2010 KW T800 Fuse (possible electrical) issue. Help please

Discussion in 'Kenworth Forum' started by missy1st, Sep 8, 2021.

  1. missy1st

    missy1st Bobtail Member

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    Jan 29, 2013
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    5A44CAA4-E988-4073-A2A0-94EED4594756.jpeg

    B1
    20A
    DCU

    Anyone know what this fuse controls? (This is in the fuse box under the hood.) Every time I put a 20A fuse in there it blows as soon as the prongs touch inside.
     
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  3. Goodysnap

    Goodysnap Road Train Member

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    Jul 12, 2017
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    Power supply to DEF Dosing control unit. Either the wiring is shorted to ground or the controller is internally shorted. I Would start with disconnecting the EAS and DCU and see if the fuse still blows. If it does, you will likely need schematics unless you happen to find the issue with a visual inspection.
     
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