Question about 2002 Ford F150 Regular Cab

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I believe that Anti theft has been trigerred, how

I believe that Anti theft has been trigerred, truck will not start how what can I do

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If you put a programmed key in the ignition and turn to the run position, the theft light should go out, no waiting should be required.

Make sure the key is one programmed for the truck, and make sure you do not have another RFID tag ( another PATS key, Speed pass tag, other "swipe" style tags ) near the ign switch when you do this.

If the key is programmed for the truck, and the theft light will no go out, you have another problem, usually the next step is the PATS transceiver.


Posted on Nov 20, 2009

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  • Steve S
    Steve S Nov 20, 2009

    Do you have another key to test with, aside from this ( I am makign an assumption that the testing is with 1 key ) ?

    Try a quick test :
    PATS key for the truck ( remove from key ring ).
    Turn key from off to run ( do not start ).
    - Does the theft light go out ?

    If you can, try this with both keys.


  • Steve S
    Steve S Nov 20, 2009

    Should have included.:

    When you turn the key to the run position, if the theft light goes out, next turn the key to the start position.
    Does the truck have a crank no start ?

    If the theft light goes out when you turn the key to the run position, then we need to look at the fuel inertia switch, and fuel pump fuse and relay.

    If the light goes out, did you hear the fuel pump run ( for ~ 2 seconds ) when you turn the key to the run position ?

    There is a schrader valve on the fuel rail to the injectors you can take the cap off, and with a rag check for fuel pressure by slightly pressing the tip in the schrader valve in ( it should squirt - Be Careful watch your eyes ! ).


  • Steve S
    Steve S Nov 20, 2009

    ( need to watch what I am pressing - accidentally clicked add )

    My 2001 SCrew had a crank no start @ ~ 30K miles and it was a bad fuel pump relay. Swapped with the trailer tow battery charge relay, and it fixed the problem )

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If the anti theft has been triggered all u have to do is unhook the battery for about 10 min. then reconnect the battery it will reset your computer!!! if that doesn't work it probably isn't the anti-theft you might wanna check the crank fuses or the starter relay!!!

Posted on Nov 20, 2009

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