Question about 1989 Jeep Cherokee

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Easy way to check and see if my brakes are ABS

Is there an easy way for me to check and see if my 1989 Jeep Cherokee has Anti-Lock Braking System (ABS)? Unfortunately, I cannot take my tire (wheel) off and check this. On my dashboard, there are boxes in the right hand side of my steering wheel. There are 5 boxes going down in a row. The first box lights up when the ignition is on and says "Brakes." The second box down (when lit up)says "Full time." The third box down doesn't light up at all so I don't know what and if it says anything at all. The fourth box (when lit up) says "Emission). The fifth box down doesn't light up so I don't know if something is there or not. Please help. Thanks in advance.

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ABS measures the speed of each wheel, when one locks up under breaking conditions the ECM will in layman terms pump the brakes for you by releasing and applying the brakes individually until the vehicle is stopped.
Look for a wire leading to the speed sensor near the brake calipers, if it is there then your vehicle is epuipped with ABS.
Or at about 45 jam on the brakes, if they are there and working the brakes will not lock up. If they lock up you either dont have them or they are inoperable. LOL

Looking for the sensor is the easiest way.

Posted on Nov 25, 2008

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Check for a wire leading to the front wheels and the rearend if it has a wire u have abs if not u dont

Posted on Oct 05, 2008

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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:
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  • hydraulic control unit (HCU)
  • Anti-lock brake control module (ECU)
  • rear wheel speed sensor
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The 4-channel anti-lock brake system with traction control and stability assist system consists of the following components:
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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.

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    Please report back, I am curious if that is what it is. Good luck

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