Pulling the codes
Thread Starter
Safety Car
Joined: Jul 2001
Posts: 3,615
Likes: 1
From: New Lenox IL
Pulling the codes
I brought in my car today to have the codes pulled up and looked at and the guy told me he couldn't. He said that unless there's a service engine light on, there are no codes to pull up. Is this true?
Melting Slicks
Joined: May 2001
Posts: 2,143
Likes: 7
From: San Diego CA
Re: Pulling the codes (Lord Odin)
Not necessarily. You could have history codes "Hxx" designations. Try doing it yourself.
http://www.c4vettes.com/codes.htm
http://www.c4vettes.com/codes.htm
Race Director
Joined: Feb 2003
Posts: 11,671
Likes: 20
From: Lake Wylie SC
Re: Pulling the codes (Lord Odin)
I think what he was getting at is if there was any service engine lights to cause you to bring it in. If there was a code stored, I'm pretty sure there was a service engine light even though it was only on for a short time. If you know anybody with a scan tool Tech 1 you can check the sensors and switches that feed the ECM. It will also display any code stored in the ECM memory.
Hope this helps
Strick :flag :flag :flag
Oh, I like the pic of your pride and joy. It was a good year :yesnod:
[Modified by Strick, 4:12 PM 4/15/2003]
Hope this helps
Strick :flag :flag :flag
Oh, I like the pic of your pride and joy. It was a good year :yesnod:
[Modified by Strick, 4:12 PM 4/15/2003]
Drifting
Joined: Jul 2002
Posts: 1,273
Likes: 0
From: Olathe, KS USA
Re: Pulling the codes (Strick)
If you don't have a GM service manual then get one. You can read any codes just by grounding diffrent ports in the ADL connector.
A to G is CCM, It shows codes In CCM module-1, ECM mod-4 and ASR/ABS mod-9 on the speedo LCD screen.
If you have no codes the first thing you will see is "C 12"
:seeya :flag
[Modified by C4Crazy787, 4:27 PM 4/15/2003]
A to G is CCM, It shows codes In CCM module-1, ECM mod-4 and ASR/ABS mod-9 on the speedo LCD screen.
If you have no codes the first thing you will see is "C 12"
:seeya :flag
[Modified by C4Crazy787, 4:27 PM 4/15/2003]
Safety Car
Joined: Aug 2002
Posts: 3,842
Likes: 230
From: SANTA CRUZ CA
Le Mans Master
Joined: Jul 2002
Posts: 5,818
Likes: 2
From: Alive and well in Burlington NC
Re: Pulling the codes (Lord Odin)
You can bend a paper clip to short the two points or I found a neat little tool at Autozone for about a dollar that has the proper length for shorting the AB and the AG connectors. Use the clip or add a small tool to the chest.
Melting Slicks
Joined: May 2001
Posts: 2,143
Likes: 7
From: San Diego CA
Re: Pulling the codes (Lord Odin)
Get a big paper clip and unfold it into a U-shape. Plug one leg of the clip into the proper holes. Then turn the ignition to on, but not start and get ready to write down the codes.
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Drifting
Joined: Jul 2002
Posts: 1,273
Likes: 0
From: Olathe, KS USA
Re: Pulling the codes (Lord Odin)
"A" is the Ground. I use a wire to jump the other ports to "A" upper right on ADL
"G" is the CCM port lower left on the ADL
Looks like some has posted a link with more info.
Install the jumper then turn on the ing.
:seeya
[Modified by C4Crazy787, 5:05 PM 4/15/2003]
[Modified by C4Crazy787, 5:08 PM 4/15/2003]
"G" is the CCM port lower left on the ADL
Looks like some has posted a link with more info.
Install the jumper then turn on the ing.
:seeya
[Modified by C4Crazy787, 5:05 PM 4/15/2003]
[Modified by C4Crazy787, 5:08 PM 4/15/2003]
Le Mans Master
Joined: Jul 2002
Posts: 5,818
Likes: 2
From: Alive and well in Burlington NC
Re: Pulling the codes (Lord Odin)
Make sure the ignition is off. Jump the connectors then turn the ignition to ON not START.
[Modified by Steel Blue 91, 5:12 PM 4/15/2003]
[Modified by Steel Blue 91, 5:12 PM 4/15/2003]
Drifting
Joined: Jul 2002
Posts: 1,273
Likes: 0
From: Olathe, KS USA
Re: Pulling the codes (CarAteMyMoney)
How do you pull codes on an 86 ABS system? :confused: also you seem to know your stuff, do you know where on the car the ECM grounds to?
I don't know about the 86 :(
[Modified by C4Crazy787, 5:28 PM 4/15/2003]
Le Mans Master
Joined: Jul 2002
Posts: 5,818
Likes: 2
From: Alive and well in Burlington NC
Re: Pulling the codes (C4Crazy787)
How do you pull codes on an 86 ABS system? :confused: also you seem to know your stuff, do you know where on the car the ECM grounds to?
I don't know much at all,.. it's all in my 92 GM service manual.
I don't know about the 86 :(
[Modified by C4Crazy787, 5:28 PM 4/15/2003]
I don't know much at all,.. it's all in my 92 GM service manual.
I don't know about the 86 :(
[Modified by C4Crazy787, 5:28 PM 4/15/2003]
I'm not sure about the 86 either.
Burning Brakes
Joined: Feb 2000
Posts: 824
Likes: 2
From: Camden SC
Re: Pulling the codes (Steel Blue 91)
First year for codes on ABS was 90.
GM/Kent Moore had a test set for 86-89. Trouble shooting pre 90 is somewhat problematic but can be done.
As always, buy a service manual.
dlmeyers 90 coupe zf6 3 speed shocks
GM/Kent Moore had a test set for 86-89. Trouble shooting pre 90 is somewhat problematic but can be done.
As always, buy a service manual.
dlmeyers 90 coupe zf6 3 speed shocks
Team Owner
Joined: Jan 2003
Posts: 20,254
Likes: 221
From: Summerland B.C. Canada
Re: Pulling the codes (Oldman)
:D Great link oldman!! Another page on the hard drive!! :cheers:
Pro
Joined: Aug 2001
Posts: 571
Likes: 0
From: Redmond WA
Re: Pulling the codes (AGENT 86)
"The 16 pin connector in the 1996 C4 is used for the much more complex OBD-II system and a scan tool is required to discover the OBD-II system's secrets."
So does this mean I'm hosed on pulling the codes on my car without a scantool? Has anyone else with OBDII pulled codes successfully?
Thanks,
Sam
[Modified by LT4Sam, 1:48 AM 4/24/2003]
So does this mean I'm hosed on pulling the codes on my car without a scantool? Has anyone else with OBDII pulled codes successfully?
Thanks,
Sam
[Modified by LT4Sam, 1:48 AM 4/24/2003]
Safety Car
Joined: Feb 2002
Posts: 4,212
Likes: 10
From: Sun City West Az
Re: Pulling the codes (Lord Odin)
As a "sidebar" to your original question, there can be code(s) stored in the ECM without the service light illuminated. They are "soft" codes that caused the ECM to turn the service engine lamp. However, the cause disappeared after 10 sec. and the lamp went off. (like a sensor went out of range for a second)....The code was stored and you may have missed the light as it went out after the 10 second timer.
[Modified by ittlfly, 7:08 AM 4/24/2003]
[Modified by ittlfly, 7:08 AM 4/24/2003]
