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Anti lock brake system electrical schematic?

T

thirdgenfcarnut

New member
I have a 1994 Grand Prix. Does any one know where I can get or happen to have the wiring diagram/schematics for the anti-lock brake system? Even just the plug pinout for the control module under the driver side dash. No one around here has the right equipment to retrieve the trouble codes or does not want to be bothered because it is not OBDII. The local Pontiac dealer wants $95 minimum labor charge just to plug their bidirectional scan tool in and record the codes for me :eek: I have over 11 years experience with 12 volt electronics and trouble shooting... a schematic would be a HUGE help. Any leads would be greatly appreciated. Thanks!
 


thirdgenfcarnut said:
I have a 1994 Grand Prix. Does any one know where I can get or happen to have the wiring diagram/schematics for the anti-lock brake system? Even just the plug pinout for the control module under the driver side dash. No one around here has the right equipment to retrieve the trouble codes or does not want to be bothered because it is not OBDII. The local Pontiac dealer wants $95 minimum labor charge just to plug their bidirectional scan tool in and record the codes for me :eek: I have over 11 years experience with 12 volt electronics and trouble shooting... a schematic would be a HUGE help. Any leads would be greatly appreciated. Thanks!
Click to expand...

I probably have it in my snap on abs booklet. I won't be able to get to it until Monday though.
 
I'm posting large pics so you can see all the details, I turned down my ISO on the camera so its a bit darker but it shows the details better in macro mode. Oh yeah one more thing, if you notice the repair manual date for the schematics it says 1995. The abs system is the same as it the delco moraine VI system which is almost exactly identical to mine. The reason why most small shops don't like working on abs systems is because they don't have scanning equipment to read it. A standard OBDII scanner will no read abs codes. My snap on scanner has a seperate cartridge insert thats needed to read abs codes.

Read my HOW-TO Post as it should be virtually the same for you car

http://www.grandprixforums.net/abs.php

If you have any questions let me know.



 
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THANKYOU VERY MUCH!!!!!! This is a HUGE help. My car is ALDL not OBDII, and thats exactly it, no one but the dealer has the equipment for retrieving codes from the older systems around by me. Or, dont want to be bothered because of programming the scanner and swapping cartridges like you said. The last guy I went to, I told him it was a 94 and he came walking out with a OBDII scanner... I had to tell him twice its ALDL, not OBDII. Thats when they start "umm... uhh... just replace everything then you'll be good to go" Thats not how I roll... I want to know what the problem is then fix it, not just throw parts at a car and hope I get lucky! Thanks again for your help!!!! :th_thumbsup-wink:
 
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