C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

ALDL pin out?

Thread Tools
 
Search this Thread
 
Old Apr 7, 2005 | 01:54 AM
  #1  
articwhite90's Avatar
articwhite90
Thread Starter
Intermediate
 
Joined: Jul 2003
Posts: 25
Likes: 0
From: savannah Ga
Default ALDL pin out?

I have searched for this but have yet to find it. Does anyone know what the pin out is for the OBDI 12pin ALDL. I know A=GND, B=Diag, and M=Data.

Thanks
Reply
Old Apr 7, 2005 | 02:52 PM
  #2  
67fso's Avatar
67fso
Heel & Toe
10 Year Member
 
Joined: Nov 2003
Posts: 22
Likes: 0
From: Manhattan Beach Ca
Default

You can check out some of the picts and links to pinout diagrams at the bottom of the home page at:
http://www.aldlcable.com

This site also has quite a bit of information and links to the software packages available, and it explains the circuits used to make ALDL cables.
Reply
Old Apr 7, 2005 | 06:17 PM
  #3  
Blower91's Avatar
Blower91
Instructor
 
Joined: Aug 2004
Posts: 108
Likes: 0
Default

What year are you interested in? It seems there has been some changes over the years. My 92 service manual says

A - ground
B - ECM diagnostic/LTPW diagnostic
C - Ride control diagnostic
F - TCC (vin P)
G - CCM diagnostic
H - Antilock brake
J - E & C bus data
K - SIR diagnostic
L - SIR serial data
M - serial data (ECM, antilock brake, CCM, heater/AC)

Hope this is of any help!
Reply
Old Apr 8, 2005 | 10:07 AM
  #4  
articwhite90's Avatar
articwhite90
Thread Starter
Intermediate
 
Joined: Jul 2003
Posts: 25
Likes: 0
From: savannah Ga
Default

Blower91,

Its a 1990. What you listed looks right. I need to breakdown and buy a manual. It's just hard to shell out $100 for a book. How can data be pulled from the other pins?

Thanks for your reply.
Reply
Old Apr 8, 2005 | 05:00 PM
  #5  
Blower91's Avatar
Blower91
Instructor
 
Joined: Aug 2004
Posts: 108
Likes: 0
Default

Originally Posted by articwhite90
Blower91,

Its a 1990. What you listed looks right. I need to breakdown and buy a manual. It's just hard to shell out $100 for a book. How can data be pulled from the other pins?
Ground pin G (G to A) and turn the ignition on. Then the CCM will enter diagnostic mode. It displays fault codes (in speedometer) for the CCM (module1), ECM (module4) and the EBCM (module9). End of list is indicated by "---".

Eg Datamaster uses pin M to retrieve data from the ECM. Haven't played around much with the other pins, perhaps someone else out there knows more about them.
Reply

Get notified of new replies

To ALDL pin out?





All times are GMT -4. The time now is 11:09 PM.

story-0
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-1
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-2
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-3
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-4
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-5
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-6
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-7
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE
story-8
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

Slideshow: Breaking down the 2027 Grand Sport, Grand Sport X, Stingray, and LS6 V8.

By Michael S. Palmer | 2026-03-26 13:48:45


VIEW MORE
story-9
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

Slideshow: 5 reasons bad drivers crash sports cars & 5 ways to avoid a costly shame!

By Joe Kucinski | 2026-03-25 16:32:55


VIEW MORE