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    Fuse Panel-CB 12

    Recently my locks stopped working. All that happens when I hit the button is a click that sounds like it is coming from somewhere in the passenger side dash.

    Checked CB12 in the fuse panel, a 30A circuit breaker. It was hot as hell, had to use pliers to get it out. So I bought a new one. It sparked when I put it in and instantly tripped. Was already warm with the prongs hot to the touch.

    I'm assuming I have a short somewhere. What should I start looking for and where?


    sigpic
    - 2004 Ford Thunderbird - 2006 Ford F150 XLT - 2018 Ford Explorer Limited - 1958 Mercury Medalist

    #2
    The click you hear on the passenger side is coming from the kick panel. The lock/unlock relays are located there. If you are hearing a click, we'll assume at the moment that your door locks are not the problem.

    The cigar lighters are also on this circuit, so start by checking all your lighters. Make sure no smart ass friend dropped a coin in them, or other conductive material is in there. Try the breaker again (with lighters removed, and sockets checked) and see if its still tripping.

    Have you got power seats? They're also on that circuit. Unplug them after the lighter check and try the breaker again.

    Alex.
    Last edited by GM_Guy; 07-03-2010, 10:49 PM.

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      #3
      Originally posted by MrMarquis View Post
      Recently my locks stopped working. All that happens when I hit the button is a click that sounds like it is coming from somewhere in the passenger side dash.

      Checked CB12 in the fuse panel, a 30A circuit breaker. It was hot as hell, had to use pliers to get it out. So I bought a new one. It sparked when I put it in and instantly tripped. Was already warm with the prongs hot to the touch.

      I'm assuming I have a short somewhere. What should I start looking for and where?
      I'm leaning towards the cig lighters too. Here's what I'd suggest. Put a test light in the two prongs that would be where the breaker would normally be (or a 194 bulb, just be sure to not let it touch anything that might burn). Unplug stuff until you find the short. When you do, the light should go out. This method saves circuit breakers and fuses which is nice too. Unplug them one at a time. All of the circuits that are on that circuit. The door locks only work with the switch depressed. So like GM guy said, the power seats are on this circuit too.

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        #4
        I just so happen to have a couple spare 194 bulbs around...

        Check the cigarette lighters in the rear, nothing in them. I think it's with the seats, but we'll see...I'll have a night to look over the car, so that's what I'll probably be doing.


        sigpic
        - 2004 Ford Thunderbird - 2006 Ford F150 XLT - 2018 Ford Explorer Limited - 1958 Mercury Medalist

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