Traction Control Problem
08-01-2008, 09:34 PM
#1
Thread Starter
Join Date: Oct 2007
Location:
Posts: 39
Traction Control Problem
I own a '99 Cobra but thought this might not be a Cobra-specific issue. My traction control goes off and on by itself. I might start the car and the Traction Control Off light is on (as well as the ABS light) and after driving 10 mins it will go off. Sometimes the light comes on after driving a bit. Pushing the button does nothing.
I need to fix this issue before I sell the car. Anybody else ever had a similar issue? Couldn't find anything on the forum search.
Thanks!
I need to fix this issue before I sell the car. Anybody else ever had a similar issue? Couldn't find anything on the forum search.
Thanks!
08-01-2008, 09:59 PM
#3
1st Gear Member
Join Date: May 2007
Location: Rapid City, SD
Posts: 57
RE: Traction Control Problem
Might be a vehicle speed sensor. Your traction control and ABS run off your VSS to determine if your wheels are slipping or spinning. Should be able to run your codes and see if it pulls anything up.
08-01-2008, 11:41 PM
#5
TECH SAVANT
Join Date: Dec 2006
Location: Saint Augustine, FL
Posts: 10,938
RE: Traction Control Problem
The VSS signal is notusedby the ABS or traction control systems, only the four wheel speed sensors, from the shop manual:[/align]
[/ul]
CWP1979, you stated that the t/c LED might be on when you start the car, which indicatesthe t/c is off. Unlesst/c has been set to off in a tune the LEDshould always be off on startup. [/align][/align]Since the ABS isn't throwing a code I would suspect the t/c switch first; it is a normally open momentary contact push button switch, does it seem to function normally (push in and out properly) or does it seem mushy or sticky?[/align][/align]
[/align]The four wheel anti-lock brake system (4WABS) with traction control consists of the following components:
[*]anti-lock brake control module (2C346)[*]front anti-lock brake sensor (2C204)/(2C205)[*]front anti-lock brake sensor indicator (2C182)[*]hydraulic control unit (2C286)[*]powertrain control module (12A650)[*]rear anti-lock brake sensor (2C190)/(2C216)[*]rear anti-lock brake sensor indicator (2C189)[*]traction control switch[*]yellow anti-lock brake system (ABS) warning indicator
[*]anti-lock brake control module (2C346)[*]front anti-lock brake sensor (2C204)/(2C205)[*]front anti-lock brake sensor indicator (2C182)[*]hydraulic control unit (2C286)[*]powertrain control module (12A650)[*]rear anti-lock brake sensor (2C190)/(2C216)[*]rear anti-lock brake sensor indicator (2C189)[*]traction control switch[*]yellow anti-lock brake system (ABS) warning indicator
CWP1979, you stated that the t/c LED might be on when you start the car, which indicatesthe t/c is off. Unlesst/c has been set to off in a tune the LEDshould always be off on startup. [/align][/align]Since the ABS isn't throwing a code I would suspect the t/c switch first; it is a normally open momentary contact push button switch, does it seem to function normally (push in and out properly) or does it seem mushy or sticky?[/align][/align]
08-02-2008, 12:18 AM
#6
1st Gear Member
Join Date: May 2007
Location: Rapid City, SD
Posts: 57
RE: Traction Control Problem
ORIGINAL: cliffyk
The VSS signal is notusedby the ABS or traction control systems, only the four wheel speed sensors, from the shop manual:[/align]
[ul][/ul]
CWP1979, you stated that the t/c LED might be on when you start the car, which indicatesthe t/c is off. Unlesst/c has been set to off in a tune the LEDshould always be off on startup. [/align][/align]Since the ABS isn't throwing a code I would suspect the t/c switch first; it is a normally open momentary contact push button switch, does it seem to function normally (push in and out properly) or does it seem mushy or sticky?[/align][/align]
The VSS signal is notusedby the ABS or traction control systems, only the four wheel speed sensors, from the shop manual:[/align]
[/align]The four wheel anti-lock brake system (4WABS) with traction control consists of the following components:[*]anti-lock brake control module (2C346)[*]front anti-lock brake sensor (2C204)/(2C205)[*]front anti-lock brake sensor indicator (2C182)[*]hydraulic control unit (2C286)[*]powertrain control module (12A650)[*]rear anti-lock brake sensor (2C190)/(2C216)[*]rear anti-lock brake sensor indicator (2C189)[*]traction control switch[*]yellow anti-lock brake system (ABS) warning indicator
CWP1979, you stated that the t/c LED might be on when you start the car, which indicatesthe t/c is off. Unlesst/c has been set to off in a tune the LEDshould always be off on startup. [/align][/align]Since the ABS isn't throwing a code I would suspect the t/c switch first; it is a normally open momentary contact push button switch, does it seem to function normally (push in and out properly) or does it seem mushy or sticky?[/align][/align]
08-02-2008, 12:33 AM
#7
TECH SAVANT
Join Date: Dec 2006
Location: Saint Augustine, FL
Posts: 10,938
RE: Traction Control Problem
The VSS is mounted on the transmission rear extension housing,and driven by the transmission output shaft. In addition to providing a vehicle speed related signal to the instrument cluster its output is also used by the PCM as part of engine control calculations in closed loop mode.
08-02-2008, 07:58 AM
#8
Thread Starter
Join Date: Oct 2007
Location:
Posts: 39
RE: Traction Control Problem
ORIGINAL: cliffyk
The VSS signal is notusedby the ABS or traction control systems, only the four wheel speed sensors, from the shop manual:[/align]
[ul][/ul]
CWP1979, you stated that the t/c LED might be on when you start the car, which indicatesthe t/c is off. Unlesst/c has been set to off in a tune the LEDshould always be off on startup. [/align][/align]Since the ABS isn't throwing a code I would suspect the t/c switch first; it is a normally open momentary contact push button switch, does it seem to function normally (push in and out properly) or does it seem mushy or sticky?[/align][/align]
The VSS signal is notusedby the ABS or traction control systems, only the four wheel speed sensors, from the shop manual:[/align]
[/align]The four wheel anti-lock brake system (4WABS) with traction control consists of the following components:[*]anti-lock brake control module (2C346)[*]front anti-lock brake sensor (2C204)/(2C205)[*]front anti-lock brake sensor indicator (2C182)[*]hydraulic control unit (2C286)[*]powertrain control module (12A650)[*]rear anti-lock brake sensor (2C190)/(2C216)[*]rear anti-lock brake sensor indicator (2C189)[*]traction control switch[*]yellow anti-lock brake system (ABS) warning indicator
CWP1979, you stated that the t/c LED might be on when you start the car, which indicatesthe t/c is off. Unlesst/c has been set to off in a tune the LEDshould always be off on startup. [/align][/align]Since the ABS isn't throwing a code I would suspect the t/c switch first; it is a normally open momentary contact push button switch, does it seem to function normally (push in and out properly) or does it seem mushy or sticky?[/align][/align]
Thanks everybody for your input!
10-13-2008, 11:35 AM
#9
2nd Gear Member
Join Date: Sep 2008
Location: ATL
Posts: 171
The ABS light is on when the T/C Off light is lit. The button is not working even when the light is not lit. Prior to this past week the T/C worked properly and was on all the time unless the button was pressed. The button doesn't seem to press very smoothly - maybe it is just the switch? If it were the T/C switch, would the ABS light still come on when the T/C turned off?
Thanks everybody for your input!
Thanks everybody for your input!
sorry guys, my little ABS and trac light problem is pi$$ing me the f off. and i DO NOT want to take it to the stealership!
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