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Anti Theft Light Flashing On Dash , Car wont start.

Discussion in 'Stock 1995 - 2001 Explorers' started by Plowy, December 9, 2008.

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    1. 2000StreetRod

      2000StreetRod Staff Member Moderator Elite Explorer

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      PCM fires injectors

      The PCM controls the energizing of the injectors. Each injector has a dedicated pin on the PCM that grounds the injector at the appropriate time for the appropriate duration. If you wire the injectors to ground they will be permanently energized and your engine will not run due to an excessively rich mixture.

      I searched quite a bit for the thread I remembered reading about deactivating PATS but couldn't find it. There's a wire or jumper that's used on the assembly line. If it was easy a thief could do it and defeat it's purpose. All I could find was by flashing the PCM with a custom tune.
       
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    3. Paul1967

      Paul1967 New Member

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      Yeah I have searched all of those too and then some. From what I understand from the ford mechanic I have to find the starter interupt relay and ground the light green and purple wire, but I'm starting to wonder if hes fibbing or if the relay exsist cause I havn't been able to find it. I'll keep trying sooner or later I will get it and the lady that the truck is a gift for will finally get it.
       
    4. budwich

      budwich Well-Known Member

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      I doubt that it a "starter associated wire" if there is a "wire around" method. Me thinks there is a "plug terminator" that might do something for you... but that is just a guess as the theft module "talks" to the system with more than just "grounds".
       
    5. showpony2010bc

      showpony2010bc New Member

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      ok guys.. my turn to contribute.... I just went through this same problem with my 2000 explorer... damn anti theft light blinking, not starting.... after spending $350 at the local dealer and not fixing the problem I got mine fixed... It was a simple electronic relay switch. under hood, drivers side.. relay # FOAB-14B192-AA about 1"square relay..
      repair relay part # listed as: FOAZ-14N089-A about $20 for the relay...
      works perfect now.... what a headache.... perfectly maintained, but wouldn't start because of a faulty relay switch... needless to say the original $350 was money thrown away for nothing...

      repair sheet states: NO START. THEFT LIGHT BLINKS RUN SELF TEST. NO COMMUNICATION WITH PCM. TEST PCM POWER & GROUND CIRCUITS. NO VOLTAGE PRESENT AT PCM CONNECTOR. PCM POWER RELAY STICKING, CAUSING NO START CONCERN. REPLACE PCM POWER RELAY, RUN SELF TEST AND REPAIRED VERIFIED...

      hope this helps someone else and eliminates a great deal of unnecessary headaches..

      good luck... shwpony2010bc
       
    6. showpony2010bc

      showpony2010bc New Member

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      just an update, the original repair was for pats module, passive anti theft module.

      supposedly they replaced that and fixed the problem... problem wasn't fixed.

      From now on I'm going to ask for the old part when I get anything replaced... don't think

      they replaced the pats module like they said they did...
       
    7. christopher t

      christopher t New Member

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      Thanks. Good info. I'm having the same trouble but intermittently. Sounds like the relay is the likely culprit.
       
    8. heyscuba

      heyscuba New Member

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      you are a genius,... and you saved me a lot of money because this worked for me,....!!!
      :salute:
       
    9. SteFin

      SteFin Member

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      There's a youtube video haven't tried it but involves fooling pats so you could try it to determine if its pats here's the link
       
      Last edited by a moderator: July 7, 2013
    10. coolbreeze48

      coolbreeze48 New Member

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      I have a 2000 ranger with a rapid flashing theft light, starter won't work, jumped starter relay to make starter operate, but still won't start because fuel system is also deactivated. Is there any place to find a wiring diagram of the PATS system. I have looked all over the net and have had no success. would like to bypass the whole system if possible but from what I have found that can't be done due to the ECM control of the starter, fuel pump and the injectors. guess the only option I have is to take it to the dealer which will require it to be towed about 15 miles. tried a number of ways to reset it but to no avail. anyone have a sure fire way that I can use to get the vehicle cranked so that I could drive the 15 miles rather than have the truck towed. Any suggestions will be appreciated.
       
    11. njkode

      njkode New Member

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      From everything I ever read there is no way to bypass the PATS system. Do you have an extra key? When my gf's explore had this problem it ended up being the Key. Of course she only had one. If she would try repeatedly (sometimes it would take up to 30 min) she could get it to start. Once it finally failed that was it she had to have it towed to the dealer and have new keys made.
       
    12. Dave 1955

      Dave 1955 Active Member

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      I have maybe a dumb question but I want to know.
      If I have a good key and put that up under the dash could I then use just a regular cut key to start it?
      Will the transponder in the good key work without actually being in the ign?
       
    13. jr_96

      jr_96 New Member

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      I have a 97 explorer and i dont have a pats at all and all of a sudden the system wont arm. when i lock the truck usually the theft light for the 95-97 explorers would illuminate and then flashing showing the alarm is armed. now that light doesnt turn on let alone flash. when i lock the truck it doesnt engage the alarm.also i had replaced the RAP module from a 2000 explorer and the keyless entry part works great and it used to engage the alarm till yesterday i locked the truck and the light wasnt on anymore. think you could help me? side note(i cleaned the battery off that morning and charged it at my tire shop and soaked my cables in baking soda and water. for a couple hours)
       
    14. JusTheUsual

      JusTheUsual Active Member

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      bumped for certain guy looking for a thread like this...
       
    15. johnnypunany

      johnnypunany New Member

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      Theft light flashing

      Sorry if this was already answered.
      But my theft light flashes only when i shut the door after leaving the vehicle. I hit the lock button on my remote and theft light is still flashing. And stays flashing until I return later and turn the car on (with no problem).
       
    16. dryson

      dryson New Member

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      Here is the issue that I am having.

      This morning my Ford Explorer Sport ran fine. I went to auto parts store and purchased some MAF spray and sprayed it into the Mass Air Flow sensor.

      I also purchased some Sea Foam to clean any carbon deposits up on the inside of the engine as I have been having idle issues the truck shutting off or dropping to a low RPM when the accelerator is released.

      After getting home I added the Sea Foam to the engine via the hose that connects to the canister looking device that is directly behind the brake fluid resevoir.

      The Sea Foam performed just like it should and smoke appeared. Shortly thereafter the truck simply shut off and would not restart.

      I am assuming that the issue is the Theft Module as the battery is less than two weeks old and the battery charge indicator indicates the battery is low even though I placed a portable charger on the battery for around an hour.

      When I try to start the vehicle the engine does not turn over and the truck acts like the battery is completely dead where a loud click comes from the left side of truck.

      Also when I try to start the truck several times the power locks will lock and then unlock automatically.

      I have already tried the negative battery terminal trick but that has not seemed to fix the problem.

      Also when I turn the key to the ON position I can hear the Fuel Pump turn on.
       
    17. dsullivan

      dsullivan New Member

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      anti-theft light flashes rapidly.

      truck wont start anti-theft light flashes rapidly. owner manual states to call dealer. does vehicle have go to dealer or is there reset that can be done at home:usa:
       
    18. Rjsmama

      Rjsmama New Member

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      Flashing theft light

      Hi all, please take this for whatever it is worth. I'm not a mechanic, just a busy mom. My 1997 Expedition will sometimes flash its theft light, the engine will start, but immediately shuts off. In the past, I had resolved it with a spare key. After it re-sets and starts, the other key that wouldn't start it mysteriously works again too. However, I had a different situation this time. It pulled this little stunt on me again and the spare key trick did not work. I unhooked the battery - no go. Finally, out of pure frustration, I remembered that when I programmed my keys myself (do NOT pay a dealer for this because it is ridiculously easy), it involved using the lock/unlock switch on the door. I had my child waiting impatiently for me to drive her to school and on a whim - I pressed/toggled the lock/unlock switch on the door handle multiple times. How many? Couldn't tell you for sure, but I would guess it was around 20 or so - very rapidly. My daughter looked at me like I had lost my mind and before she could even ask what the heck I was doing, I tried the key again, turned it and VOILA! I have no idea why it worked, but it somehow reset it. No problems since. All keys work again. I suppose that the ECM could be going out - but if you are stuck and just need to get it started (even to just get it to a mechanic), it might be worth a shot. Please, no lectures here about the silliness of it all. It simply worked and I wanted to share. If it helps one person, then I suppose it's worth the time to type it. Best wishes to all! : )
       
      Last edited: April 8, 2015
    19. Explorer Jeff

      Explorer Jeff New Member

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      Engine does not start: LED flashes rapidly...

      Leave ignition on until the LED starts to flash a 2 digit code (sequence/pause/sequence)
      Check the following codes:
      Code flashes:
      1:3 Key code not received. Is key screened by other keys or objects? Try different key: if okay then first key is faulty. If not go to dealer.
      1:4 Partial code only received. Try again. If not okay use different key. If not go to dealer.
      1:5 Key not programmed into PATS. Program key(s) using locksmith/dealer, or 2 keys of your own which work.
      1:6 Faulty link between PATS module and EECV. Go to dealer.
       
    20. showpony2010bc

      showpony2010bc New Member

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      relay switch could be the problem.

      ok guys.. my turn to contribute.... I just went through this same problem with my 2000 explorer... damn anti theft light blinking, not starting.... after spending $350 at the local dealer and not fixing the problem I got mine fixed... It was a simple electronic relay switch. under hood, drivers side.. relay # FOAB-14B192-AA about 1"square relay..
      repair relay part # listed as: FOAZ-14N089-A about $20 for the relay...
      works perfect now.... what a headache.... perfectly maintained, but wouldn't start because of a faulty relay switch... needless to say the original $350 was money thrown away for nothing...

      repair sheet states: NO START. THEFT LIGHT BLINKS RUN SELF TEST. NO COMMUNICATION WITH PCM. TEST PCM POWER & GROUND CIRCUITS. NO VOLTAGE PRESENT AT PCM CONNECTOR. PCM POWER RELAY STICKING, CAUSING NO START CONCERN. REPLACE PCM POWER RELAY, RUN SELF TEST AND REPAIRED VERIFIED...

      hope this helps someone else and eliminates a great deal of unnecessary headaches..

      good luck... shwpony2010bc
       
    21. Cobraguy

      Cobraguy Elite Explorer

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      I wonder why that would trigger the PATS light...

      I think I'm going to go out and duplicate that and see what happens. I find that very interesting.
       
    22. trebormesos

      trebormesos New Member

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      No Start

      Having the same issue on a 2010 Ford Flex.

      rapid flashing theft LED
      random no start... nothing no clicking
      Sometimes putting in N and back into Park has helped

      I just got a call from the FORD Dealership and they say their best technician said it is the starter. I am worried that it is not.
       
    23. njkode

      njkode New Member

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      When it does start does it start strong?
      When you pick it up, I'd ask them what their plan is when this doesnt solve the problem since you do not think they diagnosed it correctly.
       
    24. Dezza85

      Dezza85 New Member

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      PATS theft light flashes

      Hi guys,
      First things first i replaced the dash and the ecus attached, so pats module and the gem I beleive. (yes I'm silly and if I knew what I no now I wouldn't have...)
      The the engine wont crank at all, and the after the rapid flashing of the theft light the pats module was giving code 1-5 (1:5 Key not programmed into PATS. Program key as above using master )
      OK I thought it was a case of getting the keys coded to the pats system.... so payed for a new key to be cut as it requires 2 keys to program. the locksmith programmed the keys but couldn't get the light to stop flashing and start the engine.
      So now the engine cranks but don't start and the new code is 1-6 (1:6 Faulty link between PATS module and EECV Go to dealer)
      Now i'm stuck.
      What can i do as i cant afford to take it to the dealer. I would prefer to buy a cheep scanner/programmer that can do the job, does any1 know of one. Or is there any1 in Adelaide, Australia with one that could help?
      does the pats module need to be paired to the eecv? is this the issue?
      I have searched the forum intently to find an answer and appoligise if i missed one.
      im sure this has been done before no doubt, so please help! im pulling my hair out.
       
    25. Dezza85

      Dezza85 New Member

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      Sorry it was on a 1998 ford explorer
       
    26. DMF0104

      DMF0104 New Member

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      PATS connected to transmission in any way??

      Hi guys, Sorry to drag this dead horse through the mud one more time, but I'm at a loss and my mechanic husband is also at a loss.
      He just changed the transmission in our 98 exp (last year the car decided it wouldn't move anymore and it had to be towed home where it sat till this week)
      When he went to start it to go test the new (old) trans , it wouldn't start. Did schrader test etc determined no fuel to engine , replaced fuel pump. Tried again nada. So I went hunting here and found the thread about PATS issues and sure enough the theft light goes ballistic when key turned . Only one key (has crack but had it when the car was working perfectly)

      Is is possible that something different happened when the transmission was changed? is there a possibility the trans has something to do with the PATS not working? I'm at my wits end and hoping for some suggestions as I'm REALLY tired of begging rides from people while he's at work.
       

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