID\/CVN:\u003c\/strong\u003e Identify vehicle\/calibrations for documentation (Mode $09).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery Test 6\/12V:\u003c\/strong\u003e Health (indicative), cranking, and charging in the same instrument.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLog \u0026amp; Print:\u003c\/strong\u003e Save diagnostic sessions, export\/print via PC and create professional reports.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTroubleshooting Tips:\u003c\/strong\u003e The \"?\" button provides advice on probable causes and next steps.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c!-- PROTOCOLS --\u003e\n\u003csection id=\"protokoll\"\u003e\n\u003ch2\u003eSupported Protocols \u0026amp; Vehicle Requirements\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtocols:\u003c\/strong\u003e ISO 15765-4 CAN, ISO 9141-2, ISO 14230-4 KWP2000, SAE J1850 VPW\/PWM.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRegional Guidelines:\u003c\/strong\u003e USA 1996+, EU petrol ≈2001+, EU diesel ≈2004+ (exceptions occur).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRequirements:\u003c\/strong\u003e 16-pin OBD-DLC and 12V electrical system for engine diagnostics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote:\u003c\/em\u003e The KW870 focuses on \u003cstrong\u003eengine\/emission\u003c\/strong\u003e. Access to other systems (ABS\/SRS\/BCM\/TPMS\/BMS etc.) often requires brand-specific diagnostics. Not intended for 24V\/J1939 (heavy vehicles).\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- BATTERY --\u003e\n\u003csection id=\"batteri\"\u003e\n\u003ch2\u003eBattery Test 6V\/12V – Health, Cranking \u0026amp; Charging\u003c\/h2\u003e\n\u003cp\u003eThe KW870 has an integrated \u003cstrong\u003ebattery tester\u003c\/strong\u003e for \u003cstrong\u003e6V and 12V lead-acid batteries\u003c\/strong\u003e (common starter\/service batteries in motorcycles, cars, light trucks, lawnmowers, etc.). The test results help you determine if the battery should be \u003cem\u003eused, charged, or replaced\u003c\/em\u003e, and if the \u003cstrong\u003estarter motor\u003c\/strong\u003e and \u003cstrong\u003ealternator\u003c\/strong\u003e are behaving correctly.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHealth Test:\u003c\/strong\u003e Indicative SOH\/SOC, voltage, internal resistance (Ri), and CCA comparison (according to selected standard).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCranking Test:\u003c\/strong\u003e Measures voltage dip \u0026amp; cranking time – reveals weak cell, poor contact, or heavy starter motor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCharging Test:\u003c\/strong\u003e Assesses alternator\/regulator (idle\/RPM, load off\/on, ripple indication).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuick Verification:\u003c\/strong\u003e Combine battery test and OBD live data for a complete picture of starting \u0026amp; charging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eTip:\u003c\/em\u003e For lead-acid, the resting voltage should be measured after 2–3 hours at rest. Then compare with the cranking dip and the alternator's charging voltage.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- MANUAL --\u003e\n\u003csection id=\"manual\"\u003e\n\u003ch2\u003eManual \u0026amp; Installation Guide (Step-by-Step)\u003c\/h2\u003e\n\u003ch3\u003eA. Preparation \u0026amp; Safety\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003ePark safely, engage park\/handbrake and turn off the engine.\u003c\/li\u003e\n\u003cli\u003eHave the vehicle's \u003cstrong\u003eOBD2 port\u003c\/strong\u003e accessible (usually under the dashboard on the driver's side).\u003c\/li\u003e\n\u003cli\u003eFor battery testing: use safety glasses\/gloves and ensure terminals are clean.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eB. Basic Diagnostics (OBD2)\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eTurn ignition \u003cstrong\u003eOFF\u003c\/strong\u003e. Connect the 16-pin OBD cable to the vehicle's DLC and to the KW870.\u003c\/li\u003e\n\u003cli\u003eTurn ignition \u003cstrong\u003eON\u003c\/strong\u003e (engine OFF). The KW870 will start and automatically detect the protocol.\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003elanguage\u003c\/strong\u003e and open the \u003cstrong\u003eOBD menu\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003ePress \u003cstrong\u003eRead Codes\u003c\/strong\u003e – note \u003cstrong\u003ecurrent\/stored\/pending\u003c\/strong\u003e DTCs and \u003cstrong\u003eDTC definitions\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eOpen \u003cstrong\u003eFreeze Frame\u003c\/strong\u003e – document RPM, ECT, load, trims, MAP\/MAF etc.\u003c\/li\u003e\n\u003cli\u003ePress \u003cstrong\u003eOne-Click I\/M\u003c\/strong\u003e – see monitor status (\u003cem\u003eReady\/Not Ready\u003c\/em\u003e) before inspection.\u003c\/li\u003e\n\u003cli\u003eGo to \u003cstrong\u003eLive Data\u003c\/strong\u003e – select 6–10 key PIDs (ECT, STFT\/LTFT, O2 values, MAF\/MAP, RPM, spark advance).\u003c\/li\u003e\n\u003cli\u003eStart the engine if needed and \u003cstrong\u003eobserve graphs\u003c\/strong\u003e (easier to see trends\/deviations).\u003c\/li\u003e\n\u003cli\u003eRectify cause → \u003cstrong\u003eErase Codes\u003c\/strong\u003e to turn off MIL and reset monitors.\u003c\/li\u003e\n\u003cli\u003ePerform \u003cstrong\u003edrive cycle\u003c\/strong\u003e according to vehicle specifications to get monitors to \u003cem\u003eReady\u003c\/em\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eC. Battery Test (6\/12V)\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eTurn off the engine and all loads. Connect \u003cstrong\u003ered clamp\u003c\/strong\u003e to \u003cstrong\u003e+\u003c\/strong\u003e, \u003cstrong\u003eblack\u003c\/strong\u003e to \u003cstrong\u003e−\u003c\/strong\u003e on the battery.\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003eBattery Test\u003c\/strong\u003e. Enter battery type (WET\/AGM\/GEL\/EFB) and standard (e.g., CCA\/EN) + rated CCA.\u003c\/li\u003e\n\u003cli\u003eRun the test and note results: \u003cem\u003eGood \/ Recharge \/ Replace\u003c\/em\u003e, SOH\/SOC (indicative), Ri, CCA.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCranking:\u003c\/strong\u003e Start the engine when the unit prompts – note voltage dip \u0026amp; cranking time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCharging:\u003c\/strong\u003e Let the engine run at idle\/RPM and turn on loads – check charging voltage\/ripple.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eD. Report \u0026amp; Print\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eSave the diagnostic session (DTC\/freeze\/live data) and battery test.\u003c\/li\u003e\n\u003cli\u003eConnect to PC (Windows) → \u003cstrong\u003eexport\/print\u003c\/strong\u003e as customer documentation or internal records.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/section\u003e\n\u003c!-- WORKFLOWS --\u003e\n\u003csection id=\"arbetsfloden\"\u003e\n\u003ch2\u003ePractical Workflows \u0026amp; Examples\u003c\/h2\u003e\n\u003ch3\u003e1) Misfire (P030x)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRead codes:\u003c\/strong\u003e Identify cylinder. See \u003cstrong\u003eFreeze Frame\u003c\/strong\u003e (temperature, load, RPM).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLive Data:\u003c\/strong\u003e Follow STFT\/LTFT, O2-switching, MAF\/MAP and ignition timing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAction:\u003c\/strong\u003e Move ignition coil and\/or spark plug between cylinders – does the fault seem to follow the component?\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify:\u003c\/strong\u003e Clear codes, test drive and check I\/M.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e2) EVAP-related (P044x)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck:\u003c\/strong\u003e Do not overfill the tank. Inspect fuel cap gasket and hoses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMode $06:\u003c\/strong\u003e Read monitoring results (vehicle-dependent) for small\/large leaks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify:\u003c\/strong\u003e After repair – clear, perform correct drive cycle (EVAP often requires specific conditions).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e3) O2\/Lambda (P013x\/P015x)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLive Data:\u003c\/strong\u003e B1S1\/B2S1 should switch quickly; B1S2\/B2S2 more stable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrim:\u003c\/strong\u003e Deviant STFT\/LTFT indicates vacuum leak\/MAF problem.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify:\u003c\/strong\u003e Clear codes and follow graphs after repair.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e4) Charging Problem (no codes but starting difficulties)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery Test:\u003c\/strong\u003e Resting voltage + SOH\/SOC\/Ri – weak battery or parasitic drain?\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCranking:\u003c\/strong\u003e If the dip is \u0026gt; 9.6–10.0V (12V system), the battery may be worn or the starter motor heavy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCharging:\u003c\/strong\u003e Charging voltage 13.8–14.7V typically (12V). High ripple → suspect rectifier\/regulator.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c!-- TIPS --\u003e\n\u003csection id=\"tips\"\u003e\n\u003ch2\u003eTips, Best Practices \u0026amp; Data Interpretation\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSave first, clear later:\u003c\/strong\u003e Document DTC \u0026amp; freeze frame before clearing – especially important for intermittent faults.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLimit PIDs:\u003c\/strong\u003e Select 6–10 key values in live data for faster updates and clearer graphs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStable voltage:\u003c\/strong\u003e Low battery voltage can cause communication errors – trickle charge if needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompare relationships:\u003c\/strong\u003e MAF vs MAP, O2 vs trims – the whole picture reveals the source of the error.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAfter repair:\u003c\/strong\u003e Perform drive cycle so monitors become \u003cem\u003eReady\u003c\/em\u003e for inspection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupplement if needed:\u003c\/strong\u003e If you need more service functions – see our \u003ca href=\"https:\/\/www.felkodslasare.se\/collections\/felkodslasare-1\"\u003ecode readers\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery Test:\u003c\/strong\u003e Perform resting voltage after rest, then cranking and charging – compare with references and previous logs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c!-- FAQ --\u003e\n\u003csection id=\"faq\"\u003e\n\u003ch2\u003eFrequently Asked Questions (FAQ)\u003c\/h2\u003e\n\u003ch3\u003e1. Does the KW870 read ABS\/airbag\/BCM?\u003c\/h3\u003e\n\u003cp\u003eOBD2\/EOBD primarily concerns \u003cstrong\u003eengine \u0026amp; emission\u003c\/strong\u003e. For ABS\/SRS\/BCM, brand-specific diagnostics are often required.\u003c\/p\u003e\n\u003ch3\u003e2. Does it work on diesel and hybrid?\u003c\/h3\u003e\n\u003cp\u003eYes, for OBD2 parameters in engine\/emission. Deeper system-specific data may require brand-specific tools.\u003c\/p\u003e\n\u003ch3\u003e3. Does the KW870 support EVAP commands?\u003c\/h3\u003e\n\u003cp\u003eParts of EVAP data\/monitors can be read on some vehicles. Availability varies with make\/model year\/market.\u003c\/p\u003e\n\u003ch3\u003e4. Can I print reports?\u003c\/h3\u003e\n\u003cp\u003eYes. Save the session and print via PC (Windows). Good for customer documentation and records.\u003c\/p\u003e\n\u003ch3\u003e5. What does the battery function include?\u003c\/h3\u003e\n\u003cp\u003eHealth test (indicative), \u003cstrong\u003ecranking\u003c\/strong\u003e (start) and \u003cstrong\u003echarging\u003c\/strong\u003e (alternator). For 6V\/12V lead-acid.\u003c\/p\u003e\n\u003ch3\u003e6. Does the KW870 work on 24V vehicles?\u003c\/h3\u003e\n\u003cp\u003eNo, the OBD part is designed for 12V OBD2\/EOBD cars. Battery test is 6V\/12V.\u003c\/p\u003e\n\u003ch3\u003e7. Are updates free?\u003c\/h3\u003e\n\u003cp\u003eYes, \u003cstrong\u003efree upgrades\u003c\/strong\u003e and \u003cstrong\u003ePC printing\u003c\/strong\u003e are supported.\u003c\/p\u003e\n\u003ch3\u003e8. Why does the MIL reappear after clearing?\u003c\/h3\u003e\n\u003cp\u003eClearing turns off the light but doesn't fix the root cause. Repair the underlying fault – then perform a drive cycle.\u003c\/p\u003e\n\u003ch3\u003e9. Compatibility with older vehicles?\u003c\/h3\u003e\n\u003cp\u003eSee regional guidelines. Some older EU vehicles may lack full OBD2 support despite a 16-pin port.\u003c\/p\u003e\n\u003ch3\u003e10. Where can I find more readers\/adapters?\u003c\/h3\u003e\n\u003cp\u003eSee our collection of \u003ca href=\"https:\/\/www.felkodslasare.se\/collections\/felkodslasare-1\"\u003ecode readers\u003c\/a\u003e for alternatives and complements.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- PACKAGING --\u003e\n\u003csection id=\"forpackning\"\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 × KONNWEI KW870 Handheld OBD2 Scanner\u003c\/li\u003e\n\u003cli\u003e1 × 1.5m 16-pin OBD2 Cable\u003c\/li\u003e\n\u003cli\u003e1 × Battery Test Cable (red\/black)\u003c\/li\u003e\n\u003cli\u003e1 × 82cm USB Cable (PC connection\/printing)\u003c\/li\u003e\n\u003cli\u003e1 × Nylon Carrying Bag\u003c\/li\u003e\n\u003cli\u003e1 × User Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c!-- NOTICES --\u003e\n\u003csection id=\"notiser\"\u003e\n\u003ch2\u003eImportant Notes \u0026amp; Responsibilities\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e \"All OBD II vehicles\" follow general guidelines; exceptions occur (e.g., some Russian models before 2012). Not for heavy vehicles\/24V\/J1939.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Scope:\u003c\/strong\u003e The KW870 focuses on \u003cstrong\u003eengine\/emission\u003c\/strong\u003e. Other systems typically require brand-specific diagnostics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eData Security:\u003c\/strong\u003e Use correct interpretation of OBD data; always follow vehicle manufacturer's service instructions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery Test:\u003c\/strong\u003e Results are indicative and should be interpreted in conjunction with load tests, history, and visual inspection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety:\u003c\/strong\u003e Diagnostics\/charging should not be performed while driving. Work in a ventilated area, avoid sparks near open lead-acid batteries.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUpdates:\u003c\/strong\u003e Feature availability may vary per vehicle\/model year\/market.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNeed more models and accessories? Visit our \u003ca href=\"https:\/\/www.felkodslasare.se\/collections\/felkodslasare-1\"\u003ecode readers\u003c\/a\u003e category.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- SUMMARY --\u003e\n\u003csection id=\"sammanfattning\"\u003e\n\u003ch2\u003eSummary\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eKONNWEI KW870\u003c\/strong\u003e combines \u003cstrong\u003efull OBD2 diagnostics\u003c\/strong\u003e (all 10 modes) with \u003cstrong\u003e6\/12V battery testing\u003c\/strong\u003e in a robust, easy-to-use package. With \u003cstrong\u003eOne-Click I\/M\u003c\/strong\u003e, clear \u003cstrong\u003egraphs\u003c\/strong\u003e in live data, a \u003cstrong\u003eDTC dictionary\u003c\/strong\u003e, and \u003cstrong\u003ePC printing\u003c\/strong\u003e, you work faster and smarter – from MIL cause and sensor data to battery health, cranking, and charging. For both DIY users and professionals, the KW870 is an \u003cstrong\u003eaccurate choice\u003c\/strong\u003e when you want to troubleshoot the entire powertrain's \"electrical \u0026amp; emission\" with one and the same tool. 🔧\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- SEO (HIDDEN) --\u003e\n\u003cdiv style=\"display: none;\"\u003eKONNWEI KW870, OBD2, EOBD, CAN, code reader, battery tester, One-Click I\/M, DTC, freeze frame, live data, graphs, O2 sensor, Mode 06, VIN CALID CVN, 6V, 12V, lead-acid, cranking test, charging test, PC printing, free updates, felkodslasare.se, diagnostic tool, engine\/emission, check engine, inspection, drive cycle, MIL, STFT, LTFT, MAF, MAP, lambda.\u003c\/div\u003e\n\u003c\/section\u003e","brand":"Konnwei","offers":[{"title":"Default Title","offer_id":54177164099852,"sku":"FEL-KW870","price":68.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0746\/4979\/6876\/files\/H0e8bdd17076a483589038861e7c09792s.jpg?v=1771872735","url":"https:\/\/www.felkodslasare.se\/en-en\/products\/konnwei-kw870-bil-batteritestare-obdii-diagnosverktyg","provider":"Felkodsläsare","version":"1.0","type":"link"}