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PATS Bypass on F-150

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Member - Posts: 18
Member spacespace
Joined: March 17, 2002
Location: United States
Posted: July 04, 2004 at 12:58 PM / IP Logged  
The cluster is responsable for comparing and storing the PATS signals for up to 8 keys, the cluster is more than just the light, but anyways your right time for a tow truck I guess waiting until Tuesday when the dealer opens.
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Joined: December 23, 2002
Location: Arizona, United States
Posted: July 04, 2004 at 1:01 PM / IP Logged  
Don't you mean computer, ecu or like? The cluster is the thing you look at to see how fast you are going, fuel gauge, etc... By the way, there are reasons companies make bypasses for these.
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Member - Posts: 33
Member spacespace
Joined: June 20, 2004
Location: United States
Posted: July 04, 2004 at 1:59 PM / IP Logged  

Passlock system is an effective all-electronic theft detterent system which shuts off fuel delivery if the vehicles ignition lock or starter switch is tampered with or changed in any way.  

This electronic system consists of the following components: 

1. a passlock cilinder with a sensor and a magnet.

2  a paslock ignition/starter switch witch transmits an R-code to the IPC to signal the beginning of a start cycle.

3.  a module in the instrument panel cluster  (IPC) which reads and accepts or reject a voltage drop (R-code) transmitted to it when the lock cilinder is released from the crank position to "on".

If all the above criteria are succesful then the IPC will send a GO or a NO-GO output to the PCM in order to continue running (enable fuel). 

If you insert a coded key in the ignition lock, this will recognise it as a "true" key and this ignition lock will sent a signal to the passlock ignition/starter switch.    This ignition starter switch will then send an R-code to the module in the Instrument Panel Cluster (IPC).   This IPC will then send a signal to the PCM to enable engine fuel delivery.

It is almost impossible to bypass this system, without expensive computers and knowledge.    How these car are stolen are usually because the thief has broken into a house and stole a key.  Other than that it is almost impossible, or you have to be a very skilled computer freak, but then again, you would not be stealing cars, but rather be a millionaire with all that knowledge.  Simple as that.   This pats system is not an alarm system.    

If you can start the car and it dies immediately (because of fuel delivery) then you have PATS problem.   

Your only solution:

Take the car to the dealer and if you are lucky then your keys have lost all their codes.  They will reprogram all the keys again.   (200 dollars).

Worst case scenario:  They have to replace the whole pats system (very expensive)

Even worst case scenario:   You fried the PCM.    (but I dont think so)

Even more worst case scenario:  they have to replace the whole PATS system and a new PCM.

If you can start the car and then it shuts off, then it is PATS related.   But if you cannot even crank the starter, then it might be something more dramatic like the PCM in combination with PATS.

Your only solution:   Let the skilled technicians at Ford dealer look at it. 

Keep us posted with what the Ford people say.

I trully hope that it is just key prgramming

Member - Posts: 33
Member spacespace
Joined: June 20, 2004
Location: United States
Posted: July 04, 2004 at 2:38 PM / IP Logged  

I could be wrong, but to my knowledge that is how PATS works.   

Keep us posted with your findings

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Joined: March 08, 2002
Location: Manitoba, Canada
Posted: July 04, 2004 at 3:45 PM / IP Logged  

Try these steps for programming a new key. It's s shot in the dark before calling the tow truck:

for Ford keys (Later 1998-newer Ford, Lincoln, Mercury)

If you want to initiate a new master key....

1. This requires that the vehicle be connected to special dealer equipment. There are two ten minute delays involved while this device erases all existing key programming and sets up the vehicle computer to accept new key codes.  Two new keys should be ready because the system requires a minimum of two keys in the program. After the first two keys are programmed, additional keys can be entered individually by following the instructions for adding duplicate keys (below).

If you want to add a key....

**You must have two original keys to perform this procedure. If you only have one key, you WILL have to take it to the dealer to get it programmed**

1. Insert and existing (working) key into the ignition cylinder.

2. Turn the ignition cylinder ON (RUN) and back to OFF. Ignition should stay on for at least ONE SECOND.

3. Remove the existing key and, within TEN seconds, insert a second working key and turn it to ON (RUN) and the back OFF. Ignition must be in ON for at least ONE second, but no more than TEN seconds. Remove the key.

4. Insert the new key before TWENTY seconds have elapsed and turn it to ON (RUN). Leave it the ON position for at least ONE second and turn back to OFF.

5. The security light will light up for THREE seconds to indicate that the new key has been successfully programmed.

6. To program additional keys, repeat steps 1 through 5

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Member - Posts: 5
Member spacespace
Joined: March 04, 2004
Location: United States
Posted: July 04, 2004 at 8:51 PM / IP Logged  
I have a simular proble a friend of mine brought his 1999 explorer in for service and had a remote start installed by some BUTCHER it worked for a while bu was intermitent and sometimes the car wouldnt start at all and now the explorer has been towed to our shop.
This is the problem I had a friend of mind bring his computer to program a key for this vehicle and it took the program no problem but the car still wont start it cranks but no go. I have tried to disarm the factory pats system by using the disarm wire but the factory pats system wont shut down I cant seem to get anythiong to work to get it started. I have repaired the install of the remote system but cant get anything to get this car started I need some help here other than short of sending it to the dealer and getting the pats replaced If anyone has replaced the pats system before please advise me on how or if to involved then tell me what moduels I might have to get hold of to get this vehicle running again.
sincerely: Dale
Member - Posts: 18
Member spacespace
Joined: March 17, 2002
Location: United States
Posted: July 04, 2004 at 11:05 PM / IP Logged  
Datrick, Your correct and you have explained the Pats system exactly as I read it from the Ford service DVD ROM manual. These Ford trucks and cars (mustang 5.0) are getting stolen daily and ,most are without the keys but that a whole different thing. I hoping your senario with just they reprograming of the keys is it as the cluster thief light fast flashes indicating a unauthorized key. I have Fords Extended Warranty and I will try to just play dumb about what happened and see if they offer to cover the programing under warranty if not I guess I have no choice as I got to get it running. Thanks for your input and everyone elses I will keep you all informed as this will be a major learning experience for us all especially me....and fell free to continue any replies you fell fit.
sub sonic 
Member - Posts: 6
Member spacespace
Joined: June 29, 2004
Location: United States
Posted: July 05, 2004 at 12:42 PM / IP Logged  

i've heard that if you power up your no 1 coil by running an acc. power wire to it. it will also power up all the rest and then you can start your truck. the reason you cant start your truck is because pats is still working fine.PATS Bypass on F-150 - Page 2 -- posted image.

ive also heard that if you first remove the bcm or gem whatever fuse  then turn your ign. switch to run position and then replace the fuse it skips the pats procces. all this info. ive received from car thieve thugs that come to my car audio shop and claim to steal tons of trucks like yours. then again these same jokers claim they can still steal any car our shop secures. im yet to see just one. good luck!

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Member - Posts: 21
Member spacespace
Joined: April 27, 2004
Location: United States
Posted: July 05, 2004 at 2:45 PM / IP Logged  

Also, you don't mention if your truck's under warranty still or not.   If it is, put all the crap back so it looks absolutely factory and then call them from your cell phone and tell them that you just got stranded at some store while out and you need to have it towed into the dealership.

Even if you're not under warranty, you're much more likely to find a place that's going to be sympathetic and cut you a break.  If they know that you were jerkin' around in your garage, you're screwed - they're going to put it to you.

And not to add salt to the wound, but I just (yesterday) put a PATS bypass in my F150 and it took all of about 5 minutes.  I was actually suprised at how easy it was.

Good luck, please post your results in the event that someone has this problem again.

Member - Posts: 18
Member spacespace
Joined: March 17, 2002
Location: United States
Posted: July 05, 2004 at 9:27 PM / IP Logged  
I towed it to the dealer today around noon and haven't heard back from them, I have fords extended premium extended warranty since I'm out of the factory warranty.
Subsonic, too bad I read your post after the truck was at the dealer, if not I would of tested those hotwire thief tricks and let you know if it is a fact or a fiction. The fuse trick sounds like it might work, but the coil one doesn't seem like it's for the ford truck as the fords shut off the fuel, but sure seems like it might work on others. Good tip, Thanks and I'll keep you all posted.
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