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1999 f250 light duty. Theft light flashes rapidly. Turns

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over but will not start...
1999 f250 light duty. Theft light flashes rapidly. Turns over but will not start. Pcm and fuel pump relays have been swapped and are working. Fuses all look fine. I even tried a new ford pats transceiver and still can't get it started. It is throwing code 13. Disconnected battery, touched terminals, reconnected, disconnected, danced a jig. Still not starting.
Submitted: 1 year ago.Category: Ford
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Answered in 14 minutes by:
6/21/2016
Ford Mechanic: James, Ford Technician replied 1 year ago
James
James, Ford Technician
Category: Ford
Satisfied Customers: 3,632
Experience: Ford Senior Master Tech, Ford gas and diesel expert, ASE Certified
Verified

Hello, This code is for the pats transceiver that goes around the ignition cylinder. When they fail they won't read the key. You can test to see if you have power and ground on the red and black wire. If you do this will need to be replaced. Once its replaced your vehicle will start and run again.

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Ford Mechanic: James, Ford Technician replied 1 year ago

If you have further questions please let me know. Also please remember to rate my answer so I receive credit for assisting you.

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Customer reply replied 1 year ago
Hi James. I bought a brand new transceiver from Ford and still had the same symptoms after installation. Power is good as I checked the codes after I disconnected it and got a code 15.
Ford Mechanic: James, Ford Technician replied 1 year ago

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 main dealer

1:4 Partial code only received. Try again. If not okay use different key.
If not go to main dealer

1:5 Key not programmed into PATS. Program key as above using master

1:6 Faulty link between PATS module and EECV
Go to main dealer

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Customer reply replied 1 year ago
I read that same info online. And the other key does not work either.
Ford Mechanic: James, Ford Technician replied 1 year ago

You swapped the PCM power relay with no difference correct? you replaced the transceiver from Ford and the code changed from 13 to 15? Did you try swapping the PCM diode to see if it makes a difference?

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Customer reply replied 1 year ago
Correct. I did not check the pcm diode. I'm assuming it's in the fusebox under the hood? Can I swap it for another one in the same box?
Ford Mechanic: James, Ford Technician replied 1 year ago

Yes there should be an AC diode next to the PCM diode. Try swapping these and see if it makes a difference.

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Customer reply replied 1 year ago
The diodes are little black plastic guys in the front of the under hood fuse box correct?
Customer reply replied 1 year ago
Found them. Switched them and still the flashing theft light and no start.
Ford Mechanic: James, Ford Technician replied 1 year ago

They are. How many keys do you have programmed? Is code 15 all you are getting now?

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Customer reply replied 1 year ago
Code 13 is the only code. There are two keys and neither work.
Ford Mechanic: James, Ford Technician replied 1 year ago

My next step would be to reprogram the keys. I am guessing you don't have the tools for that? I can opt out and see if another expert has a different option for you.

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Customer reply replied 1 year ago
K. I do not have the equipment for that.
Ford Mechanic: Juan Crespo, Tech Trainer replied 1 year ago
Juan Crespo
Juan Crespo, Tech Trainer
Category: Ford
Satisfied Customers: 1,526
Experience: A.S.E. Master Technician, Advanced Level, Emissions - Asian, Domestic, & European
Verified

Hi there. Different expert here.

In most cases, the keys last for the life of the truck. It's either the transceiver not sending the right signal to the instrument cluster, or the cluster itself not communicating with the PCM what causes the PATS to activate.

Ford made it real hard for a thief to steal that truck. So hard, that only qualified service facilities and licensed locksmiths have access to the tools that allow communication with these Passive Anti Theft Systems (PATS). In your case, I would suggest contacting your local licensed locksmith as a cheaper option to having to tow the truck to a Ford shop.

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Customer reply replied 1 year ago
The locksmith will charge me $260 to rekey it. It sounds pretty pricey for something that may or may not work. If it's the transceiver or module, will a locksmith be able to tell me without rekeying it?
Customer reply replied 1 year ago
Is there a way for me to check if the cluster is sending the signal? As stated prior I have checked the transceiver with a brand new Ford one and it still made no difference.
Ford Mechanic: Juan Crespo, Tech Trainer replied 1 year ago

A Ford NGS scan tool would be needed to check the cluster signals, whether IN from the transceiver or OUT to the PCM.

I agree with you that $260 is a lot of money - and how does he know it needs rekeying? If I were you, I would shop around until I found a locksmith that had experience with Ford trucks.

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Customer reply replied 1 year ago
I notice that the odometer will sometimes be blank. No characters or dashes at all. Possibly a loose wire causing both issues? Should I pull the cluster and see? Or is it an internal wiring issue that might be causing the no-start? In other words, if the cluster plug is dirty, unplugged, or not getting a good connection will any of these cause my PATS no-start issue?
Ford Mechanic: Juan Crespo, Tech Trainer replied 1 year ago

It could be a loose wire or a bad connection. You hurt nothing by trying, so go ahead and take the cluster out and see how everything fits back there. If nothing jumps at you, then it's probably an internal failure.

In that case, I'm afraid is a mandatory trip to Ford to get a new cluster programmed to the truck.

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Customer reply replied 1 year ago
Will a used cluster work if programmed by a Ford dealer?
Ford Mechanic: Juan Crespo, Tech Trainer replied 1 year ago

Yes, it would. The main thing would be to have it programmed.

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Ford Mechanic: Juan Crespo, Tech Trainer replied 1 year ago

By the way, it might help you to know their lingo when talking to those folk; Ford calls it "configuring the cluster" :)

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Customer reply replied 1 year ago
Lol. Thanks Juan!
Ford Mechanic: Juan Crespo, Tech Trainer replied 1 year ago

My pleasure.

Best Regards.

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Customer reply replied 1 year ago
I towed it to the dealer and they want $600 to replace the $75 transceiver. They say it's due to the need to program the pats after the install. I'm really in a pickle now. Is this really the case that it needs programming? If so, can locksmiths do the programming?
Ford Mechanic: Juan Crespo, Tech Trainer replied 1 year ago

Some locksmiths do the whole thing, including configuring. If I were you, I'd shop around to see where I could get the best deal.

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Ford Mechanic: Juan Crespo, Tech Trainer replied 1 year ago

I have to log out for the day. I’ll be back online ready to continue our conversation tomorrow from 2 to 8 PM EST. Please contact customer service at http://ww2.justanswer.com/help if you need immediate assistance.

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