Can't pull codes from 94
Thread Starter
Racer
Joined: Sep 2000
Posts: 375
Likes: 0
From: marlboro NJ
Can't pull codes from 94
I had a 'check engine' light come on a few times today, so after checking obvious things (oil, coolant, trans fluid), I bought an OBD II tool to try to read the codes. This is the Acutron Pep Boys sells. I get power to the thing, but 'link error' when I try to do anything with it (read or clear codes). It works on my 2000 Blazer.
I have tried with the key out, in and off, on, and even disconnected the battery for a few minutes, still get the same. I don't see any bent pins or anything, the manual says there might be a seperate fuse for the data link, but I didn't see anything obvious. Any ideas?
I have tried with the key out, in and off, on, and even disconnected the battery for a few minutes, still get the same. I don't see any bent pins or anything, the manual says there might be a seperate fuse for the data link, but I didn't see anything obvious. Any ideas?
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Re: Can't pull codes from 94 (prog-guru)
VIN P in 1996 is OBD2 thats when the switch over occured. Prior to that even though it uses the same ALDL port as OBD2 cars it is still OBD1. As for shorting the pins together, I don't think that will work either as the Corvette PCM does not communicate the same as the earlier ECMs did.
You can download several free scan tools that would work on your car, but you need a cable to communicate with it.
Here is a link that you can check out:
www.akmcables.com
www.ttspowersystems.com
www.moates.net
There is lots of information available at those sites.
[Modified by tjwong, 5:56 PM 5/4/2003]
You can download several free scan tools that would work on your car, but you need a cable to communicate with it.
Here is a link that you can check out:
www.akmcables.com
www.ttspowersystems.com
www.moates.net
There is lots of information available at those sites.
[Modified by tjwong, 5:56 PM 5/4/2003]
Thread Starter
Racer
Joined: Sep 2000
Posts: 375
Likes: 0
From: marlboro NJ
Re: Can't pull codes from 94 (tjwong)
Well I got an auto xray unit and was finally able to pull the codes, right 02 sensor.
I was checking it out and found kind of a ring with a wire attached had wiggled up to the top, so I made it a little tighter. I imagine maybe it is a ground lead or something, no codes so far :)
I was checking it out and found kind of a ring with a wire attached had wiggled up to the top, so I made it a little tighter. I imagine maybe it is a ground lead or something, no codes so far :)
Melting Slicks
Joined: May 2001
Posts: 2,143
Likes: 7
From: San Diego CA
Re: Can't pull codes from 94 (prog-guru)
Pull the codes on a 94 with a paper clip.
http://www.c4vettes.com/codes.htm
http://www.c4vettes.com/codes.htm
