Question about 2001 Jeep Grand Cherokee

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ABS Light on a 2001 Grand Cherokee Laredo 4WD

My daughter "inherited" our 2001 Gr. Cherokee 2 years ago and is away at school. She tells me the ABS light is coming on. Don't have the owners manual as it resides with the car. Any hints on why this may be coming on or what to do with it? Thanks!

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  • miles1o Sep 22, 2008

    Do you have a recommendation for a reliable, reputable repair shop in the Muncie, Indiana area?

  • miles1o Sep 26, 2008

    Do you have a reliable and reputable repair shop in the Muncie, Indiana area?

  • miles1o Oct 04, 2008

    Thanks for a very well thought out response. Living away and not having very much succcess in keeping her car up I need all the help I can get. I'll have her take it into a dealer and get it looked at. Many thanks again!---miles1o

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Polo Jeep Suzuki Inc - polojeepsuzuki.com
2300 N Dr Martin L King Jr, Muncie - (765) 747-5115
Directions and more »

ABS Light on a 2001 Grand Cherokee Laredo 4WD - iconb.png Bill Gaddis Chrysler-Dodge-Jeep - www.billgaddischrylserdodge.com
1717 N. Wheeling Ave., Muncie - (765) 289-2361

Posted on Sep 26, 2008

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  • Todd Gale
    Todd Gale Sep 26, 2008

    ABS is the Anit-Lock Braking System, not something you should take care of lightly. This could be anything from a bad sensor to a bads master cylinder. I wiould have it looked at by the dealer since your daughter is obviously away from home.

  • Todd Gale
    Todd Gale Sep 26, 2008

    Oh yeah, a scan tool must be used to diagnose the ABS system.

  • Todd Gale
    Todd Gale Sep 26, 2008

    The purpose of the Anti-lock Brake System (ABS) is to prevent wheel lockup under braking conditions on virtually any type of road surface. Anti-lock braking is desirable because a vehicle that is stopped without locking the wheels retains Directional stability and some steering capability. This allows the driver to retain greater control of the vehicle during braking.



    ABS Braking

    ABS operation is available at all vehicle speeds above 3–5 mph. If a wheel locking tendency is detected during a brake application, the brake system enters the ABS mode. During ABS braking, hydraulic pressure in the four wheel circuits is modulated to prevent any wheel from locking. Each wheel circuit is designed with a set of electric solenoids to allow modulation, although for vehicle stability, both rear wheel solenoids receive the same electrical signal.

    Wheel lockup may be perceived at the very end of an ABS stop and is considered normal.

    During an ABS event, the Integrated Control Unit (ICU) regulates hydraulic pressure at all 4 of the vehicle’s wheels.



    The hydraulic pressure at each front wheel is controlled independently (relative to the amount of slip at each wheel) in order to maximize the braking force generated by the front brakes. The rear wheels are controlled such that the hydraulic pressure at either rear wheel does not exceed that of the highest slip rear wheel in order to maintain vehicle stability.



    The system can build and release pressure at each wheel, depending on signals generated by the Wheel Speed Sensors (WSS) at each wheel and received at the Anti-lock Brake Module (ABM).

  • Todd Gale
    Todd Gale Oct 03, 2008

    Please rate this solution.

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Connection problem.servicing needed.
thanks.

Posted on Sep 22, 2008

  • masterexpert Sep 22, 2008



    the problem is sure of the sensors so please

    Check the abs sensor on the rear axel first and then the sensors on the front wheels. All of the sensors are rather expensive to replace.



    feel free for further queries.

    thanks.

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