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  #1  
Old 01-09-2010, 11:31 AM
GirouxBodyShop GirouxBodyShop is offline
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Security problems (cant start truck)

So I turn the key to the on position and all the theft light flashes repeatedly. I continue to try and start it but nothing! Any ideas on what to do?
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  #2  
Old 01-09-2010, 12:35 PM
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wildcard30 wildcard30 is offline
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Is the PATS key programmmed for the truck? I believe a rapidly flashing indicates problem with the PATS system. It may indicate a the key is not programmed for the truck, or some other problem with the PATS system.

Here's some additional info on the PATS system:

DIAGNOSIS AND TESTING
Passive Anti-Theft System (PATS) —

Principles of Operation

The ignition key read process is initiated by turning the key to the ON or START position. When a valid PATS key is turned to the ON or RUN
position the PCM queries the PATS transceiver over circuit 1215 (WH/LG). The transceiver then reads the key code and sends the code to the PCM over circuit 1216 (GY/OG). The PCM then validates the read code against stored authorized keys. If the codes match, the PCM then enables the starter using circuit 1785 (LG/VT) and turns on the anti-theft indicator for 3 seconds by applying ground to
circuit 1269 (OG/RD). If the codes do not match, the starter remains disabled and the vehicle does not
start. The PCM then illuminates or rapidly flashes the anti-theft indicator by applying ground to circuit 1269 (OG/RD).

419-01-1 Anti-Theft 419-01-1
DIAGNOSIS AND TESTING
Passive Anti-Theft System (PATS) — Diagnostic Trouble Codes (DTC)

Descriptions
Expanded Diagnostic Trouble Codes (DTC) Descriptions

DTC Expanded Description

B1213 Less than 2 keys programmed to the PATS control. Erase the continuous codes, cycle
the ignition, then carry out the self-test again. If DTCs B1232, B1600, B1601, B1602,
or B1681 are present, they must be serviced first. If DTC B1213 is the only self-test
DTC, program the PATS keys.

B1600 No PATS key read by the PCM. This can be caused by the PATS key, the PATS
transceiver, the circuits between the PATS transceiver and the PCM, and/or the PCM.

B1601 Unprogrammed PATS key. There is no issue with the PATS key itself, but the key
must be programmed into the PATS memory (unless the maximum number of keys are
already programmed). Refer to Key Programming Using Two Programmed Keys in
this section. No parts need to be replaced for this DTC.

B1602 Partial PATS key was read. Make sure that an approved PATS key (Ford, Rotunda,
ILCO, Strattec, HUF, or Valeo) is being used. Large metal objects, additional PATS
keys, or devices used to purchase gasoline located on the customer’s key ring can
cause interference. Instruct the customer to keep such items from touching the ignition
key during engine start. It is not necessary to remove the objects from the customer’s
key ring. Remote starter equipment can also cause this DTC. Remove any remote
starter equipment close to the transceiver before conducting further diagnosis. This
DTC can be caused by the PATS key or the PATS transceiver.

B1681 PATS transceiver module signal is not received by the PCM. This DTC can be caused
by the circuits between the PATS transceiver and the PCM, the PATS transceiver, or
the PCM. Follow the pinpoint test for diagnosis. This can also be caused by using the
incorrect transceiver part number. Make sure that the correct transceiver part number is
being used.

B2103 Transceiver module antenna failure. Replace the transceiver module.

B2431 The ignition key was not programmed. Make sure that the correct key is being used.
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Old 01-09-2010, 08:13 PM
Greg B Greg B is offline
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Had a problem with the wife's car similar to this. Turns out the grocery store check cashing card on her key ring was the problem. The magnetic strip with her check cashing info was being picked up by the pats receiver and wouldn't let her start the car. Took all things off her key chain that had a strip on it or a bar code and the problem was gone.
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Old 01-09-2010, 11:59 PM
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Quote:
B1602 Partial PATS key was read. Make sure that an approved PATS key (Ford, Rotunda,
ILCO, Strattec, HUF, or Valeo) is being used. Large metal objects, additional PATS
keys, or devices used to purchase gasoline located on the customer’s key ring can
cause interference. Instruct the customer to keep such items from touching the ignition
key during engine start. It is not necessary to remove the objects from the customer’s
key ring. Remote starter equipment can also cause this DTC. Remove any remote
starter equipment close to the transceiver before conducting further diagnosis. This
DTC can be caused by the PATS key or the PATS transceiver.
I've wondered about that, never saw it in print before. Good info!
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Old 01-10-2010, 01:38 AM
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my wifes fusion just magically decided to lose the PATS codes one day. had to get towed to the dealer to have the PCM re-programmed. they had never seen such a thing before.
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Old 01-10-2010, 07:24 AM
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Had this problem with my '08 F-150. the sensor loop in the collum failed. It did set a code. I forget the code although I did post it at the time.
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Old 01-10-2010, 02:00 PM
Greg B Greg B is offline
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What Wildcard30 stated is pretty much verbatum out of the Ford shop manual. And extreme cold weather can cause all kinds of problems with the electronics that are on these newer vehicles. I could see the PCM or the GEM losing it's data in extreme cold weather.
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Old 03-08-2010, 07:10 PM
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B1681 - Error Code

Hey Group. 2001 Ranger 3.0 that won't start (No Crank, No Start) the only error code I can pull is B1681. Can anyone offer up some troubleshooting steps or insight as to where to start. Thanks.
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Old 03-09-2010, 06:24 PM
Greg B Greg B is offline
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B1681 is PATS transceiver signal not received. That would cause a no start. If you have the encoded key, make sure there are no gas card or grocery store cards on the key ring with a magnetic strip on it. That can prevent the transceiver from receiving the signal from the key. If the key is encoded and there are no gas or grocery store cards on the key ring, it's possible that the receiver is bad. It's located in the steering column near the key lock cylinder.
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Old 10-05-2012, 10:56 PM
firoscarpio firoscarpio is offline
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cOMO SOLUCIONAR CODE p1601
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Old 01-31-2013, 08:11 AM
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I have a code P1260 and B1213 code. I first started with recalibrate the pcm with my IDS and it up loaded fine and fired once. Then it tells me to recalibrate the IC and when I try and do that the it says no new calibration are current. The my truck wont start any more. First code. P1260. So I try and clear codes and go in to PATS and reprogram the two keys and the now the code B1213 pops up. I have tryed doing the as built data and checked all fuses. I even bought Two new keys thinking one key might be bad. but that didn't work either. Any ideas?
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Old 01-31-2013, 08:11 AM
 
 
 
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