pulling codes for '95 GM

[7-UP BILL]

I seem to be having trouble pulling the codes with a jumper wire. I was told to connect to terminals A and B, then the "ck eng lite" would flash it's sequence to tell me the code. I'm doing this in the KOEO mode. Nothing happens. FYI, the code i'm looking to pull is for the ABS. The lite came on steady about 1 month ago and ABS does not work now. Car is a '95 Grand Am. Thanks in advance for your help.

[KA9MOT]

1995 may be a little late for that method. Give me a little time and I'll get you the proper method.

[KA9MOT]

Do you have a 12 pin Data link Connector or does yours have 16 pins?

[KA9MOT]

Here is the procedure for 1995 and older GM's as copied from Chilons website:





Remember that a code only points to the faulty circuit NOT necessarily to a faulty component. Loose, damaged or corroded connections may contribute to a fault code on a circuit when the sensor or component is operating properly. Be sure that the components are faulty before replacing them, especially the expensive ones.

The Assembly Line Diagnostic Link (ALDL) connector or Data Link Connector (DLC) may be located under the dash and sometimes covered with a plastic cover labeled DIAGNOSTIC CONNECTOR.

The diagnostic trouble codes can be read by grounding test terminal B. The terminal is most easily grounded by connecting it to terminal A (internal ECM ground). This is the terminal to the right of terminal B on the top row of the ALDL connector.
Once the terminals have been connected, the ignition switch must be moved to the ON position with the engine not running.
The Service Engine Soon or Check Engine light should be flashing. If it isn't, turn the ignition OFF and remove the jumper wire. Turn the ignition ON and confirm that light is now on. If it is not, replace the bulb and try again. If the bulb still will not light, or if it does not flash with the test terminal grounded, the system should be diagnosed by an experienced driveability technician. If the light is OK, proceed as follows.
The code(s) stored in memory may be read through counting the flashes of the dashboard warning lamp. The dash warning lamp should begin to flash Code 12. The code will display as one flash, a pause and two flashes. Code 12 is not a fault code. It is used as a system acknowledgment or handshake code; its presence indicates that the PCM can communicate as requested. Code 12 is used to begin every diagnostic sequence. Some vehicles also use Code 12 after all diagnostic codes have been sent.
After Code 12 has been transmitted 3 times, the fault codes, if any, will each be transmitted 3 times. The codes are stored and transmitted in numeric order from lowest to highest.
The order of codes in the memory does not indicate the order of occurrence.

If there are no codes stored, but a driveability or emissions problem is evident, the system should be diagnosed by an experienced driveability technician.
If one or more codes are stored, record them. Refer to the applicable Diagnostic Code chart in this section.
Switch the ignition OFF when finished with code retrieval or scan tool readings.
After making repairs, clear the trouble codes and operate the vehicle to see if it will reset, indicating further problems.

I modified the picture some time ago to make things a little easier.

[7-UP BILL]

according to your drawing, i should have quite a few conncetors in there. All I see are A, B, and M. Going to try again now. Thanks for your detailed response.

[7-UP BILL]

Still no good. I did notice that the diagnostic connector under the dash has the three connectors in the lower right corner,(2) and the upper right corner,(1). there are no other connectors present. Which Chiltons website did you use? The only one I could access wanted me to buy the books. Thx

[KA9MOT]

All you need to do is ground pin B. If it doesn't work then something is wrong. Notice, all those other pins say "(if used)" That means they might not be there.

The link for Chiltons is:

Chiltons

Good luck and keep us updated.
Steve

[justen]

For 25 bucks I would go to Jc whitney and buy a code reader. Plus you can test abs with it.

[7-UP BILL]

Justen, Just an FYI, but code readers around here, (NJ) start at $100. I'm not keeping this car for much longer, maybe a year, so buying a reader doesn't make much sense to me. Thanks for your input. If anybody has used a JC Whitney reader and can verify it's quality, please do so.

[justen]

The code reader from Jc whitney basicly does what beefy was trying to do with a multimeter. Usually a code reader will come with a book of codes and some trouble shooting, Also if you plan on buying another gm product down the road that is close to the same year as the car/truck you have now. It will usually work for that as well. I baught a jc whitney code reader and It will test 95 through 00. But it also says in the book some cars aren't covered like a caddy has it's own code reader of some sort. If I can't get the codes with that then, I usually do beefys method. Or grab one from work and bring it home.

[1fatcat]

You can only get engine and tranny codes using the A B jumper method. There is a special method for ABS codes, I'll try to get the method for you tomorrow.

[fotw]

Beefy did you just google that or do you know of a site that has all that info, if so what is it please Also you are comp savie (spelling??) that site that is a chilton look up how can I save the whole site to my comp/disk. This is the site that I am talking about. It only lets me save up to 3 whole pages

[KA9MOT]

fotw, well buddy I tried to find out for you but I am unable to find anything. I will continue to see what I can find. Maybe somebody else would know. For the time being, add it to your favorites (or bookmarks for you netscape and AOHell users).

[fotw]

I did, but I would to be able to dl it so that if they every decide not to keep there server running that I will still have it.

What about those codes?

[1fatcat]

Well buddy, I got bad news for ya! A 95 Grand Am has only one method for pulling ABS codes...a scanner. If you go out to buy a scanner, be sure that the one you get is capable of ABS interface. Not all of them are.