Question about 1998 Mercury Sable

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My brake controle module stop working and think my master cylinde

My brake controle module stop working .so i replased it with one from the juck yard but still did not work so i got another one and it also did not work . so i got anotherone and no luck. im thinking something is causing my abs not to work properly. please help me i really dont have the mony to take it to a shop

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  • yadayada
    yadayada May 11, 2010

    I am sorry but the shop is in your future, and only a Ford or Merc shop will do, they are the only ones that have the electronic test equipment to get to the bottom of your issue, have you tested the system for codes?



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Actually depending on the OBD, you might get lucky and they will loan you a diagnostics tool at Advanced or Autozone, but then again you may have no choice but to go to the dealer, or someone who has the tool, brakes are nothing to fool around with if you have any doubt get it checked before you get into a serious accident!

Hope this helps

Posted on Dec 06, 2008


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Posted on Jan 02, 2017


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2007 chevy trailblazer code co131 brakes capliars locking up

DTC C0131 Antilock Brake System (ABS)/Traction Control System (TCS) Pressure Circuit

The master cylinder pressure sensor is located within the brake pressure modulator valve (BPMV). The master cylinder pressure sensor signal, to the electronic brake control module (EBCM), increases as hydraulic pressure in the front brake circuit increases.

Conditions for Setting the DTC co131
Any of the following conditions may cause the DTC to set.
• The EBCM detects open master cylinder pressure sensor circuitry.
• The EBCM detects shorted master cylinder pressure sensor circuitry.
• The master cylinder pressure sensor self-test, which occurs at power-up, fails.
• The zero-pressure signal voltage is not within an acceptable range.
• The master cylinder pressure is not within an expected tolerance based on deceleration rate and other data available to the EBCM.

Did you perform the Diagnostic System Check - Vehicle?
YES - Go to Step 2
NO - Go to Diagnostic System Check - Vehicle
Inspect the vehicle for the following and ensure that there is no base brake failure:
• Dragging brakes
• Faulty parking brake switch
• Brake fluid leakage
• Air in hydraulic system
• Seized brake calipers
• Swollen, kinked or otherwise damaged brake hoses
Did you find and correct the condition?
YES - Go to Step 9
NO - Go to Step 3
Drive the vehicle in order to verify that the brakes do not self-apply during turning maneuvers.
Do the brakes self-apply during turning maneuvers?
YES - Go to Symptoms - Hydraulic Brakes
NO - Go to Step 4
Use the scan tool to clear the DTCs.
Turn OFF the ignition for 5 seconds.
Turn ON the ignition.
Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Does the DTC reset?
YES - Go to Step 5
NO - Go to Diagnostic Aids
Select the vehicle stability enhancement system (VSES) Data Display function on the scan tool.
Observe the Brake Switch Status parameter while pressing and releasing the brake pedal.
Does the Brake Switch Status change while pressing and releasing the brake?
YES - Go to Step 6
NO - Go to DTC C0161
Remove the electronic brake control module (EBCM) from the vehicle. Refer to Control Module References .
Inspect the master cylinder pressure sensor connector within the EBCM for damage or corrosion.
Is there connector damage or corrosion present?
YES - Go to Step 8
NO - Go to Step 7
Important: Following EBCM replacement, perform the set-up procedure for the EBCM. Use the scan tool to perform the Tire Size Calibration procedure.
Replace the EBCM. Refer to Control Module References .
YES - Did you complete the replacement?
NO - Go to Step 9
Important: Following EBCM replacement, perform the set-up procedure for the EBCM. Use the scan tool to perform the Tire Size Calibration procedure.
Replace the EBCM and the brake pressure modulator valve (BPMV). Refer to Control Module References .
YES - Did you complete the replacements?
NO - Go to Step 9
Use the scan tool Clear All Class 2 DTCs function to clear all of the DTCs from all modules.
Turn OFF the ignition for 5 seconds.
Turn ON the ignition.
Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Does the DTC reset?
YES - Go to Step 2
NO - System OK

Mar 13, 2017 | Cars & Trucks

2 Answers

What is a abs modular on a Escalade Cadillac?

Jesse, The module will not stop fluid to rear brakes, a bad master cylinder will,leaking lines, air in brake system, faulty metering block if equipped, collapsed flex lines or pinched brake line faulty caliper or brake cylinders,etc. will cause the possible feeling of no rear brakes.
(ABS Module components) the ABS speed sensors and the ABS control module . When the brake is applied, the ABS control module reads the speed data from the speed sensor and sends the correct pressure to each wheel to prevent any wheel lock up, eg. sliding/skidding Links below have more info.
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

Service Stability System AND abs Pump issue

ABS Control Module Replacement Service Cost YourMechanic,2002,escalade,5.3l+v8,1431695,brake/wheel+hub,abs+control+module,1844

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3 Answers

2001 ford windstar lx master cylinder new i replaced but abs n brake light come on

Needs to have code reset for abs by a obd2 code reader with abs or find a parts house or shop that will reset it. Brake light coming on did you bleed the master cylinder out by connecting rubber lines to ths plastic insert ******* then acuating the master cylinder til all air is pumped out of master cylinder if that was not done then you will need to bleed all brakes until air is out of system that should turn brake light off

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2 Answers

I replaced the brake master cylinder on my 91 Lincoln Mark 7 with a non high pressure master cylinder and the rear brakes do not hold. Do I need to change the cal. on the rear also?

ANTI-LOCK BRAKE SYSTEM (and HCU-Hydraulic Control Unit)
General Information The 4-Wheel Anti-lock Brake System (ABS) is an electronically operated, all wheel brake control system. Major components include the power brake booster, master cylinder, the wheel speed sensors, and the Hydraulic Control Unit (HCU) which contains the control module, a relay, and the pressure control valves. The system is designed to ****** wheel lockup during periods of high wheel slip when braking. Retarding wheel lockup is accomplished by modulating fluid pressure to the wheel brake units. When the control module detects a variation in voltage across the wheel speed sensors, the ABS is activated. The control module opens and closes various valves located inside the HCU. These valves, called dump and isolation valves, modulate the hydraulic pressure to the wheels by applying and venting the pressure to the brake fluid circuits. Some models are equipped with a Traction Assist (TA) system. The TA system senses wheel spin upon acceleration, turns on the Hydraulic Control Unit (HCU) pump and applies fluid pressure to the appropriate rear wheel. Two additional isolation valves in the HCU will also close to permit fluid to flow only to the rear wheels. The TA system monitors TA usage to avoid overheating the rear brakes. If the system does sense brake overheating, the ABS module will inhibit TA operation until the rear brakes are permitted to cool down.
SYSTEM COMPONENTS The anti-lock brake system consists of the following components:
  • Vacuum booster and master cylinder assembly
  • Hydraulic Control Unit (HCU)
  • ABS module
  • Wheel sensors
  • Pedal travel switch
On 1992-1994 and 1995-00 a scanner is used to perform the brake bleed. But on yours, I think it's different according to the manual.
What do you mean change the cal. on the rear also? Do you mean Caliper?

Jul 26, 2010 | 1991 Lincoln Mark VII

1 Answer

Computer control module

look below the brake master cylinder. i think thats where thet still are.

Mar 24, 2010 | 2003 Mercury Grand Marquis

2 Answers

My windshield wipers will stop working and when you turn them on, there will be a buzzing noise somewhere under the dash or in front of the firewall

wiper motor is located drivers side firewall above master brake cylinder motor either binding or is starting to go have motor tested and check wiper armatures for binding

Oct 29, 2009 | 1997 Chevrolet K2500

2 Answers

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working on a similar problem myself , if vehicle equipped with rear anti lock brakes , look into the rabs module along the frame with all the lines going to it.. deposits have possibly gotten into the dump valve, have read tapping on it may revive it.

Sep 09, 2009 | Ford E-350 Cars & Trucks

3 Answers

!988 k1500 4x4 5.7l brakes

Bleed right rear,left rear, right front, left front in that order to be sure of good bleed but the brake booster makes it easy to push pedal. Make sure of no leaks from master cylinder. Otherwise brake hoses being soft will also hurt baking quickly.

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2 Answers

Jeep Cherokee 1989 brakes not working

abs module shouldn't keep the vehicle from stopping but the light will come on if there is a leak in the system you could simply disconnect the module to find out though I would check the master cylinder and calipers/wheel cylinders though look for leaks on the floor board (under the brake pedal) around the wheel make sure when you bleed the brakes you only add new brake fluid dot 3 or 4 any water or contamination can cause failure+abs light a bad booster/and/or/vacuum line will cause excessive pressure on the pedal but should still stop the vehicle. if the vehicle was ever wrecked there could be kinked lines but not likely

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1 Answer

2004 Chevy Surburban. The driver side mirror will not work using the switch on the door. Also the auto lock has stopped working. I think I have to remove the inside door panel to check the wiring.

On todays newer vehicles, the drivers side controls are contained within an electronic "control module". If only certain functions have stopped working, you are correct, the door panel will most probably have to come off. This will be followed by the removal of the master control module and a trip to your nearest GM dealership, salvage yard or other parts source to aquire a new module. I do not believe you will find a problem within your wireing.

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