Question about 1999 Lincoln Navigator

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'99 Navigator - ABS Light on, I want to remove my wheel speed sensor to check it. I removed the screw,but the unit won't pull out. Also is there an electrical check I can do?

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ABS sensors are a funny thing once fitted they dont like to come back out, some also you have to turn to a certain point. and some have funny shaped ends thus you have to lift at one corner and then pull them out, be careful as they break very easy. I dont think you would be able to check it off the car.

Hope this helps

Regards

Dan

Posted on Jan 31, 2010

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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)
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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.

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

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    Go to Module Master. I had the same problem sent mine in and came back. took less then 5 minutes to R/R. www.modulemaster.com

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    durango.jpg 2008 Dodge Durango
    kh_dodge_location.gif Kelsey Hayes Dodge Location
    kh310_location.gif 1997 and earlier Durangos using the Kelsey Hayes 310
    kh125_location.gif
    Kelsey Hayes 125 controller for Dodge trucks with rear wheel ABS only

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