全球统一的重型发动机的车载诊断系统(WWH-OBD) ISO/PAS 27145 is intended to become the single communication standard for access to OBD-related information. To allow for a smooth migration from the existing communication standards to this future world-wide standardized c…

On-Board Diagnostics J1962 Diagnostic Connector Equivalent to ISO/DIS 15031-3: December 14, 2001J2012 Diagnostic Trouble Code Definitions J1939 Recommended Practice for a Serial Control and Communications Vehicle NetworkJ1979 E/E Diagnostic Test Mode…

http://faq.ford77.ru/pdf/eec/DataSheet.pdf FEATURES:Operating Voltage 5.0 VOperating Current 5 Ma. TypClock: 20 MHzInputs: (0-5V levels)Serial Input (19200 Baud)PWM receiveVPW receiveISO 9141-2Outputs (0-5V levels)Serial output (19200 Baud)PWM transm…

http://elmelectronics.com/DSheets/ELM323DS.pdf…

http://www.obdexperts.co.uk/stack.html OBD II Software OBD Experts can provide you with ready to use off-the-shelf OBD II software implementing the following automotive protocols: ISO 9141-2 KWP 2000-4 SAE J1850 PWM (Ford SCP) SAE J1850 VPW (GM Class…

作者:autogeek 原文链接:http://www.cnblogs.com/autogeek/p/4458591.html 前言 由于工作中经常用到ISO-14229,因此决定对该协议做个总体介绍和总结,既是对自己学习的总结,也能够给初次涉及该协议的朋友一个参考. 首先简要介绍什么是ISO-14229,至于可以在网上找到的大篇理论介绍我就略过不讲了,有兴趣可以自行搜索.简单的说,它就是一个用于汽车行业诊断通信的需求规范,它只规定了与诊断相关的服务需求,并没有涉及通信机制,因此要实现一个完整的…

http://ecad.tu-sofia.bg/et/2005/pdf/Paper097-P_Dzhelekarski1.pdf INITIALIZATION Prior to any diagnostic communication an initialization must be performed. This is the process of activating the OBD system for starting communication. The initialization…

Vehicle Network Protocols There are 5 protocols in the OBD2 system and a car will normally only use 1 of them PROTOCOLS J1850 PWM (pulse width modulation)  used by Ford Motor Company and Mazda J1850 VPW (variable width modulation) used by General Mot…

汽车上的OBD-II接口(母):  ELM327用到的引脚: 2: SAE-J1850 PWM和SAE-1850 VPW总线(+) 4. 车身地 5. 信号地 6. CAN high (ISO 15765-4和SAE-J2284)  7. ISO 9141-2和ISO 14230-4总线的K线 10. SAE-J1850 PWM协议总线(-)(not SAE-1850 VPW) Europe, etc. Chrysler CCD Bus(+) 14. CAN low (ISO 15765-4和S…

http://www.obdsol.com/stn1110/ Safe, secure bootloader. Reflash the firmware in the field, even over a poor quality link and avoid expensive product recalls. Fully compatible with ELM327 command set, ensuring out-of-the-box compatibility with the doz…