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In-depth Analysis of the 9 Kinds of OBD2 Diagnostic Protocols Based On Current Technological Standards In Modern Automotive Diagnostic Tools
Now lots of OBD2 scanner tool supported 9 Kinds of protocols, here are the details analysis of it all: 1. SAE J1850 Pulse Width Modulation (41.6Kbaud) Technical Overview: A legacy protocol using a two-wire differential signal (PWM) for communication. It operates at 41.6Kbaud with dominant/reces...Read more -
Battery Tester Analyzer: Types of Automotive Battery and Relevant Standards
1. Lead-Acid Batteries Description: The most common type for internal combustion engine (ICE) vehicles, composed of six 2V cells in series (total 12V). They use lead dioxide and sponge lead as active materials with sulfuric acid electrolyte. Subtypes: Flooded (Conventional): Requires periodic ...Read more -
OBD2 Code Scanner Diagnostic Tool: MIL Lamp Function, Causes, and Data Utility
Dashboard appears MIL ? 1. What is MIL (Malfunction Indicator Lamp) Function ? The MIL, commonly called the “Check Engine Light,” is a dashboard warning light mandated by OBD2 standards. It illuminates when the vehicle’s Engine Control Unit (ECU) detects a fault affecting emissions, ...Read more -
DTC Look-up Function in OBD2 Diagnostic Tool
Now most OBD2 Code Scanner built-in a DTC Look-up Function, we can check the auto fault codes there and find the car’s problem and resolve it via its notices. The DTC Look-up (Diagnostic Trouble Code Look-up) is a core feature of OBD2 (On-Board Diagnostics II) tools that translates standard...Read more -
EVAP System Test in OBD2 Diagnostics Tool: Overview and Key Insights for Vehicle Owners
The EVAP (Evaporative Emission Control System) test is a critical self-diagnostic function in OBD2-compliant vehicles. It ensures the fuel vapor containment system operates properly, preventing harmful hydrocarbon emissions from escaping into the atmosphere. Here’s a concise breakdown of its fun...Read more -
OBDII Scanner: Read Vehicle Information Function in OBD2 Diagnostics
The Vehicle Information function in OBD2 Code Reader diagnostics retrieves critical identification and configuration data stored in a vehicle’s onboard computer. This data is essential for understanding the vehicle’s specifications, software status, and compliance with regulations. Key Data In...Read more -
OBD2 Diagnostic Tool: Live Data Stream Function and Practical Applications
The Live Data Stream (or Real-Time Data) feature in OBD2 diagnostics allows users to monitor real-time sensor and system data from a vehicle’s onboard computer. This data is transmitted through the OBDii port and provides insights into the vehicle’s operational status, helping identify issues, op...Read more -
OBD-II Smog Check: Functionality and Practical Applications with Global Policy Examples
The smog check (emissions inspection) is a critical component of vehicle environmental compliance, leveraging the On-Board Diagnostics II (OBD-II) system to monitor and ensure that vehicles meet emission standards. Below is a detailed breakdown of its functionality, practical applications, and po...Read more -
What is Freeze Frame Function in OBD2 Diagnostic Tool ?
The freeze frame feature in OBD-II/OBD2/EOBD/CAN diagnostics is a critical tool that captures and stores a snapshot of vehicle operating parameters at the moment a fault (DTC – Diagnostic Trouble Code) is detected. This data includes key metrics such as engine speed (RPM), vehicle speed, coolant...Read more -
OBD2 Basic Knowledge: I/M Readiness in OBD2 Diagnostics: Function and Role in Safe Driving
I/M Readiness Functions: I/M (Inspection and Maintenance) Readiness is a feature in OBD2 (On-Board Diagnostics II) systems that monitors whether a vehicle’s emission-related components and systems have completed their self-checks. After a vehicle’s battery is disconnected or a fault is repaired, ...Read more -
Automotive Battery Tester Analyzer: Functions & Safety Benefits
An automotive battery tester is a critical diagnostic tool designed to evaluate the health and performance of a vehicle’s battery and charging system. Its primary functions include: Voltage Measurement: Accurately checks the battery’s voltage to determine if it is undercharged, fully charg...Read more -
What is different of Mode 6 and Mode 8 in OBD-II Diagnostic Tool ?
OBD-II Mode 6 & Mode 8 Difference: Mode 6 → Best for diagnosing intermittent issues by reviewing stored test data. Mode 8 → Used for active testing and component control, mostly by professionals. For accurate diagnostics, always refer to manufacturer-specific guidelines and use comp...Read more
