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Prius 2007 back-up light not working

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Nadee, Jan 13, 2020.

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  1. Nadee

    Nadee New Member

    Joined:
    Jan 6, 2020
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    Location:
    Srilanka
    Vehicle:
    2007 Prius
    Model:
    Plug-in Base
    My prius 2007 back-up light suddenly stop working. Both side
    Bulbs and 10a fuse good but BK/UP LP relay receiving 12 via 3H-6 terminal as well as 3H-7. But when put in to reverse 3H-7 voltage only droop upto 9volt. Please be kindly help me
     
    #1 Nadee, Jan 13, 2020
  2. pasadena_commut

    pasadena_commut Senior Member

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    May 2, 2019
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    Location:
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    Vehicle:
    2007 Prius
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    N/A
    I don't know what those lines are. Are both to that relay?

    Since relays do fail start by checking that.

    If you pull the relay is there continuity all the way from the expected pin(s) to the taillight bulbs?
    If you test the pulled relay on a bench does the side which is supposed to switch actually do so?
    Is the resistance on the drive side of the relay within the acceptable range?
    Are there any internal shorts in the relay?
     
    #2 pasadena_commut, Jan 13, 2020
    SFO likes this.
  3. Nadee

    Nadee New Member

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    Jan 6, 2020
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    Location:
    Srilanka
    Vehicle:
    2007 Prius
    Model:
    Plug-in Base
    Thanx for reply
    Relay ok i put in to a anther prius and wiring also ok. But still no reverse light.
     
    #3 Nadee, Jan 14, 2020
  4. Stormy Steve

    Stormy Steve Junior Member

    Joined:
    Jul 13, 2022
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    Location:
    Rockmart ga
    Vehicle:
    2007 Prius
    Model:
    II
    I never found any relay.so/I wired a sw.inmy glove box/console/ lights now!
     
    #4 Stormy Steve, Sep 13, 2022
  5. Stormy Steve

    Stormy Steve Junior Member

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    Location:
    Rockmart ga
    Vehicle:
    2007 Prius
    Model:
    II
    Please/I hate I rigged it.
    But theres Alot of stuff behind the glove box /someone said a black relay?
    Didnt see it.
     
    #5 Stormy Steve, Sep 13, 2022
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