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ROYBUCK's avatar
ROYBUCK
Explorer
Dec 17, 2014

ABS Light

My ABS light stays on all the time, I just dropped it off a couple hrs ago at a heavy duty truck service center to get it checked , just received a call they could not get a connection I don't know if he meant he couldn't get any codes or what, told me I would need to take it to a dealer, does any one know what he is talking about, I will ask him tomorrow when I go to pick it up, in the mean time he is going to un-hook the battery and let it re-set it's self, the center has a good reputation they have worked on the MH before. Just thought I would ask on here to see if any one had any information. Thanks. Roy
Class A

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  • ROYBUCK's avatar
    ROYBUCK
    Explorer
    Dec 17, 2014
    I didn't have any luck with the ABS light, the guy at the truck center said you need to pull the wheel off to get to it, I don't think he wanted to fool with it, if it had of been a Freightliner chassis probably would have been fixed. Can any one tell me where the sensor is, I am limited to any repairs due to my Disability but if it is somewhere where I can reach it by being on a creeper I will give a try, I live in a place where repairs to a MH is none existing.

    Thanks
    Roy
  • Kidoo's avatar
    Kidoo
    Explorer
    Dec 17, 2014
    I had a sensor replaced and it fixed the problem. Just in case they are looking for the computor connector, my Monaco Cayman has a connector under the dash for the MH and one over the engine, you have to remove the room panel to get at this one.

    For the ABS, they have to connect to the one under the dash, driver side, might have to remove the under dash panel to see it.
  • johnsonbert's avatar
    johnsonbert
    Explorer
    Dec 17, 2014
    Our 01 Ambassador w/similar chassis did that on a regular basis. If the wheel bearings have worn a little allowing some slack, on a rough road, the wheel would wobble very slightly and push the sensor away. The remedy was to park and shut it off, go underneath and pull the sensor out a little and firmly push it back in. Start and drive for .5 miles plus and the light should go out if that was the difficulty. Once I had the wheel bearings re-torqued to 80+ ftlbs, did not have that trouble any more. This is only one of many possibilities however. Hope this may help, happy trails Bert
  • rgatijnet1's avatar
    rgatijnet1
    Explorer III
    Dec 17, 2014
    Each wheel sensor has only one wire with two contacts. Just disconnect the connector, which is usually within two feet of the sensor itself and measure the resistance of each wheel sensor with an ohmmeter. A good wheel sensor will read between 800 and 1200 ohms. A bad one will usually read either zero ohms or infinity, as in an open circuit.
  • Nomadac's avatar
    Nomadac
    Explorer
    Dec 17, 2014
    It depends on what ABS system you have. Mine takes special software to diagnosis what the problem is, wheel sensor, etc. Usually it is a bad sensor or connection, at least that was my problem.
  • bdpreece's avatar
    bdpreece
    Explorer II
    Dec 17, 2014
    Nowadays almost no service center will do anything without being able to pull computer codes. Any reasonable home-brew mechanic would pull and clean the sensors before doing anything else. A fairly quick and easy remedy in most cases.
  • enblethen's avatar
    enblethen
    Nomad
    Dec 17, 2014
    They do not have a code reader to see if any exists in the brake system.
    You could have a wheel sensor that has come unplugged.

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