{"product_id":"godiag-gt105-ii-obd-break-out-box-for-ecu-diagnos","title":"GODIAG GT105 II – OBD Break Out Box for ECU Diagnosis","description":"\u003ch2\u003eGODIAG GT105 II – OBD Break Out Box for ECU Diagnostics\/Programming with Vehicle Voltmeter, Pin Indicators, and 12V Power Supply\u003c\/h2\u003e\n\u003c!-- KORTVERSION 200–300 ORD (SEPARAT SAMMANFATTNING ÖVERST) --\u003e\n\u003csection\u003e\n\u003cp\u003eThe \u003cstrong\u003eNewest GODIAG GT105 II\u003c\/strong\u003e is an upgraded \u003cstrong\u003eOBD2 Break Out Box\u003c\/strong\u003e that makes it easier and safer to work with \u003cstrong\u003eECU diagnostics\u003c\/strong\u003e, \u003cstrong\u003eprogramming\u003c\/strong\u003e, and advanced troubleshooting via the vehicle's OBD2 port – both in the workshop and in the field. The GT105 II displays the \u003cstrong\u003evehicle's voltage\u003c\/strong\u003e directly on the device and can also warn of low battery voltage (\u003cstrong\u003ealarm below 11V\u003c\/strong\u003e), which is especially valuable during programming and sensitive sessions where stable voltage is crucial.\u003c\/p\u003e\n\u003cp\u003eIt features clear \u003cstrong\u003ecommunication indicators\u003c\/strong\u003e for common signals\/protocols: \u003cstrong\u003ePWM+ (PIN2)\u003c\/strong\u003e, \u003cstrong\u003eCANH (PIN6)\u003c\/strong\u003e, \u003cstrong\u003eCANL (PIN14)\u003c\/strong\u003e, and \u003cstrong\u003eK-line (PIN7)\u003c\/strong\u003e. When data is communicated, the respective indicator flashes, allowing you to quickly assess whether your diagnostic\/programming equipment is actually \"talking\" to the car. The GT105 II also offers \u003cstrong\u003eseparated ground points\u003c\/strong\u003e via OBD2 \u003cstrong\u003ePIN4 (Body GND)\u003c\/strong\u003e and \u003cstrong\u003ePIN5 (Signal GND)\u003c\/strong\u003e, as well as a function where \u003cstrong\u003ePIN4 and PIN5 can be switched between shorted and non-shorted\u003c\/strong\u003e – practical for special cases and certain programming scenarios.\u003c\/p\u003e\n\u003cp\u003eA major strength is that the GT105 II can \u003cstrong\u003edraw power from the car's battery\u003c\/strong\u003e and convert it to a stable \u003cstrong\u003eDC12V\u003c\/strong\u003e supply via a DC connector (\u003cstrong\u003e5.5×2.5\u003c\/strong\u003e \/ \u003cstrong\u003e5.5×2.1\u003c\/strong\u003e) with a \u003cstrong\u003eresettable 7A fuse\u003c\/strong\u003e and robust cable (0.75 mm², 2-conductor). This makes it perfect for \u003cstrong\u003eoutdoor jobs \/ on-site maintenance\u003c\/strong\u003e when you need to power diagnostic equipment without a wall outlet. The device can also be used as an \u003cstrong\u003eOBD Battery Replacement Tool\u003c\/strong\u003e to maintain power during battery replacement and reduce the risk of data loss. The GT105 II is a tool for serious troubleshooters who want control over voltage, communication, and power supply – in a compact format. ✅\u003c\/p\u003e\n\u003c\/section\u003e\n\u003chr\u003e\n\u003csection\u003e\n\u003ch2\u003eIntroduction – what is an OBD Break Out Box and why is the GT105 II so useful?\u003c\/h2\u003e\n\u003cp\u003eAn \u003cstrong\u003eOBD Break Out Box\u003c\/strong\u003e (also called an \u003cstrong\u003eOBD test box\u003c\/strong\u003e or \u003cstrong\u003eOBD breakout\u003c\/strong\u003e) is a tool that sits between the car's OBD2 socket and your diagnostic\/programming equipment. The idea is simple: you get \u003cstrong\u003emore control\u003c\/strong\u003e, \u003cstrong\u003ebetter overview\u003c\/strong\u003e, and the ability to \u003cstrong\u003emeasure\/indicate\u003c\/strong\u003e what is happening on relevant pins – while also being able to power external equipment from the car battery when working outdoors.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eGODIAG GT105 II\u003c\/strong\u003e is the upgraded version of the GT105 and has been enhanced with \u003cstrong\u003e5 new functions\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVehicle voltmeter:\u003c\/strong\u003e displays the vehicle's voltage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCR2032 test:\u003c\/strong\u003e tests the car's remote control battery (CR2032).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow voltage alarm:\u003c\/strong\u003e warns when the car battery is below \u003cstrong\u003e11V\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupporting function for Toyota:\u003c\/strong\u003e steering angle related matching (used in conjunction with compatible diagnostic tools).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupporting function for Lamborghini:\u003c\/strong\u003e ID48 IMMO auxiliary activation (for authorized work with compatible equipment).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn addition, the GT105 II retains its core features: indicators for communication on important pins, the ability to work with separate grounds via PIN4\/PIN5, and the function as a \u003cstrong\u003e12V power adapter\u003c\/strong\u003e for on-site jobs. For those working with ECUs, diagnostics, and vehicle electronics, it's a tool that often saves time, reduces \"guessing,\" and can prevent problems during voltage-sensitive moments.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eSpecifications (bullet list)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e Newest GODIAG GT105 II OBD Break Out Box\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e OBD2 Break Out Box \/ ECU Connector \/ OBD diagnostic \u0026amp; programming adapter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage display:\u003c\/strong\u003e Shows vehicle voltage directly on the device\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow voltage alarm:\u003c\/strong\u003e Warning when car battery is below \u003cstrong\u003e11V\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCR2032 test:\u003c\/strong\u003e Tests remote control battery CR2032\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommunication indicators:\u003c\/strong\u003e PWM+ (PIN2), CANH (PIN6), CANL (PIN14), K-line (PIN7)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOBD ground points:\u003c\/strong\u003e PIN4 Body GND, PIN5 Signal GND (separated)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePIN4\/PIN5 mode:\u003c\/strong\u003e Can be switched between \u003cstrong\u003eshorted\u003c\/strong\u003e and \u003cstrong\u003enon-shorted\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutdoor power supply:\u003c\/strong\u003e Draws power from car battery and provides \u003cstrong\u003eDC12V\u003c\/strong\u003e to external equipment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDC cable:\u003c\/strong\u003e 0.75 mm² 2-conductor (sheathed cable)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDC connector:\u003c\/strong\u003e Supports DC \u003cstrong\u003e5.5×2.5\u003c\/strong\u003e \/ \u003cstrong\u003e5.5×2.1\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection:\u003c\/strong\u003e Resettable \u003cstrong\u003e7A fuse\u003c\/strong\u003e in DC connector\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector quality:\u003c\/strong\u003e Pure copper in female connector for repeated insertions\/removals and long lifespan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery clamps:\u003c\/strong\u003e Environmentally friendly salt spray-treated, approx. 0.5 mm thickness (according to info)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLaboratory connection:\u003c\/strong\u003e DC power interface and dedicated laboratory power connector\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e 1× GT105 II unit, 1× power cable with battery clamps\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eKeywords \u0026amp; variations (H2\/H3 for SEO and clarity)\u003c\/h2\u003e\n\u003cp\u003eThe GT105 II can be described as an \u003cstrong\u003eOBD Break Out Box\u003c\/strong\u003e, \u003cstrong\u003eOBD2 breakout box\u003c\/strong\u003e, \u003cstrong\u003eOBD test box\u003c\/strong\u003e, \u003cstrong\u003eECU connector\u003c\/strong\u003e, \u003cstrong\u003eOBD2 power adapter\u003c\/strong\u003e, \u003cstrong\u003eECU programming adapter\u003c\/strong\u003e, \u003cstrong\u003ediagnostic adapter with voltmeter\u003c\/strong\u003e, or \u003cstrong\u003eOBD battery backup tool\u003c\/strong\u003e. If you are looking for a tool that displays vehicle voltage, helps you see communication status (CAN\/K-line\/PWM), and can also provide 12V to equipment outdoors – then this is the right category.\u003c\/p\u003e\n\u003ch3\u003eOBD2 breakout box for ECU programming\u003c\/h3\u003e\n\u003cp\u003eWhen working with ECU programming or advanced diagnostics, you often want to know if communication is actually getting through, and you want to avoid voltage drops. The GT105 II makes this easier through indicators and voltage display.\u003c\/p\u003e\n\u003ch3\u003eOBD battery backup for battery replacement\u003c\/h3\u003e\n\u003cp\u003eAs an \"OBD Battery Replacement Tool,\" the GT105 II can help maintain power during battery replacement and reduce the risk of settings and data being affected by power outages.\u003c\/p\u003e\n\u003ch3\u003eOn-site maintenance – power for diagnostic equipment outdoors\u003c\/h3\u003e\n\u003cp\u003eThe tool can draw power from the car battery and deliver DC12V to diagnostic\/programming equipment when you work outdoors, without access to a fixed power source.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eProduct overview – what the GT105 II does in practice\u003c\/h2\u003e\n\u003cp\u003eThe GT105 II is used to connect the OBD2 port to diagnostic\/programming equipment, while simultaneously providing you with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual communication status:\u003c\/strong\u003e indicators flash for data on PWM\/CAN\/K-line.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage control:\u003c\/strong\u003e voltage display and warning below 11V.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible grounding:\u003c\/strong\u003e separate PIN4\/PIN5 and selectable shorted\/non-shorted mode.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal DC12V:\u003c\/strong\u003e power to equipment via DC connector with fuse.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery replacement support:\u003c\/strong\u003e helps keep the system powered to minimize the effects of power interruptions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe tool is developed with workshop logic in mind: quick checks, robust connectors, clear indicators, and practical protections (like fuses) to handle everyday connections.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eFunctions and areas of use\u003c\/h2\u003e\n\u003ch3\u003e1) Vehicle voltage on display + low voltage alarm\u003c\/h3\u003e\n\u003cp\u003eDuring diagnostics and especially programming, \u003cstrong\u003estable voltage\u003c\/strong\u003e is one of the most important factors. The GT105 II has \u003cstrong\u003evoltage display\u003c\/strong\u003e and can provide an \u003cstrong\u003ealarm prompt\u003c\/strong\u003e if the car battery drops below \u003cstrong\u003e11V\u003c\/strong\u003e. This helps you to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDetect voltage drops before they cause problems.\u003c\/li\u003e\n\u003cli\u003eDetermine when you need an external charger\/trickle charge.\u003c\/li\u003e\n\u003cli\u003eAchieve better quality in programming and diagnostic sessions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e2) Communication indicators (PIN2\/6\/14\/7) – see if the car is “talking”\u003c\/h3\u003e\n\u003cp\u003eThe device has indicators for \u003cstrong\u003ePWM+ (PIN2)\u003c\/strong\u003e, \u003cstrong\u003eCANH (PIN6)\u003c\/strong\u003e, \u003cstrong\u003eCANL (PIN14)\u003c\/strong\u003e, and \u003cstrong\u003eK-line (PIN7)\u003c\/strong\u003e. When data is communicated, the respective light flashes. This makes it easy to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAssess whether the diagnostic tool is actually communicating with the car.\u003c\/li\u003e\n\u003cli\u003eDetect a \"silent\" bus (e.g., if the connector\/pin\/adapter is faulty).\u003c\/li\u003e\n\u003cli\u003eGet quick troubleshooting info without changing tools or guessing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e3) Separate grounds: PIN4 (Body GND) and PIN5 (Signal GND)\u003c\/h3\u003e\n\u003cp\u003eIn some special cases and programming scenarios, it can be valuable to be able to handle \u003cstrong\u003eBody Ground\u003c\/strong\u003e and \u003cstrong\u003eSignal Ground\u003c\/strong\u003e separately. The GT105 II offers independent access to \u003cstrong\u003ePIN4\u003c\/strong\u003e and \u003cstrong\u003ePIN5\u003c\/strong\u003e, which can be helpful for certain modules that require special handling.\u003c\/p\u003e\n\u003ch3\u003e4) PIN4\/PIN5: switch between shorted and non-shorted\u003c\/h3\u003e\n\u003cp\u003eThe GT105 II has a function where \u003cstrong\u003ePIN4 and PIN5 can be switched\u003c\/strong\u003e between \u003cstrong\u003eshort-circuit\u003c\/strong\u003e and \u003cstrong\u003enon-short-circuit\u003c\/strong\u003e. This is an advanced tool mode that can be relevant in certain workflows and tests. \u003cstrong\u003eRecommendation:\u003c\/strong\u003e Use this only if you know why you are doing it and are following instructions from your equipment\/work process.\u003c\/p\u003e\n\u003ch3\u003e5) DC12V power outdoors – power your equipment from the car battery\u003c\/h3\u003e\n\u003cp\u003eThe GT105 II is designed for \u003cstrong\u003eoutdoor work \/ on-site maintenance\u003c\/strong\u003e. It draws power from the car battery and can provide \u003cstrong\u003eDC12V\u003c\/strong\u003e via a DC connector (DC 5.5×2.5 \/ 5.5×2.1) to diagnostic equipment that needs 12V when working outdoors. The DC connector has a \u003cstrong\u003eresettable 7A fuse\u003c\/strong\u003e for protection. The cable is specified as \u003cstrong\u003e0.75 mm²\u003c\/strong\u003e 2-conductor and the battery clamps have been treated to better withstand environmental influences.\u003c\/p\u003e\n\u003ch3\u003e6) CR2032 test for car remote control\u003c\/h3\u003e\n\u003cp\u003eThe new GT105 II can also test the \u003cstrong\u003eCR2032\u003c\/strong\u003e battery in the car's remote control. This is practical when the customer experiences reduced range or intermittent problems with the remote and you want to quickly confirm the battery status.\u003c\/p\u003e\n\u003ch3\u003e7) OBD Battery Replacement Tool – power support during battery replacement\u003c\/h3\u003e\n\u003cp\u003eDuring battery replacement, power interruptions can in some cases lead to undesirable side effects. The GT105 II can be used to \u003cstrong\u003emaintain power\u003c\/strong\u003e and reduce the risk of data\/setting loss. According to the product text, it can help to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePrevent the clock from changing\u003c\/li\u003e\n\u003cli\u003ePrevent speakers\/audio systems from locking\u003c\/li\u003e\n\u003cli\u003ePrevent IMMO from locking\u003c\/li\u003e\n\u003cli\u003ePrevent glass\/door functions from needing \"resetting\"\u003c\/li\u003e\n\u003cli\u003ePrevent throttle body from needing resetting\u003c\/li\u003e\n\u003cli\u003eKeep warning lights off\u003c\/li\u003e\n\u003cli\u003ePrevent fault codes triggered by power interruption\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e The effect may vary between car models and systems. The purpose is to avoid unnecessary reprogramming and \"reset\" behaviors that can occur during power outages.\u003c\/p\u003e\n\u003ch3\u003e8) Supporting special functions (Toyota \/ Lamborghini \/ IMMO tools)\u003c\/h3\u003e\n\u003cp\u003eThe GT105 II mentions supporting functions for \u003cstrong\u003eToyota steering angle matching\u003c\/strong\u003e and \u003cstrong\u003eLamborghini ID48 IMMO auxiliary activation\u003c\/strong\u003e. These functions are normally used \u003cstrong\u003ein conjunction with compatible diagnostic\/programming equipment\u003c\/strong\u003e and \u003cstrong\u003eauthorized workflows\u003c\/strong\u003e. We recommend that these functions are only used by professionals with the correct authorization and documented ownership\/assignment.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eProduct build quality – details that make a difference in everyday use\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePure copper in female connector:\u003c\/strong\u003e supports repeated insertions\/removals and long lifespan.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard OBD2 PIN4\/PIN5:\u003c\/strong\u003e independent grounds for special programming.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePIN4\/PIN5 toggle mode:\u003c\/strong\u003e shorted\/non-shorted for customized scenarios.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDC cable 0.75 mm²:\u003c\/strong\u003e robust cable for DC power supply.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDC 5.5×2.5 \/ 5.5×2.1:\u003c\/strong\u003e compatible with commonly used 12V inputs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResettable 7A fuse:\u003c\/strong\u003e protection in the DC connector.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDedicated laboratory connection:\u003c\/strong\u003e DC power interface and lab power connector for workshop environment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eCompatibility – what is the GT105 II suitable for?\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eGODIAG GT105 II\u003c\/strong\u003e is designed for use with vehicles that have an \u003cstrong\u003eOBD2 socket\u003c\/strong\u003e (16-pin) and with diagnostic\/programming equipment connected via OBD. It is particularly suitable when you:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNeed \u003cstrong\u003evisual communication status\u003c\/strong\u003e (CAN\/K-line\/PWM) during diagnostics.\u003c\/li\u003e\n\u003cli\u003eWant \u003cstrong\u003evoltage control\u003c\/strong\u003e and low voltage alarm during sensitive moments.\u003c\/li\u003e\n\u003cli\u003eNeed \u003cstrong\u003e12V power\u003c\/strong\u003e for equipment during \u003cstrong\u003eon-site maintenance\u003c\/strong\u003e without a fixed power source.\u003c\/li\u003e\n\u003cli\u003eWork with \u003cstrong\u003eECU programming\u003c\/strong\u003e where stable power supply and clear communication indication are valuable.\u003c\/li\u003e\n\u003cli\u003eWant power support during \u003cstrong\u003ebattery replacement\u003c\/strong\u003e to reduce the risk of power outage side effects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor special functions (e.g., Toyota steering angle matching or IMMO-supporting modes), compatible equipment and correct working methods according to the tool manufacturer are normally required.\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\u003eThe guide below focuses on \u003cstrong\u003esafe and legitimate\u003c\/strong\u003e uses: connection, voltage control, power supply, indicators, pin modes, and battery replacement. For any immobilizer\/key-related workflows, always follow the instructions from your authorized equipment and work with documented ownership\/assignment.\u003c\/p\u003e\n\u003ch3\u003ePart 1: Preparations and safety\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePark safely:\u003c\/strong\u003e gear in P\/neutral, parking brake on, good ventilation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck the car battery:\u003c\/strong\u003e if the battery is very weak, the voltage can drop. The GT105 II warns below 11V – take the warning seriously.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvoid short circuits:\u003c\/strong\u003e keep battery clamps separated and never connect positive\/negative incorrectly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWork methodically:\u003c\/strong\u003e always connect according to the steps below and do not pull cables unnecessarily.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003ePart 2: Connect the GT105 II to the car's OBD2 socket\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eLocate the car's \u003cstrong\u003eOBD2 socket (16-pin)\u003c\/strong\u003e, usually under the dashboard on the driver's side.\u003c\/li\u003e\n\u003cli\u003eInsert the \u003cstrong\u003eGT105 II\u003c\/strong\u003e into the OBD2 socket until it is firmly seated.\u003c\/li\u003e\n\u003cli\u003eTurn on the ignition if your diagnostic equipment requires it (e.g., ignition on, engine off) – follow your diagnostic equipment's recommendation.\u003c\/li\u003e\n\u003cli\u003eCheck that the \u003cstrong\u003evoltage display\u003c\/strong\u003e is shown and note the value.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003ePart 3: Check vehicle voltage and low voltage alarm\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eRead the voltage on the GT105 II.\u003c\/li\u003e\n\u003cli\u003eIf an \u003cstrong\u003ealarm\u003c\/strong\u003e is displayed (below 11V): discontinue sensitive operations and secure the voltage, e.g., with a trickle charger\/stable power supply (depending on the working method).\u003c\/li\u003e\n\u003cli\u003eFor programming\/advanced diagnostics: strive for stable voltage and avoid running voltage-sensitive sessions on a weak battery.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003ePart 4: Connect diagnostic\/programming equipment and read the indicators\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eConnect your diagnostic device\/programming unit to the GT105 II according to your setup (OBD cable\/adapter).\u003c\/li\u003e\n\u003cli\u003eStart communication in your diagnostic equipment.\u003c\/li\u003e\n\u003cli\u003eObserve the indicators: \u003cstrong\u003ePWM+ (PIN2)\u003c\/strong\u003e, \u003cstrong\u003eCANH (PIN6)\u003c\/strong\u003e, \u003cstrong\u003eCANL (PIN14)\u003c\/strong\u003e, \u003cstrong\u003eK-line (PIN7)\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eWhen there is data communication, the relevant indicator should \u003cstrong\u003eflash\u003c\/strong\u003e. If nothing flashes: check ignition mode, OBD connector, cable, and that the correct protocol\/vehicle is selected in the diagnostic tool.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003ePart 5: Use DC12V output to power equipment (on-site maintenance)\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003ePrepare the \u003cstrong\u003epower cable with battery clamps\u003c\/strong\u003e (included).\u003c\/li\u003e\n\u003cli\u003eConnect the \u003cstrong\u003ered clamp to positive (+)\u003c\/strong\u003e on the car battery.\u003c\/li\u003e\n\u003cli\u003eConnect the \u003cstrong\u003eblack clamp to negative (−)\u003c\/strong\u003e on the car battery.\u003c\/li\u003e\n\u003cli\u003eConnect your equipment to the GT105 II's \u003cstrong\u003eDC output\u003c\/strong\u003e (DC 5.5×2.5 or 5.5×2.1 depending on your device).\u003c\/li\u003e\n\u003cli\u003eCheck that the device is receiving power. If it does not start: check the connection, cable, and that the fuse has not blown (resettable 7A fuse).\u003c\/li\u003e\n\u003cli\u003eKeep an eye on the voltage display during operation. If the voltage drops sharply: pause and secure the battery.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eTip:\u003c\/strong\u003e This method is particularly useful when you need to power diagnostic equipment outdoors or on-site where you do not have 230V available.\u003c\/p\u003e\n\u003ch3\u003ePart 6: PIN4\/PIN5 – separate grounds and toggle mode (advanced)\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eIdentify if your working method requires special handling of \u003cstrong\u003ePIN4 Body GND\u003c\/strong\u003e and \u003cstrong\u003ePIN5 Signal GND\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eOnly use the toggle between \u003cstrong\u003eshorted\u003c\/strong\u003e and \u003cstrong\u003enon-shorted\u003c\/strong\u003e mode if you have a clear purpose and follow your equipment's instructions.\u003c\/li\u003e\n\u003cli\u003eIf in doubt: use standard mode and avoid changing PIN modes unnecessarily.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eSafety note:\u003c\/strong\u003e Incorrect pin handling can cause communication problems or affect sensitive electronics. Always work with the correct method and good knowledge.\u003c\/p\u003e\n\u003ch3\u003ePart 7: CR2032 test (remote control battery)\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eSelect\/activate CR2032 test mode according to the device's function.\u003c\/li\u003e\n\u003cli\u003eTest the remote control battery and note the result.\u003c\/li\u003e\n\u003cli\u003eIf the battery is weak: replace the CR2032 in the remote control and verify improved function.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003ePart 8: Battery replacement with power support (OBD Battery Replacement Tool)\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003ePlan the battery replacement: ensure you have the correct battery and tools.\u003c\/li\u003e\n\u003cli\u003eConnect the GT105 II as instructed for power support (so that the system can maintain power during the replacement).\u003c\/li\u003e\n\u003cli\u003eFollow the car's recommended battery replacement procedure.\u003c\/li\u003e\n\u003cli\u003eAfter replacement: check that voltage and system functions are stable.\u003c\/li\u003e\n\u003cli\u003eIf the car requires registration\/coding of a new battery: do this with the correct diagnostic tool according to the car's requirements.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e All cars react differently to battery replacement. The goal of power support is to reduce the risk of unwanted side effects of power interruptions.\u003c\/p\u003e\n\u003ch3\u003ePart 9: Conclusion and disconnection\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eEnd diagnostic sessions in your equipment.\u003c\/li\u003e\n\u003cli\u003eUnplug DC equipment if connected.\u003c\/li\u003e\n\u003cli\u003eDisconnect battery clamps: \u003cstrong\u003enegative (black)\u003c\/strong\u003e first, \u003cstrong\u003epositive (red)\u003c\/strong\u003e last.\u003c\/li\u003e\n\u003cli\u003eUnplug the GT105 II from the OBD2 socket and store it dry and protected.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eTips \u0026amp; advice – get better results for diagnostics and programming\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage first:\u003c\/strong\u003e If the car is near the low voltage limit, secure the voltage before performing sensitive operations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRead the indicators:\u003c\/strong\u003e Flashing CAN\/K-line\/PWM is a quick \"sanity check\" for communication.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStable power for outdoor jobs:\u003c\/strong\u003e Use the DC12V output when powering equipment on-site, but make sure the car battery can handle it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrect connection:\u003c\/strong\u003e Ensure the OBD connector is fully seated and that cables are not under tension.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePIN4\/PIN5 with caution:\u003c\/strong\u003e Only switch modes when you know why – otherwise, use standard mode.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cli\u003e\n\u003cstrong\u003eBattery Replacement:\u003c\/strong\u003e Power support can mitigate side effects, but some cars still require battery registration after replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument:\u003c\/strong\u003e Note voltage before\/during\/after work, especially if troubleshooting intermittent communication issues.\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) What is an OBD Break Out Box?\u003c\/h3\u003e\n\u003cp\u003eIt's a tool that connects between the car's OBD2 socket and diagnostic equipment to provide a better overview, indicators, and sometimes extra power\/pin functions.\u003c\/p\u003e\n\u003ch3\u003e2) What's new in GT105 II compared to GT105?\u003c\/h3\u003e\n\u003cp\u003eGT105 II is an upgraded version with five new functions: voltage display, CR2032 test, low voltage alarm (\u003c11V), supporting Toyota steering angle matching, and supporting Lamborghini ID48 IMMO auxiliary activation.\u003c\/p\u003e\n\u003ch3\u003e3) What indicator lights are there and what do they show?\u003c\/h3\u003e\n\u003cp\u003eIt has indicators for \u003cstrong\u003ePWM+ (PIN2)\u003c\/strong\u003e, \u003cstrong\u003eCANH (PIN6)\u003c\/strong\u003e, \u003cstrong\u003eCANL (PIN14)\u003c\/strong\u003e, and \u003cstrong\u003eK-line (PIN7)\u003c\/strong\u003e. During data communication, the active indicator flashes.\u003c\/p\u003e\n\u003ch3\u003e4) Why is voltage display important?\u003c\/h3\u003e\n\u003cp\u003eVoltage drops can cause interrupted sessions and problems during diagnostics\/programming. With voltage display and low voltage alarm, you get quick control.\u003c\/p\u003e\n\u003ch3\u003e5) What does the low voltage alarm below 11V mean?\u003c\/h3\u003e\n\u003cp\u003eIt's a warning that the car battery is low. For sensitive operations, you should pause and secure the voltage before continuing.\u003c\/p\u003e\n\u003ch3\u003e6) Can GT105 II power other equipment?\u003c\/h3\u003e\n\u003cp\u003eYes, it can draw power from the car battery and deliver \u003cstrong\u003eDC12V\u003c\/strong\u003e via a DC connector (5.5×2.5 \/ 5.5×2.1) with a resettable 7A fuse.\u003c\/p\u003e\n\u003ch3\u003e7) Is this a “power adapter” for outdoor jobs?\u003c\/h3\u003e\n\u003cp\u003eYes, it is described as suitable for on-site maintenance by drawing 12V from the car battery to equipment when you lack a fixed power source.\u003c\/p\u003e\n\u003ch3\u003e8) What are PIN4 and PIN5 on OBD2?\u003c\/h3\u003e\n\u003cp\u003ePIN4 is typically “Body GND” and PIN5 “Signal GND”. GT105 II offers independent access to these and can switch mode between short-circuited\/not short-circuited.\u003c\/p\u003e\n\u003ch3\u003e9) When should I use the switch for PIN4\/PIN5?\u003c\/h3\u003e\n\u003cp\u003eOnly in advanced scenarios where you know why it's required and follow instructions from your diagnostic\/programming tool.\u003c\/p\u003e\n\u003ch3\u003e10) Can GT105 II help with battery replacement?\u003c\/h3\u003e\n\u003cp\u003eYes, it can be used as an OBD Battery Replacement Tool to maintain power during battery replacement and reduce the risk of data loss and side effects.\u003c\/p\u003e\n\u003ch3\u003e11) Does it always prevent problems during battery replacement?\u003c\/h3\u003e\n\u003cp\u003eIt can reduce the risk, but car models differ. Some cars still require battery registration or resetting after replacement.\u003c\/p\u003e\n\u003ch3\u003e12) What is the CR2032 test?\u003c\/h3\u003e\n\u003cp\u003eIt's a function to test the battery (CR2032) in the car's remote control.\u003c\/p\u003e\n\u003ch3\u003e13) Can I use it for Toyota steering angle matching?\u003c\/h3\u003e\n\u003cp\u003eThe GT105 II has a supporting function for this, but it is used together with compatible equipment and the correct working method.\u003c\/p\u003e\n\u003ch3\u003e14) What does Lamborghini ID48 IMMO auxiliary activation mean?\u003c\/h3\u003e\n\u003cp\u003eIt is a supporting function mentioned in the product text and is normally used in authorized workflows with compatible tools and proper authorization.\u003c\/p\u003e\n\u003ch3\u003e15) Is GT105 II the same as a fault code reader?\u003c\/h3\u003e\n\u003cp\u003eNo, it's a breakout box\/adapter. It shows voltage and communication status and can provide power, but the diagnosis itself is done by your diagnostic tool.\u003c\/p\u003e\n\u003ch3\u003e16) Does it have a fuse?\u003c\/h3\u003e\n\u003cp\u003eYes, the DC connector has a \u003cstrong\u003eresettable 7A fuse\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003e17) Which DC connectors are supported?\u003c\/h3\u003e\n\u003cp\u003eIt supports \u003cstrong\u003eDC 5.5×2.5\u003c\/strong\u003e and \u003cstrong\u003eDC 5.5×2.1\u003c\/strong\u003e according to product information.\u003c\/p\u003e\n\u003ch3\u003e18) Can I use it in a workshop \"on the bench\" with an ECU?\u003c\/h3\u003e\n\u003cp\u003eThe product text mentions that it can be used with a “full protocol ECU programming cable” for studio\/lab connection. Such cables may be optional and the working method depends on your setup.\u003c\/p\u003e\n\u003ch3\u003e19) Is the ECU full protocol programming line included?\u003c\/h3\u003e\n\u003cp\u003eAccording to the text, the OBD2 full protocol ECU programming line can be purchased separately.\u003c\/p\u003e\n\u003ch3\u003e20) What is included in the package?\u003c\/h3\u003e\n\u003cp\u003e1× GT105 II unit and 1× power cable with battery clamps.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003ePackage Contents – what's included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 pc × \u003cstrong\u003eGODIAG GT105 II\u003c\/strong\u003e (host\/unit)\u003c\/li\u003e\n\u003cli\u003e1 pc × \u003cstrong\u003ePower cable with battery clamps\u003c\/strong\u003e\n\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\u003eLegal Use Only:\u003c\/strong\u003e The tool must be used for legitimate diagnostic, programming, and service work with documented ownership\/assignment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIMMO\/Key Functions:\u003c\/strong\u003e Any immobilizer\/key-related functions must only be used by authorized professionals and in accordance with laws and manufacturer guidelines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage and Risk:\u003c\/strong\u003e Voltage drops during programming can cause interrupted sessions and, in the worst case, control unit errors. Ensure stable voltage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePIN Management:\u003c\/strong\u003e Changing PIN4\/PIN5 mode or working with special grounds is advanced. Incorrect handling can cause communication problems or affect electronics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery Replacement:\u003c\/strong\u003e Power support can reduce side effects, but some vehicles still require battery registration or adaptation procedures after replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquipment Dependent:\u003c\/strong\u003e Results and functionality depend on the diagnostic\/programming equipment you connect and the vehicle's system support.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eSummary – why many choose GT105 II\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eGODIAG GT105 II\u003c\/strong\u003e is a well-thought-out \u003cstrong\u003eOBD2 Break Out Box\u003c\/strong\u003e for those who want to work more controllably with diagnostics and programming: you get \u003cstrong\u003evoltage display\u003c\/strong\u003e, \u003cstrong\u003elow voltage alarm\u003c\/strong\u003e, \u003cstrong\u003eindicators for PWM\/CAN\/K-line\u003c\/strong\u003e, the option of \u003cstrong\u003eseparate grounds\u003c\/strong\u003e (PIN4\/PIN5) and a practical \u003cstrong\u003eDC12V output\u003c\/strong\u003e to power equipment for on-site jobs. In addition, it can be used as \u003cstrong\u003epower support during battery replacement\u003c\/strong\u003e to reduce the risk of unwanted side effects from power outages. A strong tool in the workshop – and an even stronger tool when working on-site. ✅\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- Relevanta interna länkar (felkodslasare.se) – robusta Shopify-sök-länkar, inga externa länkar --\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=GODIAG\"\u003eMore products from GODIAG\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-en\/search?q=OBD2\"\u003eOBD2 fault code readers and diagnostic tools\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-en\/search?q=ECU\"\u003eECU \u0026amp; programming accessories\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-en\/search?q=adapter\"\u003eOBD adapters \u0026amp; cables\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-en\/search?q=batteriladdare\"\u003eBattery chargers\/maintenance charging (for stable voltage)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-en\/search?q=batteritestare\"\u003eBattery testers\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"GoDiag","offers":[{"title":"Default Title","offer_id":54615748772108,"sku":"FEL-B0280","price":52.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0746\/4979\/6876\/files\/H3848a8efd03243b58eac2418b8b13c1c4.avif?v=1781472523","url":"https:\/\/www.felkodslasare.se\/en-en\/products\/godiag-gt105-ii-obd-break-out-box-for-ecu-diagnos","provider":"Felkodsläsare","version":"1.0","type":"link"}