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Thread: LMTV Abs troubleshooting

  1. #1
    Sergeant
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    Default LMTV Abs troubleshooting

    Hello

    I have a 2001 M1078A1 where the abs light stays on. Does anyone know how to troubleshoot the abs or read the abs codes ?

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    4 Star General Steel Soldiers Vendor Suprman's Avatar
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    On the c7 you might be able to read abs codes with a heavy truck reader. 3126 not sure there may be a separate diag port for it. The module by the air/hyd pump. I think there is a breaker for it in the panel.

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    4 Star General snowtrac nome's Avatar
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    I never had any abs issues on the trucks in Iraq. the system is about the same as commercial trucks you will need the wabco software and a code reader like a prolink than you can hool into the same dutch plug that is used for the engine or transmission.

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    One of my rear brake chambers is leaking air, could that trigger the abs light? I did a brake test but even with the abs light on it still works.

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    It shouldnt. It could just be a stored error that will self clear over time. There are wheel sensors that detect slip, some valves on the frame rail and the brain behind the cab.

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    When I disconnect my CTIS Controller the abs light go’s out. Switched to another CTIS controller and abs light stays off.

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