Problem with TCS
Thread Starter
Instructor
Joined: Oct 2006
Posts: 124
Likes: 0
Problem with TCS
I have quite a few codes coming up on my 2000 coupe. It want allow me to reset these codes from the DIC. Here's what I have, C1261,C1263,C1265,C1267,C1271,C1273,C128 2,C1283,C1284,C1285,C1288 and C1296. All of the codes has HC behind them.Can reset 5 of the 12 codes leaving me with 7 that want go away. Then there's the BO-RFA with U1096H, U1064H and U1016H. The TCS has a total of twevle codes and I can reset only seven. All the BO-RFA codes can be reset.
I'm just wondering whether I need the BPMV or EBCM. Worst case situation is that I need both components. Need help to get the lights on the DIC off.
I'm just wondering whether I need the BPMV or EBCM. Worst case situation is that I need both components. Need help to get the lights on the DIC off.
Last edited by jazzvette; Feb 11, 2009 at 03:05 PM. Reason: adding lines
Tech Contributor
Joined: Oct 1999
Posts: 41,058
Likes: 9,819
From: Charlotte, NC (formerly Endicott, NY)
You have a lot of codes that most people don't usually see. It may take a little while to work through them without some of GM's tools. However, several of the codes are related to the solenoid circuits in the EBCM and BPMV. First, have you checked fuse #53 in the underhood electrical center? Second, remove the EBCM from the BPMV and check the connection between the two to see if there is any brake fluid in the connection. Also, check to see if the contacts are corrosion free.
Bill
Bill
Last edited by Bill Dearborn; Feb 11, 2009 at 03:50 PM.
Tech Contributor
Joined: Jan 2007
Posts: 19,456
Likes: 1,165
From: Dyer, IN
You have a lot of codes that most people don't usually see. It may take a little while to work through them without some of GM's tools. However, several of the codes are related to the solenoid circuits in the EBCM and BPMV. First, have you checked fuse #53 in the underhood electrical center? Second, remove the EBCM from the BPMV and check the connection between the two to see if there is any brake fluid in the connection. Also, check to see if the contacts are corrosion free.
Bill
Bill
I agree, that's a pretty serious meltdown...even though no C1214....
Team Owner
Joined: Mar 2002
Posts: 24,160
Likes: 78
Did these all come on suddenly? It's unlikely that all those components failed at once. So I'd check your grounds first especially those 2 splice packs near the headlights. Don't just look at the lug either, you have to pull apart the plastic box. Also pull the harness out of the EBCM, hit it with some electrical contact cleaner, and jack it back it in.
Your other clump of codes has to do with the steering and yaw sensors. I wonder, does the steering circuit draw power from the ignition switch? Those love to carbonize up and lose conductivity. I just cleaned mine. The contacts were black as tar.
Your other clump of codes has to do with the steering and yaw sensors. I wonder, does the steering circuit draw power from the ignition switch? Those love to carbonize up and lose conductivity. I just cleaned mine. The contacts were black as tar.
Tech Contributor
Joined: Oct 1999
Posts: 41,058
Likes: 9,819
From: Charlotte, NC (formerly Endicott, NY)
Checking grounds (especially G108 under the battery) is another thing to do. A voltage problem (caused by bad contacts or bad grounds) can cause a lot of these issues. However, the diagnostics for the first 6 codes all call for inspection of the connector between the EBCM and BPMV for brake fluid. If brake fluid is in that connector it means the BPMV is leaking and it could also mean the EBCM electronics have been penetrated by brake fluid thus causing other failures in the EBCM. The diagnostics clearly state to replace both the EBCM and BPMV if brake fluid is found in that connector. Clearly, something that needs to be up high on the list of things to check.
Bill
Bill
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Thread Starter
Instructor
Joined: Oct 2006
Posts: 124
Likes: 0
I have looked at the EBCM on many occassions. I'm going to go into the BPMV again and look at it. I was going to send the EBCM to ABS fixer but they only repair 01 - 04 models. When I tried to remove the EBCM I couldn't get it out. Removed the three nuts just wouldn't come off. That is when I got all the codes by attempting to remove it. The only code I was getting before that was 1243 and I was able to reset it.
Tech Contributor
Joined: Oct 1999
Posts: 41,058
Likes: 9,819
From: Charlotte, NC (formerly Endicott, NY)
It sure looks like you are going to have to get the EBCM off the BPMV. Either to get it repaired or to check what is going on with the solenoid connections between the two. Even with C1243 one of the causes could be brake fluid between the two units. That would require replacement of both.
Bill
Bill