Help! Can't Find a TCS Code...
Thread Starter
Burning Brakes
Joined: Apr 2002
Posts: 1,016
Likes: 364
From: Dardenne Prairie Missouri
Help! Can't Find a TCS Code...
Ok I need some help from any of the forum Gurus. My Vette gave me a Traction Control System Failure Warning today so I checked the code and it turned out to be C1288 in the TCS module. I referenced that against the spreadsheet I have telling me all of the codes and it doesn't match with any. Can anyone help me decipher what is wrong with the TCS system?
Melting Slicks
Joined: Aug 2001
Posts: 3,040
Likes: 122
From: Wichita KS
Originally Posted by moncal90
Ok I need some help from any of the forum Gurus. My Vette gave me a Traction Control System Failure Warning today so I checked the code and it turned out to be C1288 in the TCS module. I referenced that against the spreadsheet I have telling me all of the codes and it doesn't match with any. Can anyone help me decipher what is wrong with the TCS system?
The Vehicle Stability Enhancement System (VSES) is activated by the ECBM when the calculated desired yaw rate (from your speed, steering wheel position, and lateral acceleration) and the actual yaw rate becomes too large.
The steering wheel position sensor supplies two inputs "Phase A" and "Phase B" to the EBCM. These two input signals are approximately 90 degrees out of phase. By interpreting the relationship between the two inputs the EBCM can determine the position of the steering wheel and the direction of the steering wheel rotation.
C1288 is set when:
- Both Phase A and Phase B are greater than 4.9 volts for 1.6 seconds.
or
- Both Phase A and Phase B are less than 0.2 volts for 1.6 seconds.
or
-The difference in changes in Phase A and Phase B is greater than 35.2 degrees for 9.76 milliseconds
To test the steering wheel position sensor it would be helpful to have a scan tool and a Service Manual.
Thread Starter
Burning Brakes
Joined: Apr 2002
Posts: 1,016
Likes: 364
From: Dardenne Prairie Missouri
Mapman, thanks for the information!! Where in the world did you find that info? I've got a list of the codes but apparently not a complete list. Now it's got me wondering what caused any of that to happen. I reset the code last night and drove it around and never could get it to reappear so I'll just have to keep my eye on it. If it continually happens I may have to take into the dealer.
Melting Slicks
Joined: Aug 2001
Posts: 3,040
Likes: 122
From: Wichita KS
Originally Posted by moncal90
Mapman, thanks for the information!! Where in the world did you find that info? .....
The manual also gives you a heads-up as to the dealers repair estimates. You can see what all is involved. I got mine from Fichtner, a Corvette Forum Sponsor.
http://temp.corvetteforum.net/c5/ken...rtspage1.shtml
