Volvo VNL 780 Displays: HSA, ABS, TCS

Discussion in 'Volvo Forum' started by MichaelK1, Feb 26, 2021.

  1. rlsmith631969

    rlsmith631969 Bobtail Member

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    May 7, 2020
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    I have the same issue. Yes I have an I-shift. The service manager at the dealer I go to says it's a bad ground. In your experience is that what you've found to be the problem?
     
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  3. QUALITYTRUCK

    QUALITYTRUCK Road Train Member

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    Almost always ABS related.
     
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  5. EJ T660

    EJ T660 Bobtail Member

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    Apr 4, 2019
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    Try ABS actuator valve sitting i. The back of frame. Or one of the abs sensors is reading wrong
     
  6. Inderjit

    Inderjit Heavy Load Member

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    Sep 17, 2017
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    If the HSA TC and ABS lights are on then there will be a fault code or codes stored in the ABS ECU.
    You will need to scan it.
     
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