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Catina Posted on Mar 07, 2014
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I've had an engine brake booster replaced and front and back brakes replaced now my service traction control light illuminates when I decelerate the brakes

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1 Answer

Vinson Liu

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  • Expert 72 Answers
  • Posted on May 10, 2014
Vinson Liu
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Joined: Jun 30, 2013
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3 Related Answers

Anonymous

  • 1 Answer
  • Posted on Jan 16, 2009

SOURCE: anti-lock, traction control, service soon,brake,

Anti-Lock and Trac Off lights are lit on my 1999 Alero, as well. They usually come on after about 5 minutes of driving, but are not always on when I start the car.

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Anonymous

  • 651 Answers
  • Posted on Jul 01, 2009

SOURCE: brake light abs light traction control light all

you'll have to have it diagnosed at a repair shop to pinpoint the source. sorry, but thats how they make them. you could buy your own but it'll cost about 200$

Anonymous

  • 4669 Answers
  • Posted on Apr 21, 2010

SOURCE: warning light on are trac off, anti-lock, brakes, service engine

You need to have the abs system scanned for codes. You likely have a bad wheel speed sensor on one of wheels.

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1helpful
1answer

Where to find the traction control switch on a 2001 chevy cavalier

Doesn't have one ! The electronic brake control module turns it on an off when there is a problem ! Your light on ? DTC'S - diagnostic trouble codes stored .
Traction Off
The IPC illuminates the traction off indicator when the following occurs:
• The electronic brake control module (EBCM) inhibits the traction control system. The IPC receives a class 2 message from the EBCM requesting illumination. The traction control system is disabled when the following occurs:
- For Chevrolet only, the shift lever is in FIRST (1) or SECOND (2) gear. The EBCM receives a class 2 message from the powertrain control module (PCM) indicating the gear position.
- For Pontiac and Oldsmobile only, the body control module (BCM) detects that the traction control switch is pressed (signal circuit is low). The EBCM receives a class 2 message from the BCM indicating the switch status.
- The BCM detects that the park brake is engaged (signal circuit is low) and that the engine is on. The EBCM receives a class 2 message from the BCM indicating the park brake status.
- The PCM detects certain malfunctions and is unable to perform torque reduction requests from the EBCM. The EBCM receives a class 2 message from the PCM indicating that traction control cannot be performed.
• The EBCM detects a malfunction in the traction control system. The IPC receives class 2 messages from the EBCM requesting illumination of both the service vehicle soon and traction off indicators.
• The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds.
1helpful
1answer

07 pontiac g5, what does service traction, traction off. This light comes on. Car then dont want to idle, transmission shifts hard and jerks into gear. What does tht mean?

This is all electronically controlled by the PCM - engine computer an EBCM - electronic brake control module . An this will affect the transmission as well because everything is all hooked together electronically .
Engine Traction System Indicator
TRAC OFF
The instrument panel cluster (IPC) illuminates the TRAC OFF indicator when the electronic brake control module (EBCM) inhibits the Engine Traction System due to a malfunction in the Engine Traction System. The IPC receives a GMLAN message from the EBCM requesting illumination.
Your best bet is take it to a ASE certified repair shop or a GM dealer , Chevy , Buick , Cadillac . seeing how Pontiac isn't any more .
YoY
0helpful
2answers

I have a 2004 cavalier LS. While driving home from work this morning, my trac off light came on, and stayed on. Can you tell me what could possibly be the problem?

You need to take it to a repair shop that knows this system an has a diagnostic tool to scan for codes . These systems are very complex an your average person with out training should not attempt to fix it.
Traction Off The IPC illuminates the traction off indicator when the following occurs:
?€¢
The electronic brake control module (EBCM) inhibits the traction control system. The IPC receives a class 2 message from the EBCM requesting illumination. The traction control system is disabled when the following occurs:


-
For Chevrolet only, the shift lever is in FIRST (1) or SECOND (2) gear. The EBCM receives a class 2 message from the powertrain control module (PCM) indicating the gear position.


-
For Pontiac and Oldsmobile only, the body control module (BCM) detects that the traction control switch is pressed (signal circuit is low). The EBCM receives a class 2 message from the BCM indicating the switch status.


-
The BCM detects that the park brake is engaged (signal circuit is low) and that the engine is on. The EBCM receives a class 2 message from the BCM indicating the park brake status.


-
The PCM detects certain malfunctions and is unable to perform torque reduction requests from the EBCM. The EBCM receives a class 2 message from the PCM indicating that traction control cannot be performed.


?€¢
The EBCM detects a malfunction in the traction control system. The IPC receives class 2 messages from the EBCM requesting illumination of both the service vehicle soon and traction off indicators.


?€¢
The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds.


With the light lit there are DTC'S - diagnostic trouble codes stored in the EBCM -
TRAC OFF
Traction Off: Refer to ABS Description and Operation in Antilock Brake System

0helpful
1answer

Engine cuts out after a skid

traction control faulty. You slip and slide, your traction control activates, then here lies your problem.. after your traction control activates, it is creating an electrical short, vacuum leak, etc. look at what your traction control is operating, probably brakes. SO look at the brake booster vacuum lines or connecitons. Hope this at least gives you an idea of where to look. COuld be your traction control module is faulty.
0helpful
1answer

I have a 2000 Pontiac Grand Am and it recently started shutting off SPECIFICALLY when I'm braking or slowing down. The idling drops really low like 200-300 rpm then cuts off or sometimes it boosts...

simple test if you have a vacuum brake booster
put the hand brake on and start the engine
if it idles bad --possible vacuum leak from gaskets , vent controls sensor problems
if it idles fine , put the foot on the brake
if it idles bad now -- replace the brake booster
1helpful
1answer

When i brake on my 2003 supercrew, it sounds almost as if a horn is blowing. very annoying

Hello, You may have a bad brake booster, there can be a check valve in the feed line to the booster. You need to have a pressure check done on the brake booster. Be careful not to use any chemical which can dissolve rubber or plastic if you use a spray around the booster. A water spray may indicate a leaking booster if you test it with the engine running. The rpm will change from a leak.

The ABS system should show a "check light" if it is malfunctioning. The modulation inside the brake unit possibly could make noise.

The Traction control, if equipped, can activate a control valve in the intake system to limit engine RPM. When this system works, it shuts off intake air to slow down the engine when the system detects slippage in the rear wheels. If you have a toggle button on the dash to switch off the Traction control, turn the sytem off and try driving it and see if the noise goes away. Debris in the rear rotor "drum" brake could possibly blind a wheel sensor counting the revs and activate the Traction control

Idle speed control "motor" is a type of intake air control used to smooth out the engine. It operates in a air chamber and its the last thing I can think of that even remotely could make a noise.
3helpful
1answer

I need instrustion to install a brake switch

It is a generic Nissan brake light switch replacement procedure... the brake light switch on a Nissan Altima i.e. controls the illumination of the brake lights. Without the switch, the lights would not go on. The switch has no service life, so when it goes, it usually happens suddenly. New brake light switches can be obtained from Nissan or from a Nissan dealership.

1. Remove the cotter pin from the pin bolt that holds the brake pedal to the brake booster with a pair of pliers. There is a small cotter pin running through the brake pedal to brake booster connection. You need to pull this cotter pin out to remove the larger pin that holds the brake pedal to the brake booster.
2. Slide the pin out of the brake booster mounting bracket.
3. Pull up on the brake pedal to slide it out of the brake booster mounting bracket.
4. Remove the bolts holding the brake switch to the firewall using a socket wrench.
5. Remove the electrical connector on the brake switch by pulling it straight off the switch.
6. Slide the switch off the firewall.
7. Install the new switch. Installation is the reverse of removal. Make sure that you replace the cotter pin in the brake booster to brake pedal connection. The cotter pin prevents the retaining pin in the brake booster mounting bracket from coming off.

Hope helps (remember to rate this answer).
57helpful
4answers

What does the TCS Off button do?

TCS stands for Traction Control System.
The traction control system works in conjunction with your Antilock Brake System (ABS) and your Engine Control Module (ECM) or Powertrain Control Module (PCM) or Electronic Control Unit (ECU) (Note that ECM, ECU, and PCM all mean the computer that controls your engine, depending on make.)

Anyway, the traction control system can apply one or more of the brakes and control engine RPM in the event that a wheel slip has been detected by the traction control system.

Pushing the TCS button on most models will light a lamp in the instrument cluster that usually says "Trac Off" Pressing it a second time will turn this light back off.

When the "Trac Off" light is illuminated, the Traction Control System is disabled and will not work in the event of a wheel slip.

Also note that when the Traction Control System is working and a wheel slip is detected, The Traction Control Module will usually illuminate a light that says "Trac" as it is taking control of your brakes and engine. It can feel really strange when this occurs and some people think that their transmission is slipping or that their engine has a misfire problem.
The chances are that if it occurred on wet, slippery pavement, the Traction Control System may have just saved your life.

If this is happening on dry pavement and normal driving conditions (starting, stopping, or turning), there may be a problem with the system. "False Traction Control" can happen just like a bad wheel sensor causing "False Antilock Mode".

Also check your Owners Manual for more specific information pertaining to your particular vehicle.
0helpful
1answer

Problem with my cruise control and ABS light on 03 Explorer

Anti-Lock Control —Vehicles Built After 03/2002 The 3-channel anti-lock brake system consists of the following components:
  • front wheel speed sensors
  • front wheel speed sensor rings
  • hydraulic control unit (HCU)
  • Anti-lock brake control module (ECU)
  • rear wheel speed sensor
  • rear wheel speed sensor rings
  • yellow anti-lock brake warning indicator
The 4-channel anti-lock brake system with traction control and stability assist system consists of the following components:
  • active brake booster with integral solenoid
  • brake booster release switch
  • front wheel speed sensors
  • front wheel speed sensor rings
  • hydraulic control unit (HCU)
  • stability assist module (ECU)
  • stability assist event indicator
  • lateral accelerometer
  • longitudinal accelerometer (4x4)
  • rear wheel speed sensors
  • rear wheel speed sensor rings
  • steering wheel position sensor
  • yaw rate sensor
  • yellow anti-lock brake warning indicator
  • brake pressure transducer
  • traction control switch
---------------------------------------------------------------------
I suspect the abs issue is causing the speed control not to work if it happened at the same time the cruise control stopped working. When the yellow ABS light comes on, it means the ABS is dactivated. You may have a faulty accelerometer which senses acceleration and yaw (side to side lean). I have not seen a bad one but you said it is sensitive to acceleration.
I would unplug it and see what happens. The connector should have a small tab to depress so you can pull the connector out.
Here is where it is:

Accelerometer Removal and Installation
  1. NOTE: The accelerometer is located under the center, rear passenger seat carpet. (I think you have to remove seat for access).
    Cut the carpeting along the perforations.
  1. Disconnect the electrical connector.
  1. Remove the nuts and remove the accelerometer.
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Have dealer hook up tester and pull fault codes if you can't find an easy solution.
Some background info
  • A malfunction in the anti-lock brake system will cause the anti-lock brake control module to shut off or inhibit the system. However, normal power-assisted braking remains.
  • Malfunctions are indicated by the yellow ABS warning indicator in the instrument cluster.
  • The anti-lock brake system is self-monitoring. When the ignition switch is turned to the RUN position, the anti-lock brake control module will carry out a preliminary self-check on the anti-lock electrical system indicated by a three-second illumination of the yellow ABS warning indicator in the instrument cluster.
  • During vehicle operation, including normal and anti-lock braking, the anti-lock brake control module monitors all electrical anti-lock functions and some hydraulic operations.
  • Each time the vehicle is driven, as soon as vehicle speed reaches approximately 20 km/h (12mph), the anti-lock brake control module turns on the pump motor for approximately one-half second. At this time, a mechanical noise may be heard. This is a normal function of the self-check by the anti-lock brake control module.
  • Pedal pulsation coupled with noise while braking on loose gravel, bumps, wet or snowy roads is normal and indicates correct functioning of the anti-lock brake system.
  • Warning Lamp Indicator
    The anti-lock brake system (ABS) uses the yellow ABS warning indicator to alert the driver of a malfunctions in the ABS.
    The yellow ABS warning indicator will come on to warn the driver that the ABS has been turned off due to a symptom that exists in the ABS. Normal power assist braking remains but wheels can lock during a panic stop while the yellow ABS warning indicator is illuminated.

    -----------------------------------------
    Please report back, I am curious if that is what it is. Good luck
    8helpful
    9answers

    Lincoln ls year 2000 v8 3.9litres

    The traction control gets its information from the ABS system, so a faulty sensor reading will automatically shut down the traction control system.

    It is common in this vehicle for the sensor to malfunction!

    Brake system warning
    Momentarily illuminates when the
    ignition is turned to the START
    position. Also illuminates if the
    parking brake is engaged. If the
    brake warning lamp does not
    illuminate at these times, seek service immediately. Illumination after
    releasing the parking brake indicates low brake fluid level and the brake
    system should be inspected immediately.
    Anti-lock brake system (ABS)
    Momentarily illuminates when the
    ignition is turned to the ON
    position. If the light remains on,
    continues to flash or fails to
    illuminate, have the system serviced
    immediately. With the ABS light on, the anti-lock brake system is
    disabled and normal braking is still effective unless the brake warning
    light also remains illuminated with the parking brake released.

    Here is a link to your free owners manual with an explanation of all the lights and features of your car as well...

    http://safemanuals.com/user-guide-instructions-owner-manual/LINCOLN/TOWN%20CAR%202000-_E

    Click on the PDF user guide on the right side.
    Not finding what you are looking for?

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