CCM codes
Thread Starter
Intermediate
Joined: Jun 2012
Posts: 36
Likes: 0
From: Iowa
CCM codes
I have a 1991 Corvette, when i check the codes , by shorting out pins G and A I come up with the following codes for module 1. 31,32,33,34,35,36,37, and 38 . I can find nothing wrong with any on the instruments. Could someone tell me what i should be looking for. I have the manual so know what these codes are.
I have had the car stall a couple of times lately, could these codes indicate what the problem is ? As i understand it module 1 only has to do the the instruments.
Thanks
Mac
I have had the car stall a couple of times lately, could these codes indicate what the problem is ? As i understand it module 1 only has to do the the instruments.
Thanks
Mac
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
According to the info I have, you should be shorting pins A & B to read the codes in a '91:
http://forums.corvetteforum.com/1574918379-post18.html
http://corvettephotographs.com/c4vettes/codes.htm
My experience is that sometimes the ECM goes wacko and stores a bunch of codes that are not really valid. The way to find out is to reset the ECM and see what codes show up. Disconnect the ECM power connector for a second or so:
Not all cars have this connector. If your car does not then you'll have to disconnect the negative battery cable.
http://forums.corvetteforum.com/1574918379-post18.html
http://corvettephotographs.com/c4vettes/codes.htm
My experience is that sometimes the ECM goes wacko and stores a bunch of codes that are not really valid. The way to find out is to reset the ECM and see what codes show up. Disconnect the ECM power connector for a second or so:
Not all cars have this connector. If your car does not then you'll have to disconnect the negative battery cable.
Thread Starter
Intermediate
Joined: Jun 2012
Posts: 36
Likes: 0
From: Iowa
According to the info I have, you should be shorting pins A & B to read the codes in a '91:
http://forums.corvetteforum.com/1574918379-post18.html
http://corvettephotographs.com/c4vettes/codes.htm
My experience is that sometimes the ECM goes wacko and stores a bunch of codes that are not really valid. The way to find out is to reset the ECM and see what codes show up. Disconnect the ECM power connector for a second or so:
Not all cars have this connector. If your car does not then you'll have to disconnect the negative battery cable.
http://forums.corvetteforum.com/1574918379-post18.html
http://corvettephotographs.com/c4vettes/codes.htm
My experience is that sometimes the ECM goes wacko and stores a bunch of codes that are not really valid. The way to find out is to reset the ECM and see what codes show up. Disconnect the ECM power connector for a second or so:
Not all cars have this connector. If your car does not then you'll have to disconnect the negative battery cable.
I think I will just clear the codes and drive it and see if they show up again.
Thanks
Mac
Intermediate
Joined: May 2013
Posts: 26
Likes: 0
I agree with the A and B pin if you want to check codes on the ECM, however if you want to check codes on the CCM you need to short out A and G , when you do this you will get error codes from both systems. This only applys to 90-93.
I think I will just clear the codes and drive it and see if they show up again.
Thanks
Mac
I think I will just clear the codes and drive it and see if they show up again.
Thanks
Mac
How do I can erase the codes of EBTCM?
Where to I can buy the machine to scan the error codes CCM, ECM and EBTCM?
thanks
best regards
Thread Starter
Intermediate
Joined: Jun 2012
Posts: 36
Likes: 0
From: Iowa
You can purchase a scanner in almost any auto parts store , you just need to know what system you will be checking. OBD1 or OBD2
Mac
Intermediate
Joined: May 2013
Posts: 26
Likes: 0
Thread Starter
Intermediate
Joined: Jun 2012
Posts: 36
Likes: 0
From: Iowa
This site should answer your questions. On a 93 you do not need to buy a scanner as you have a built in one.
http://tech.corvettecentral.com/2011...trouble-codes/
Mac
http://tech.corvettecentral.com/2011...trouble-codes/
Mac
Intermediate
Joined: May 2013
Posts: 26
Likes: 0
This site should answer your questions. On a 93 you do not need to buy a scanner as you have a built in one.
http://tech.corvettecentral.com/2011...trouble-codes/
Mac
http://tech.corvettecentral.com/2011...trouble-codes/
Mac
I tried deleting the ABS codes and reappears H63 code.
otherwise, the ABS control unit is changed (new)
I need help, please-
thanks
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
2027 Corvette vs The World: Every Model vs Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!
Michael S. Palmer
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!
Joe Kucinski
Thread Starter
Intermediate
Joined: Jun 2012
Posts: 36
Likes: 0
From: Iowa
https://www.corvetteforum.com/forums...ming-back.html
Mac
Intermediate
Joined: May 2013
Posts: 26
Likes: 0
Not very familiar with abs codes. Here is a guy with the same problem. Maybe that will help. Read the last part of the thread.
https://www.corvetteforum.com/forums...ming-back.html
Mac
https://www.corvetteforum.com/forums...ming-back.html
Mac