Jump to content

ECM protocol for late 80ies Oldsmobiles?


Oldsmobile Desperado

Recommended Posts

Does the OBD-I interface communicate via 160 baud or 8192 on these cars?

I'm trying to get software to read data via the serial port, and it looks like it discriminates based on the data transmission rate.

Also, it looks like the rate matters when building a connector to RS232, the faster (8192) requires 2 transistors.

 

I also tried to find the actual GM specification on the car, but it's either generic (for a bunch of cars), or non-existent - try to go to the GM's site and get a part number for a ECM, for instance.

 

And lastly, does anyone know any link for OBD-I ALDL protocol. So far I only found the OBD-II ISO docs, etc.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...