Doors lock when I close the door

Discussion in 'General Discussions' started by rmsawyer73, Jan 24, 2017.

  1. rmsawyer73

    rmsawyer73 Member

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    I'm also completely fine ripping whatever this security system is but I'm worried that if I do while it's like this I won't be able to make the truck run again

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  2. rmsawyer73

    rmsawyer73 Member

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    Also what is this module? It's on the pass side right behind the battery cause that top wire doesn't look factory..... Lol it plugs in the top post and someone was super lazy and just looped the red wire across the top of the bay and drilled and passed it into the cab [​IMG][​IMG][​IMG]

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  3. rmsawyer73

    rmsawyer73 Member

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    I know it's a lot of posts in a row in short time but I dug into it and found were the red wire goes [​IMG] [​IMG] which is spliced in with the security system wires [​IMG] then these 3 wires coming from the security box [​IMG]
    run under the dash to the pass side in to this mess of wires and these 2 relays [​IMG][​IMG]

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  4. Roush PSD Interceptor

    Roush PSD Interceptor 7.3L Straight Piped Diesel

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    Behind the battery is your factory starter solenoid.
    That red wire is what tells the solenoid to run the starter motor.
    The mess in the right passenger kick panel is for door lock controls.
    The other bundle with small wires going to a small box is vibration or shock sensor.

    What happens if you unplug the entire white connector from the security system?
    Will the truck start then?

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  5. Roush PSD Interceptor

    Roush PSD Interceptor 7.3L Straight Piped Diesel

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    From your pic it looks like some one bypassed the relay on the starter interrupt and quickly ran the red wire across the engine bay.
    If you can trace wires that come from the coil/pack then you can jump or re-connect that wire interrupted by that relay.
    It may be a case of a bad coil
    Or ignition control module
    I'm trying to remember exactly how those year engines were fired.

    It has a distributor right?

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  6. Roush PSD Interceptor

    Roush PSD Interceptor 7.3L Straight Piped Diesel

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    Referenced that engine's firing type.
    Distributor, ignition module and coil.

    Hope you had luck with unplugging the main white plug.


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  7. rmsawyer73

    rmsawyer73 Member

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    Just tried up plugging the security box and the clicking stopped but it still doesn't catch and run

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    Last edited: Jan 29, 2017
  8. rmsawyer73

    rmsawyer73 Member

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    Yes it has a distributor

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  9. Roush PSD Interceptor

    Roush PSD Interceptor 7.3L Straight Piped Diesel

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    Can you have someone crank it while you check for voltage at the positive and negative terminals on the coil/ignition module, not the high energy output to the distributor cap.
    If you're getting voltage to the coil/ignition module during cranking but no spark, either the ignition module or the coil is bad.

    Since that appears to be a generic security system, the original installer could have used several different methods of install.

    Is there another added on relay close to the one where the red starter wire is that breaks a larger gray with a yellow stripe wire?

    That would be accessory key on
    interrupted
    If you are not getting voltage at the coil/ignition module during cranking.


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    Last edited: Jan 30, 2017
  10. Roush PSD Interceptor

    Roush PSD Interceptor 7.3L Straight Piped Diesel

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    Simple test light will do, connect alligator clamp to negative side of coil and probe tip to positive terminal of coil.
    Be careful not to touch the high energy coil wire to distributor during cranking.
    This method will show that you have both a good ground and 12volt pulse signal.
    The test light should flash.
    If it does but no spark coil is bad.
    Find a working test coil to put in it's place before buying one
    .

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