Making my own code reader

Hi all,

Something Ive been wanting to do for a while is make my own code reader for
my 98 SL2. It seems that you guys in the US can go to a certain store and
have it read for free, but I've never found that up here, and well, id like
the convenience of playing with it in my own garage . Now, actually doing
this should be fairly simple, just build my own cable and communicate with
the car on my Palm pilot, the only problem is that I need to know the pin
out as well as the communication protocol that is used. Is this information
public domain?, can I get my hands on this anywhere?

TIA!

Wurm

 

Hi Wurm

The information you are looking for is mostly public domain. The
maufactures use their own connectors, but even that information can be
found. Do a search for OBDII or OBD-II readers. However some information
is "extended", as such it is outside EPA reporting requirements, so only the
manufactures and some hackers know how to get it out of the computer.

David

 

Hi,

Ok, thanks for the info, ill do some hunting this weekend . Heck, I gotta
find a use for the Palm and it seems hack jobs like this are the forte of
that machine.

Phil