how does TCS work?

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Old Dec 7, 2003 | 11:08 PM
  #1  
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Racer
 
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From: sarasota:fl
Question how does TCS work?

I know it works because i was out in the snow for the last three days without any problems. just wanted know what is happening when TCS kicks in.
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Old Dec 8, 2003 | 01:30 PM
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scottt's Avatar
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From: Springfield, VA
You will see the TCS light on your dash flash, and you will probably hear ABS noises.

Best suggestion to make sure it's working, find a deserted, snowy place, come to a stop, and then floor it. You'll see TCS come to life.
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Old Dec 8, 2003 | 01:48 PM
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From: Glastonbury, CT
The TCS light also flashes when the system is actively retarding wheel spin. At the same time its flashing you will hear an odd buzzing sound.
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Old Dec 8, 2003 | 02:08 PM
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I think he's asking about the mechanicals involved behind the TCS.

There are wheel speed sensors, detecting the speed of each wheel. These sensors are all hooked up into a TCS computer that monitors everything and can decide whether or not to intervene when it detects wheel slippage. How does it do it? Let's say you gunned it off the line, spinning the front tires. The front tires would be turning faster than the rear wheels, and the computer would know that there's a difference in wheel speed front and rear. Then depending on model/mechanicals, it can either cut the power (fuel) or apply each individual brake. To be honest, I don't know which system our cars use. But I would bet on the latter.
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Old Dec 8, 2003 | 02:35 PM
  #5  
Racer
 
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From: Albany, New York
I believe it is both.
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Old Dec 8, 2003 | 04:30 PM
  #6  
Ianbiz3's Avatar
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i dont like it, its pretty pointless for our cars. the only good thing is it saves on the amount of rubber wasted when trying t b cool at skool
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Old Dec 8, 2003 | 04:39 PM
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the TL-P's TCS only works at low spd, up to 40km/h

if u don't like it, u can just turn it off
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Old Dec 8, 2003 | 04:57 PM
  #8  
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Racer
 
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From: sarasota:fl
Originally posted by Pure Adrenaline
I think he's asking about the mechanicals involved behind the TCS.

There are wheel speed sensors, detecting the speed of each wheel. These sensors are all hooked up into a TCS computer that monitors everything and can decide whether or not to intervene when it detects wheel slippage. How does it do it? Let's say you gunned it off the line, spinning the front tires. The front tires would be turning faster than the rear wheels, and the computer would know that there's a difference in wheel speed front and rear. Then depending on model/mechanicals, it can either cut the power (fuel) or apply each individual brake. To be honest, I don't know which system our cars use. But I would bet on the latter.
Thanks, that is what i wanted to know.
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Old Dec 9, 2003 | 08:40 PM
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Non S models use only the "Teves" type system which means that at lower speeds the anti-lock brakes are applied to slow the spinning wheel or wheels for maximun amount of traction. In slick conditions the TCS will give would give you best possible traction thats available at the tires. If you have an S model with VSA "vehicle stabilty assist" it also uses an overide throttle motor to limit what your feeding it with your right foot. The Vsa also has g-sensors and yaw sensors to help keep you between the ditches. Jeff
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Old Dec 9, 2003 | 09:42 PM
  #10  
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From: NNE of 716
TCS are only for low- speed loss of traction. VSA on Type-S combines TCS and ABS/ throttle input to add stabilty in cornering and prevent side-slip (yaw). TCS uses a 3-channel ABS sensor (1 for each front wheel and 1 for both rear) and VSA uses a 4-channel ABS (one per wheel) and both systems should be transparent to the driver except to give you a more stable ride.
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Old Dec 10, 2003 | 12:16 AM
  #11  
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Racer
 
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From: sarasota:fl
Originally posted by vicman17
TCS are only for low- speed loss of traction. VSA on Type-S combines TCS and ABS/ throttle input to add stabilty in cornering and prevent side-slip (yaw). TCS uses a 3-channel ABS sensor (1 for each front wheel and 1 for both rear) and VSA uses a 4-channel ABS (one per wheel) and both systems should be transparent to the driver except to give you a more stable ride.
thanks for the info!
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Old Dec 10, 2003 | 08:06 AM
  #12  
Dr. TLS
 
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From: ATL
Originally posted by livinglegend
Non S models use only the "Teves" type system which means that at lower speeds the anti-lock brakes are applied to slow the spinning wheel or wheels for maximun amount of traction. In slick conditions the TCS will give would give you best possible traction thats available at the tires. If you have an S model with VSA "vehicle stabilty assist" it also uses an overide throttle motor to limit what your feeding it with your right foot. The Vsa also has g-sensors and yaw sensors to help keep you between the ditches. Jeff
Very informative! I thought I knew how it all worked until now. Gotta hand it to you and the board for schooling the rest of us. THX.
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