VSA Explained
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Joined: May 2001
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VSA Explained
For those of you who were wondering what exactly VSA does here is what I found out.
Oversteer correction by applying breaks to outside front wheel. When the yaw sensors detect rear end of the car slipping out, the VSA applies breaks to one of the front wheels (the outside one) to counter the spin out. Break force on the outside front wheel helps keep car track the turn.
Understeer correction during acceleration by applying breaks to inside front wheel and reducing engine speed by cutting fuel. Break forcee on inside wheel helps the car make the turn while car is not allowed to accelerate further.
VSA does nothing to the real wheels. VSA should work at any speed.
Some people were wondering what TCS does. TCS works only during low speed to prevent one of the two drive wheels from spin out. It applies breaks to spinning wheel and cuts fuel to slow down the engine. TCS is mainly for take offs in snow, mud, and other slippery surface.
Oversteer correction by applying breaks to outside front wheel. When the yaw sensors detect rear end of the car slipping out, the VSA applies breaks to one of the front wheels (the outside one) to counter the spin out. Break force on the outside front wheel helps keep car track the turn.
Understeer correction during acceleration by applying breaks to inside front wheel and reducing engine speed by cutting fuel. Break forcee on inside wheel helps the car make the turn while car is not allowed to accelerate further.
VSA does nothing to the real wheels. VSA should work at any speed.
Some people were wondering what TCS does. TCS works only during low speed to prevent one of the two drive wheels from spin out. It applies breaks to spinning wheel and cuts fuel to slow down the engine. TCS is mainly for take offs in snow, mud, and other slippery surface.
Drifting
Joined: May 2001
Posts: 2,626
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From: Kansas City, KS, USA
Originally posted by happy:
Some people were wondering what TCS does. TCS works only during low speed to prevent one of the two drive wheels from spin out. It applies breaks to spinning wheel and cuts fuel to slow down the engine. TCS is mainly for take offs in snow, mud, and other slippery surface.
Some people were wondering what TCS does. TCS works only during low speed to prevent one of the two drive wheels from spin out. It applies breaks to spinning wheel and cuts fuel to slow down the engine. TCS is mainly for take offs in snow, mud, and other slippery surface.
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Joined: May 2001
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Originally posted by daverman:
Whoops! TCS does not cut fuel flow. It only applies brakes (not "breaks")
Whoops! TCS does not cut fuel flow. It only applies brakes (not "breaks"
)
Drifting
Joined: Nov 2000
Posts: 3,277
Likes: 9
From: Toronto Ont Canada
But the TL-P and 99-01 TL only got TCS, which is just garbage...
I have to say that VSA, ESP, or the DSC are basically the same. Same concept! There difference is the name and the amount of money and time spended for R&D. The theory behind them are the same. But how good are the sensors or is the software well writen are where you see the difference.
I have to say that VSA, ESP, or the DSC are basically the same. Same concept! There difference is the name and the amount of money and time spended for R&D. The theory behind them are the same. But how good are the sensors or is the software well writen are where you see the difference.
Drifting
Joined: May 2001
Posts: 2,626
Likes: 0
From: Kansas City, KS, USA
Originally posted by happy:
Perhaps on older Tl models. But 2002 service manual states "...which applies brake pressure to slow the spinning wheel. At that time, the VSA control unit sends a traction control signal to reduce engine power." So TLs that have VSA as well as TCS will reduce engine power when a drive wheel starts to spin.
Perhaps on older Tl models. But 2002 service manual states "...which applies brake pressure to slow the spinning wheel. At that time, the VSA control unit sends a traction control signal to reduce engine power." So TLs that have VSA as well as TCS will reduce engine power when a drive wheel starts to spin.
Yeh, they're all just marketing monikers.
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