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2012 4900 no power out of PNDB

Discussion in 'Western Star Forum' started by Dirtworks85, Feb 2, 2022.

  1. Feb 2, 2022 #1
    Dirtworks85

    Dirtworks85 Bobtail Member

    2
    1
    Feb 2, 2022
    0
    We have a 4900 a battery went bad on, found and changed battery. Now truck is completely dead, chased cables and found there is power going into PNDB but no power out, jumped the incoming wire to outgoing everything lights up. Changed the shutoff switch, didn’t help could PNDB be bad?
     
    Dirtworks85, Feb 2, 2022
    Dirtworks85, Feb 2, 2022
    #1
    SiRmichael1920 Thanks this.
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  3. Feb 2, 2022 #2
    QUALITYTRUCK

    QUALITYTRUCK Road Train Member

    1,780
    1,726
    Jun 14, 2009
    romulus,mi
    0
    Yes. PNDB have been a problem on all Daimler products since introduced. Water intrusion from being mounted under rain drip rail. Suprised it lasted this long (2012)
     
    QUALITYTRUCK, Feb 2, 2022
    QUALITYTRUCK, Feb 2, 2022
    #2
    Dirtworks85 Thanks this.
  4. Mar 17, 2023 #4
    SiRmichael1920

    SiRmichael1920 Bobtail Member

    1
    0
    Mar 17, 2023
    0
    @Dirtworks85 is there a proper way to test power going into pndb? Can I pull one of plugs and test a certain pin out?
     
    SiRmichael1920, Mar 17, 2023
    SiRmichael1920, Mar 17, 2023
    #4
  5. Apr 23, 2023 #4
    Westernstar321

    Westernstar321 Bobtail Member

    6
    3
    Aug 1, 2022
    0
    I have same problem with my 2012 4900. Power going to Pndb but none coming out. I put a jumper wire from power coming in to the midi fuse going out. Everything works and I was able to drive truck home. I noticed before this happened my voltage was fluctuating between 13-16volts. Just wondering if that did something to the Pndb. I also saw some other Pndb on eBay that looks exactly the same but has different part number but much cheaper. Anyone try Pndb with different part numbers?
     
    Westernstar321, Apr 23, 2023
    Westernstar321, Apr 23, 2023
    #4
  7. Apr 23, 2023 #5
    QUALITYTRUCK

    QUALITYTRUCK Road Train Member

    1,780
    1,726
    Jun 14, 2009
    romulus,mi
    0
    Must use same part#. The usual failure is water intrusion.
     
    QUALITYTRUCK, Apr 23, 2023
    QUALITYTRUCK, Apr 23, 2023
    #5
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