Conversions & Swaps LSX Engines in Non-LSX Vehicles
Sponsored by:
Sponsored by:

TCC/Brake Switch Signal - what does it do?

Thread Tools
 
Search this Thread
 
Old Mar 28, 2013 | 09:08 AM
  #1  
brandonppr's Avatar
Thread Starter
TECH Fanatic
20 Year Member
iTrader: (9)
 
Joined: Nov 2004
Posts: 1,690
Likes: 4
From: Tennessee
Default TCC/Brake Switch Signal - what does it do?

TCC/Brake Switch Signal

I cut this wire wile removing wires for race wiring. Does this affect anything besides cruise control. Is this wire needed for anything else? This is the only TCC wire I cut.

98 A4 4L60e

Last edited by brandonppr; Mar 28, 2013 at 09:13 AM.
Reply
Old Mar 28, 2013 | 09:30 AM
  #2  
allmotordustin's Avatar
Staging Lane
iTrader: (1)
 
Joined: Mar 2011
Posts: 66
Likes: 0
From: michigan
Default

yeah your torque converter wont lock up.
Reply
Old Mar 28, 2013 | 11:49 AM
  #3  
roninsonic's Avatar
TECH Enthusiast
10 Year Member
iTrader: (3)
 
Joined: Sep 2011
Posts: 584
Likes: 0
From: Mayport, FL
Default

Converter lockup.

To be more specific, the converter may not UNlock on decel... I'm not sure, don't have any wiring diagrams with me.
Reply
Old Mar 28, 2013 | 01:41 PM
  #4  
the_merv's Avatar
11 Second Club
Veteran: Air Force
20 Year Member
Loved
Community Favorite
iTrader: (88)
 
Joined: Mar 2006
Posts: 21,019
Likes: 893
From: The Beach...
Default

I'll be even more specific.


There are two Connectors on this Switch, that two-wire Connector on that Switch goes directly to the PCM. There is a PINK 12v IGN coming into it, and a BLU/BLK STRIPE wire coming out going to the Dash Connectors under the Passengers Kick Panel and eventually to the PCM. This is what UNLOCKS the Convertor when you hit the Brakes. If you have this cut, the Convertor will never lock, since the circuit is broken.

The Cruise Switch is a seperate Switch on the Pedal above this Switch.
Reply
Old Mar 28, 2013 | 02:10 PM
  #5  
roninsonic's Avatar
TECH Enthusiast
10 Year Member
iTrader: (3)
 
Joined: Sep 2011
Posts: 584
Likes: 0
From: Mayport, FL
Default

That's good info, merv! OP, say "thank you!"
Reply
Old Mar 28, 2013 | 04:52 PM
  #6  
brandonppr's Avatar
Thread Starter
TECH Fanatic
20 Year Member
iTrader: (9)
 
Joined: Nov 2004
Posts: 1,690
Likes: 4
From: Tennessee
Default

Originally Posted by the_merv
I'll be even more specific.


There are two Connectors on this Switch, that two-wire Connector on that Switch goes directly to the PCM. There is a PINK 12v IGN coming into it, and a BLU/BLK STRIPE wire coming out going to the Dash Connectors under the Passengers Kick Panel and eventually to the PCM. This is what UNLOCKS the Convertor when you hit the Brakes. If you have this cut, the Convertor will never lock, since the circuit is broken.

The Cruise Switch is a seperate Switch on the Pedal above this Switch.
Okay, so tell if this is correct: I need to plug that connector back in. this is the one that has 4 pins, but I only need to use the first or last 2 correct? one will go to ignition + and the other will go to the pcm where I cut it?
Reply
Old Mar 28, 2013 | 05:08 PM
  #7  
69 Ghost's Avatar
TECH Enthusiast
15 Year Member
 
Joined: Feb 2008
Posts: 503
Likes: 1
From: Ventura, Ca
Default

There is also the cruise control release if you are using a cruise control.
Reply
Old Mar 28, 2013 | 09:40 PM
  #8  
the_merv's Avatar
11 Second Club
Veteran: Air Force
20 Year Member
Loved
Community Favorite
iTrader: (88)
 
Joined: Mar 2006
Posts: 21,019
Likes: 893
From: The Beach...
Default

^^That is a seperate switch.


Originally Posted by brandonppr
Okay, so tell if this is correct: I need to plug that connector back in. this is the one that has 4 pins, but I only need to use the first or last 2 correct? one will go to ignition + and the other will go to the pcm where I cut it?
Post a pic of what you are talking about.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-4

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-5

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
Old Mar 31, 2013 | 10:37 AM
  #9  
brandonppr's Avatar
Thread Starter
TECH Fanatic
20 Year Member
iTrader: (9)
 
Joined: Nov 2004
Posts: 1,690
Likes: 4
From: Tennessee
Default

This is not my pic, but one I found. I only need the left two to be hooked up for lockup correct? One side to 12v and one side to the tcc brake wire. I don't care for cruise control or anything else. This car is race only.

Attached Thumbnails TCC/Brake Switch Signal - what does it do?-brake3.jpg  
Reply
Old Mar 31, 2013 | 09:51 PM
  #10  
the_merv's Avatar
11 Second Club
Veteran: Air Force
20 Year Member
Loved
Community Favorite
iTrader: (88)
 
Joined: Mar 2006
Posts: 21,019
Likes: 893
From: The Beach...
Default

If that's how the pic was labeled then yes, just them outer two.
Reply




All times are GMT -5. The time now is 12:34 AM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-4
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-5
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-6
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-7
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-8
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-9
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE