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348 Fuse Testing

Discussion in '348/355' started by njrockman, Apr 26, 2020.

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  1. njrockman

    njrockman Rookie

    Sep 3, 2015
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    North Jersey
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    Anthony
    #1 njrockman, Apr 26, 2020
    Hi All, I have been replacing/updating my relays and thought I would check over my fuses. I'm using a light. Car off. But does the car need to be in the on position or started in order to check some of the fuses?

    Thanks for any help!
     
  2. Ferrarium

    Ferrarium F1 Veteran
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    Jul 28, 2018
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    Eric
    #2 Ferrarium, Apr 26, 2020
    I just pulled them all and replaced them all as the prongs get corroded, I did the same with all the relays.
     
  3. Qavion

    Qavion F1 World Champ
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    Feb 20, 2015
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    Sydney
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    Ian Riddell
    #3 Qavion, Apr 26, 2020
    Are you checking the fuses in-situ or removing them?

    I haven't got my diagrams handy at the moment, but most fuses will either be powered straight from the battery or powered by the ignition key (ON/RUN). There may be a few fuses only active when certain relays are energised (I think the fuel pump fuse/s are an example). There are fuses elsewhere on the car, so you would have to take them on a case by case basis. Some systems (or subsystems) may even be unfused.

    Having problems with a particular system or just carrying out general maintenance?
     
    308 GTB likes this.
  4. A348W

    A348W Formula 3

    Jun 28, 2017
    1,847
    North Wiltshire, UK
    #4 A348W, Apr 27, 2020
    If you are just testing the fuse itself, You can check them in situ car turned off; just check the resistance across the fuse!
     
  5. Ferrarium

    Ferrarium F1 Veteran
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    #5 Ferrarium, Apr 27, 2020
    You can check spade fuses across the tops typically if that' the question.
     
  6. njrockman

    njrockman Rookie

    Sep 3, 2015
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    Anthony
    #6 njrockman, Apr 27, 2020
    I am check the fuses in situ. Yes, just doing maintenance. No issues. Knock wood.

    Thanks guys!
     
  7. Wade

    Wade Three Time F1 World Champ
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    Mar 31, 2006
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    Wade O.
    #7 Wade, Apr 27, 2020
  8. njrockman

    njrockman Rookie

    Sep 3, 2015
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    Anthony
    #8 njrockman, Apr 27, 2020

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