#Obd2 eeprom programmer serial#
Some are serial line protocol, aldl, k line, and many others. KWP2000 (keyword protocol) is another way, you send a series of commands to switch to a flashing routine then send over blocks of data( i made a post where i did a part 1, haven't had time to do a part 2 yet) there is usually a challenge response where the programmer sends a request, the ecu sends a packet back and you reply, if it likes what it sees it allows you to reflash it.Įach oem has their own protocol, which is sometimes (usually) based on who supplied the ecu or the ecu's firmware, sometimes with small modifications. J2534 is basically just an API that connects a flashing tool to a car, then sends a block of data in a defined way, with other commands to reflash the ecu. In the USA J2534 is a standard that allows end users to upgrade the firmware in their cars, its meant to be encrypted but encrypted can mean split into 8 byte packets. Obd ii doesn't really support reflashes, everyone says that because its the OBD II connector but there is a lot more on it, OBD II is usually diagnostics (there are of course outliers) We could also use help with our documentation/Wiki.ĬAN LIN SWCAN J1850 PWM J1850 VPW ISO 91 Multiple No Protocol
#Obd2 eeprom programmer mod#
Mod note: Most of my time is taken up building hardware, if a better person for the community comes along I would be willing to hand over the sub. Our long term goal is to become the most technical car subreddit. We would also like to encourage the use of Open source hardware and software. The car hacking community is alive but fractured and decentralized, let's start by aggregating all of the many projects, and hackers. Discussion is not limited to the ECU, post any hacked DIY Aero, powertrain, suspension, or other car topics the community might like. New age hot rodders, ECO modders, security researchers, the curious, the paranoid, and the tinkerer are all welcome. This is a place for people interested in taking back control of the car they own or keeping others out. However, this brain is a closed, locked-down black box. While the engine is the heart of the car, the ECU has become the ever-evolving, all-knowing brain.
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