Question about 1999 Jeep Cherokee

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Disconnect anti lock brake system - 1999 Jeep Cherokee

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  • Jeep Master
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What does that mean.?
1: im hacking my car, ? and ... or WHEELING? off ROAD?
2: im doing a special test of some kind and what????????
3: or????
just a clue as to why and final goal, would greatly help
btw, if you remove ABS fuses, it goes to manual brakes on some cars.
but the FSM shows all that , read the FSM.

http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service

Posted on Feb 13, 2014

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Posted on Jan 02, 2017

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What is anti-lock braking system on cars?


Anti-Lock Brake systems are all essentially the same they will prevent the driver form applying 100% Brake pressure and locking up the wheels while driving. The ratchet the pressure more slowly to prevent the car from skidding. Our first reaction in an emergency is to slam on the brakes and that is 90% of the time not the right action. So Anti-Lock brakes are designed to prevent this unwanted skid.

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2004 e320 just replaced the front and rear brakes and now I get the ESP malfunction visit shop.


MERCEDES BENZ DEALERSHIP HAS TO REPROGRAM THE ANTI LOCK BRAKE SYSTEM AND ELECTRONIC STABILITY CONTROL SYSTEM.IF YOU DISCONNECT BRAKE PAD WEAR SENSORS WHEN REPLACING BRAKE PADS. THE ABS BRAKES AND ESP SYSTEM HAS TO BE RESET TO TURN OFF ESP LIGHT.

Aug 14, 2011 | 2001 Mercedes-Benz C-Class

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(!) with a squiggly line in-between 2008 dodge caravan


Sounds like a brake light. Check your brake fluid and fill to the correct level if low then see if it goes out.

The Brake light says "BRAKE" is the Brake System Warning Light: "This light monitors various brake functions, including brake fluid level and parking brake application. If the brake light turns on, it may indicate that the parking brake is applied, that the brake fluid level is low, or that there is a problem with the anti-lock brake system (if equipped)."

Another is the Anti-Lock Brake System Light: "This light monitors the Anti-Lock Brake System. The light will turn on when the ignition switch is turned to the ON position and may stay on for as long as four seconds. If the ABS light remains on or turns on while driving, it indicates that the Anti-Lock portion of the brake system is not functioning and that service is required. However, the conventional brake system will continue to operate normally if the BRAKE warning light is not on."

It could also be the Tire Pressure Monitoring light. Check the brake fluid first and see if that fixes it.

Mar 23, 2011 | 2007 Dodge Caravan SXT Minivan New Cars

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What causes anti lock brake fuse light to stay on?


ANTI LOCK BRAKE LIGHT.MEANS ANTI LOCK BRAKES NOT WORKING.CHECK ABS FUSE AND RELAY.IF ALL IS GOOD.HAVE THE ABS BRAKE SYSTEM CODE SCAN.NOT SAFE TO KEEP DRIVING.HAVE FIX QUICK AS POSSIBLE.BECAUSE THE ABS BRAKE UNIT IS PART OF YOUR MAIN BRAKING SYSTEM.IF ABS BRAKE UNIT BAD BY BEING PART OF THE MASTERCYLINDER IT CAN CAUSE COMPLETE BRAKE FAILURE.

Oct 02, 2010 | 1996 Ford Taurus

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I have a 2002 Lincoln ls . How do I replace the abs speed sensor? Right front tire?


you have one on the inside of each wheel.
SECTION 206-09A: Anti-Lock Control 2002 Lincoln LS Workshop Manual
REMOVAL AND INSTALLATION Front Wheel Speed Sensor
Material Item Specification RTV Silicone Sealant
FSTZ-19G204-AB (Canada CXC-114A) NAVSTR Sealer
Removal and Installation
  1. Raise and support the vehicle. For additional information, refer to Section 100-02 .
  1. Position the inner splash shield aside.
    1. Remove the pin-type retainers.
    1. Position the inner splash shield aside.
  1. Disconnect the anti-lock brake sensor electrical connector.
  1. Remove the anti-lock brake sensor harness from the brake hose clips.
  1. Remove the anti-lock brake sensor.
    1. Remove the anti-lock brake sensor clip.
    1. Remove the anti-lock brake sensor.
  1. NOTE: Make sure the anti-lock brake sensor is fully seated before installation of the new clip.
    To install, reverse the removal procedure.
    • Apply a 2.5 mm (0.1 in) bead of silicone sealant to the outside diameter of the anti-lock brake sensor.
-------------------------------------------------------------------------
Rear Wheel Speed Sensor Removal and Installation
  1. Raise and support the vehicle. For additional information, refer to Section 100-02 .
  1. Disconnect the rear anti-lock brake sensor electrical connector.
  1. Remove the rear anti-lock brake sensor harness from the control arm clips.
  1. NOTE: Clean off dirt and foreign material that may have collected around the rear anti-lock brake sensor before removal.
    Remove the rear anti-lock brake sensor.
    1. Remove the anti-lock brake sensor bolt.
    1. Remove the anti-lock brake sensor.
  1. To install, reverse the removal procedure.

Feb 24, 2010 | 2001 Lincoln LS

1 Answer

ABS brake module sounds like a motor running and won't stop unless battery is disconnected. what is fix?


I would pull the fuse for the ABS hydraulic pump and then put it back in and see what happens. Don't ever recall a pump running. Dealer may need to hook up scan tool for diagnostic fault codes, DTCs.



Principles of Operation
The ABS control module receives wheel speed readings from both front wheel speed sensors and the rear differential speed sensor, and processes this information to determine if an ABS event is necessary. The wheel speed sensor electrically senses each tooth of the ABS sensor indicators as it passes through the wheel speed sensor's magnetic field.
The ABS control module continuously monitors and compares the rotational speed of each wheel speed sensor indicator and, when it detects an impending wheel lock, modulates brake pressure to the appropriate brake caliper(s). This is accomplished by triggering the hydraulic control unit (HCU) to open and close the appropriate solenoid valves. Once the affected wheel returns to normal speed, the ABS control module returns the solenoid valves to their normal position, and normal (base) braking resumes.
The ABS control module is self-monitoring. When the ignition switch is turned to the RUN position, the ABS control module will do a preliminary electrical check, and at approximately 20 km/h (12 mph), the pump motor is turned on for approximately one-half second. Any malfunction of the ABS system will cause the ABS to shut off; normal power assisted braking, however, remains.
Inspection and Verification — Scan Tool Communications Check
  1. Verify the customer concern by carrying out the Drive Cycle Test.
  1. Visually inspect for obvious signs of mechanical and electrical damage.


Visual Inspection Chart Mechanical Electrical
  • Parking brake cable
  • Tire pressure
  • Tire size or mismatched tires
  • Blown fuse
  • Central junction box (CJB):
    • fuse 23 (10A)
  • Battery junction box
    • fuse 102 (50A)
  • Connectors or connections
  • Ground integrity
  • Harness routing
  • Wire chafing
  • Circuitry open/shorted

-----------------------------------------------------------------------
Anti-Lock Control The four-wheel anti-lock brake system (4WABS) consists of the following components:
  • Anti-lock brake control module (2C265)
  • Front anti-lock brake sensor (2C204)
  • Front anti-lock brake sensor indicator (2C182)
  • Hydraulic control unit (2C219)
  • Rear anti-lock brake sensor (2C190)
  • Rear anti-lock brake sensor indicator (2C189)
  • Yellow ABS warning indicator

May 07, 2009 | 2000 Ford Expedition

1 Answer

Mercedes benz antilock brakes


Hi!
You dont have to disconnect the ABS system to replace brake pads on your vehicle, definatly. Dont forget to pump brake pressure up once your finished
Goodluck!
Carlo@ss

Apr 09, 2009 | 2003 Mercedes-Benz C-Class

1 Answer

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

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    well looks like one of the sensors are bad i havent priced audi but i know certain parts are pricey be careful cause now brakes are standard and will lock if braking hard

    Jul 21, 2008 | 1985 Audi 5000 S

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