Important Abs,Traction Problem.
Thread Starter
4th Gear
Joined: Mar 2006
Posts: 4
Likes: 0
Important Abs,Traction Problem.
I have a 2000 European Corvette C5, Last Month When I Start The Engine and go on my road,3 message appear on DIC (Tractıon Servıce,Abs Service Act.Handlıng Service) I Stopped The engine and start again When the mph comes 10 The messages comes again,ın servıce we connect the tech 2 to the car,c1225 left front excessive wheel speed variation and left front wheel speed sensor circuit open or shorted message comes. we change the ebcm and the front left wheel bearıng but the message appear again,the voltage of the front left wheel ıs 38.45 ohm but the other 3 wheel`s voltage ıs 48ohm,we clean all the ground and the connectors there ıs no problem,but we cant solve the problem what can we do to solve that?
Sıncerely.
Can and Mecit
Sıncerely.
Can and Mecit
Racer
Joined: Aug 2005
Posts: 388
Likes: 6
The most likely problem are the female connectors at each end of the wheel speed sensor harness.
In the picture I took you will see a good contact and a bad contact
http://www.badongo.com/pic.php?file=..._connector.JPG
In the picture I took you will see a good contact and a bad contact
http://www.badongo.com/pic.php?file=..._connector.JPG
Last edited by cliff_ford; Mar 12, 2006 at 08:48 AM.
Melting Slicks
Joined: May 2005
Posts: 3,461
Likes: 161
From: Las Vegas Nevada
St. Jude Donor '08
Almost certainly your connectors and/or grounds. They need to be cleaned up. Had the same problem, did the clean up and BINGO, problem solved. Here is one of the best posts on the forum for this problem.
http://forums.corvetteforum.com/show...875&forum_id=1
Thanks,
Clayton from Las Vegas
http://forums.corvetteforum.com/show...875&forum_id=1
Thanks,
Clayton from Las Vegas
c1232 Left Front Wheel Speed Sensor Circuit Open Or Shorted.......
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
You need to do a "PIN PULL" test on all of the female pins in the EBTC system wiring harness. Obtain a male pin that is the same physical size as the one in the male side of the connector. Insert it in the female pin and see if the mechanical grip on the male pin is satisfactory. There should be a good firm grip on the male pin. There are TWO grounds that are part of the EBTCM wiring system. Chassis ground G-101 Front drivers side frame rail and G-104/108 which is on the passengers frame rail near the battery. Follow the "small" black wire on the negative battery cable down to the frame. That will be G-104/108.
The voltages the are generated by the wheel speed sensors are very small AC voltages. When the car is going slow, they will be measured in Millivolts. The male/female connections in the wiring harnesses need to be perfect or you will get faults.
If you remove the main connector from the EBTCM, you chould be able to read the exact same resistance readings and voltage readings that you have at each wheel sensor.
Bill Curlee
The voltages the are generated by the wheel speed sensors are very small AC voltages. When the car is going slow, they will be measured in Millivolts. The male/female connections in the wiring harnesses need to be perfect or you will get faults.
If you remove the main connector from the EBTCM, you chould be able to read the exact same resistance readings and voltage readings that you have at each wheel sensor.
Bill Curlee
