Question about 2001 Buick Century

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Check Engine Light on Also Traction off Light on

Last winter I had problem with my left rear brake locking up. Found out the wheel cly was leaking. Replace wheel clys on both side and bleed brake system.
Now my lights are on and no trouble codes come up.

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  • Master
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It looks like the Body Control Module is what pulls the circuit to ground. There is a headlamp module (relay) in the under hood fuse box it only controls the low beam lights. It is relay #35 You could replace that and see if that takes care of your problem. If that does not do it then You would need to lean towards the BCM or a wiring issue...Is the car ot of warranty??

Posted on Sep 23, 2008

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  • Buick Master
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Have you rechecked the wheel speed sensor connections? You may have air still in the system, it takes a special tool to properly bleed an anti-lock system like yours.

Posted on Sep 23, 2008

  • yadayada
    yadayada Sep 23, 2008

    Also try disconnecting the battery for 1 hour, this will reset the system.

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1 Answer

Can leaky shocks on a 2006 Cadillac DTS cause the traction control light to come on


If the light is on there are DTC'S - diagnostic trouble code's stored in ABS - anti - lock brakes computer . Have codes checked first , something wrong with electrical part of antilock brakes , I know, what does ABS have to do with traction control ! traction control is a function of the ABS control module . Leaking shocks ? clarify , air shocks etc.... Before you start guessing , have it check for codes .
This vehicle is equipped with the TRW 440 V antilock braking system.
The vehicle is equipped with the following braking systems:
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Antilock Brake System (ABS)


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Engine Drag Control (EDC)


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Dynamic Rear Proportioning (DRP)


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Traction Control System (TCS)


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Vehicle Stability Enhancement System (VSES) (w/JL4)

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Electronic brake control module (EBCM)--The EBCM controls the system functions and detects failures.


?€¢
Electronic brake control module (EBCM)--The EBCM controls the system functions and detects failures.


The EBCM contains the following components:


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System relay--The system relay is energized when the ignition is ON and no ABS DTCs are present. It supplies battery positive voltage to the solenoid valves and pump motor.


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Vent tube--The vent tube, located in the EBCM connector, is an opening to the internal cavity of the EBCM. It allows ventilation of the EBCM internals.


?€¢
Brake pressure modulator valve (BPMV)--The BPMV contains the hydraulic valves and pump motor that are controlled electrically by the EBCM. The BPMV uses a 4 circuit configuration with a diagonal split. The BPMV directs fluid from the reservoir of the master cylinder to the left front and right rear wheels and fluid from the other reservoir to the right front and left rear wheels. The diagonal circuits are hydraulically isolated so that a leak or malfunction in one circuit will allow continued braking ability on the other.


Important: There is a rubber isolator located under the BPMV and on the mounting studs. The rubber isolators protect the BPMV and the EBCM from vehicle vibrations.


?€¢
The BPMV contains the following components:


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Pump motor


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Inlet valves (one per wheel)


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Outlet valves (one per wheel)


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Master cylinder isolation valves (one per drive wheel)


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Prime valves (one per drive wheel)


?€¢
Wheel speed sensors (WSS)--As the wheel spins, the wheel speed sensor produces an AC signal. The EBCM uses this AC signal to calculate wheel speed. The wheel speed sensors are replaceable only as part of the wheel hub and bearing assemblies.


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Traction control switch--The TCS is manually disabled or enabled using the traction control switch.


?€¢
Stoplamp switch--The EBCM uses the stoplamp switch as an indication that the brake pedal is applied.


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Lateral accelerometer sensor (w/JL4)--The EBCM uses the lateral accelerometer sensor as an indication of the lateral acceleration of the vehicle.


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Yaw rate sensor (w/JL4)--The EBCM uses the yaw rate sensor as an indication of the yaw rate of the vehicle.


?€¢
Steering wheel position sensor (SWPS) (w/JL4)--The EBCM uses the SWPS as an indication of the position and rotation of the steering wheel.


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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.

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In my 03 deville my traction control light is on an my 3rd brake light on the trunk not working


the rear brake light probably needs to have a new bulb. The traction control light on means traction system is off. There is a button I think on the dash or cosole that says TCS...try pushing the button and maybe that will turn light off. At hard throttle TSC keeps wheel from spinning
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The check trac control warning and track contr. light stays on while driving, is this brake pads?


It can be the pads. The wheel sensors count the revolutions of each wheel. On some rear drive differentials there is a sensor in the Differential that can go bad. But if the Brake pads are in pieces, the wheel sensors view can be blocked and the sensors lose count.

The Traction control will activate. Traction control can work in several ways. Some controls activate the rear brakes until both rear wheels are spinning the same RPM. This is destructive to the brake pads. Additional Traction control will cut the engine by choking it or interfering with the Ignition. When the rear wheels spin the same RPM, power is restored. This system is easier on the brakes.

The Emergency brakes are inside the rear Rotor if you have 4 wheel disc brakes. The sensors are in the Drum portion of the Rotors. A lot of Brake shops fail to check the E brakes because so much has to be disassembled. Your Mercury should have a Button on the dash to turn off the feature. Turn it off until you can have it checked.

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Traction control and anti-locks(ABS) lights come on.


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Can the EGR valve affect your rear wheel traction? My TOD check light is on and the rear wheel light. Autozone said it was the EGR. If I give a little too much gas, my rear wheels grab traction like I am...


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My 2000 Lincoln town car is jerking and my check traction light is coming on my car will stall out but i can start it back up


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The motor is suppose to lose rpm until the wheelspin is stopped. Then the motor is suppose to run normally. If the motor is completely dying you have a terrible problem with the sensor on the rear wheels.

The Traction control needs to be looked at, some Brake shops may be able to fix it. A dealer would have the tools. There should be nothing wrong with the engine, its suppose to react to the sensors.

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Abs light/traction control light


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TRACTION CONTROL.


that is what it is desgined to do - reduce acceleration and apply the brakes intermittently when the wheels spin. You have a switch you cn push to disable it. You need to disable each time you start car. See owner manual.

06-10: Traction Control 1996 Contour, Mystique Workshop Manual
DESCRIPTION AND OPERATION Traction Control System The optional traction control system is designed to control wheel spin when accelerating on slippery or loose surfaces. Traction control system is available only with anti-lock brakes. The traction control system includes the following components:
  • Hydraulic control unit.
  • Throttle control actuator (9N825).
  • Traction control switch.
  • Traction control warning indicator.
  • Front brake anti-lock sensor (2C204).
  • Rear brake anti-lock sensor (2C190).
The traction control system operates as follows:
  • System functions by transferring torque from the spinning wheel to the wheel with the most traction.
  • This is achieved by applying the brake at the spinning wheel through the hydraulic control unit or reducing the throttle opening.
  • Traction control braking and throttle control occur at vehicle speeds up to 50 km/h (30 mph).
  • At vehicle speeds above 50 km/h (30 mph), only throttle limiting control is used.
  • If speed control is operating when traction control system engages the traction control system will disengage speed control through the use of a speed control relay. This action is the same as applying the brake pedal with speed control engaged.
1996 contour
Traction Control Switch The traction control switch is located on the instrument panel, left of the steering column.

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