Theft light Problem

[BriansNSane]

Theft light is blinking but I have read enough to see that there is a pattern. blinks very fast for about a minute then subsides and starts a code cycle. not sure how many numbers the code is but it keeps repeating 1 and 6.I hope that I have now narrowed down the problem and just need to know what this code means.TY all

OK after finnaly finding it on the www 1:6 means faulty connection between Pats Module and EECV. Now the question is where the EECV is located.

I bought the car from a buddy that is fed up with it,cam broke and he had the repairs made but never could start it up cuz of this issue,he sold it to me and now I'm trying to get it running.didnt have this issue before cam failure so I would say the "boys" at the shop didnt plug the connector from the module to the eecv. so where is the eecv located and what does it look like?

 

[SHOZ123]

It's in the firewall above the glove box. Accessible from the engine compartment. There is a large 100+ wire connector on it.

 

[BriansNSane]

Ah-HAH I have located it with many than to SHOZ!! im having a very hard time trying to trace out the wires and establish why these 2 are not communicating!Are there any specific spots i should look for or could the eec itself be bad?Ive bout a replacement pats module in hopes that it wa the problem but it isnt.Door pad code will unlock the doors when entered.

 

[SHOZ123]

If the PCM is not the original one to the car it will do this. What year do you have? And what is the 4 digit catch code on the PCM?

 

[BriansNSane]

year model is 1996 and i'm not sure where to locate the 4 digit code number.theres a 5 digit number for the driver's side door pad.are we talking about the same module?the one i replaced is above the brake pedal and has a fuse box mounted next to it.

 

[SHOZ123]

PCM code is on the PCM. You should be able to see it if you look close enough.

 

[BriansNSane]

OK a little confused here.there seems to be 2 different possible modules i believe.one is behind the radio and the other above the brake pedal wich has a wireless coax cable on it.Wich one of these 2 am i looking for the 4 digit number on and where exactly can the code be found at on it? I'm a fairly hands on person,I'm just not seeing it i suppose.I just need a little clarification.

 

[SHOZ123]

The PCM is only visible from the engine compartment.

 

[BriansNSane]

wow I am freaking confused.Would you please elaborate a little for me.As I said I need Clarity.I thought the thing under the hood was the EEC-V and the thing I replaced inside of the car above the brake pedal was the PCM. Are the PCM and the EEC-V one in the same and the thing with the wireless coaxial antenna above the brake pedal inside of the vehicle called something else?

This is exactly what the trouble code says.

"Faulty link between PATS module and EECV"

Wich 2 pieces are these?

 

[SHOZ123]

Powertrain Control Module is under the hood and the software in it is Electronic Engine Control V.

The Passive Anti Theft System includes many parts. The module under the dash with the antenna is called the Remote Anti-Theft Personality.

Anti-Theft System—Passive
The passive anti-theft system is a passive system that uses radio frequency identification technology to deter a driveaway theft. Passive means that it does not require any activity from the user.

During each vehicle start sequence, the ignition key identification code is requested by the vehicle protection anti-theft electronics.
If the key's ID code has been programmed into the system, the vehicle powertrain control module (PCM) is allowed to operate, and enables vehicle to start.
If the key's ID code is not programmed into the system, or if no encoded key is detected, then the vehicle powertrain control module (PCM) (12A650) is disabled.
The passive anti-theft system communicates the state of the security system to the powertrain control module via the multiplex communications network communication link. The PCM, based on the communications from the passive anti-theft system, will determine if the vehicle's engine will be enabled to start.


Components
The system is composed of the following components:

remote anti-theft personality (RAP) module (15KC02)
remote entry antenna
luggage compartment door lock tamper switch
anti-theft warning indicator (output)
door lock cylinder disarm/central lock switches (inputs)
hood switch (input)
liftgate interface module (station wagon only)
The following components already exist on the vehicle and are also used in the anti-theft system:

horn relay (output)
parking lamp (13200)
generic electronic module (GEM) (input and output)
starter relay
headlamp autolamp relay (output)
park lamp autolamp relay (output)
door lock relays
door ajar switches

 

[SHOZ123]

PINPOINT TEST A: NO COMMUNICATIONS WITH REMOTE ENTRY/REMOTE ANTI-THEFT PERSONALITY MODULE

A1 CHECK OUTPUT FUSE 23 (5A) FOR SHORT TO GROUND

Remove fuse 23 (5A) from fuse junction panel.
Using ohmmeter connected to good ground, measure resistance between output side (RH) pin of fuse 23 and ground.
Observe ohmmeter reading. Reading should start above 1M ohm and drop to less than 3K ohm steadily.
Does ohmmeter start above 1M ohm and drop to less than 3K ohm steadily?
Yes No
GO to A7 . GO to A2 .

A2 CHECK RESISTANCE
Set up as in A1 .
Observe ohmmeter reading.
Did ohmmeter read less than 10 ohms?
Yes No
GO to A3 . GO to A7 .

A3 CHECK GENERIC ELECTRONIC MODULE
Remove generic electronic module from fuse junction panel connector C1.
Disconnect and reconnect ohmmeter as in A1 .
Does ohmmeter read above 1M ohm? (May drop steadily to less than 3K ohm.
Yes No
REPLACE generic electronic module. RESTORE vehicle. REPEAT self test. GO to A4 .

A4 CHECK FUSE JUNCTION PANEL
Disconnect fuse junction panel connector C4.
Measure resistance between output side of fuse 23 and ground.
Is resistance less than 10K ohms?
Yes No
REPLACE fuse junction panel. RESTORE vehicle. REPEAT self test. RECONNECT GEM and fuse junction panel connector C4. GO to A5 if PATS equipped. GO to A6 if not PATS equipped.

A5 CHECK PATS MODULE
Disconnect PATS module connector.
Disconnect and reconnect ohmmeter as in A1 .
Does ohmmeter read above 1M ohm and drop steadily to less than 3K ohms?
Yes No
REPLACE PATS module. RESTORE vehicle. REPEAT self test. GO to A6 .

A6 CHECK RAP MODULE
Disconnect RAP module connector C2.
Disconnect and reconnect ohmmeter as in A1 .
Does ohmmeter read above 1 M ohm?
Yes No
REPLACE RAP module. RESTORE vehicle. REPEAT self test. SERVICE Circuit 1001 (W/Y) for short to ground. RESTORE vehicle. REPEAT self test.

A7 CHECK DEDICATED GROUND
Disconnect RAP module connector C2.
Using ohmmeter, measure resistance to ground of Pin C2-14, Circuit 570 (BK/W).
Is resistance 5 ohms or less?
Yes No
GO to A8 . SERVICE Circuit 570 (BK/W) for opens or high resistance. RESTORE vehicle. REPEAT self test.

A8 CHECK IGNITION RUN/ACCY INPUT
Disconnect RAP module connector C1.
Turn ignition switch to RUN.
Using voltmeter connected to good ground, measure voltage at Pin C1-25.
Is B+ present?
Yes No
GO to Section 18-04 , Pinpoint Test C for diagnostic communication Circuit 70 (LB/W) diagnosis. GO to A9 .

A9 CHECK FUSE JUNCTION PANEL FUSE 20 (5A)
Remove fuse junction panel fuse 20 (5A).
Measure resistance across fuse.
Is fuse OK?
Yes No
SERVICE Circuit 1002 (BK/PK) for open. RESTORE vehicle. REPEAT self test. SERVICE Circuit 1002 (BK/PK) for short to ground. REPLACE fuse 20 (5A). RESTORE vehicle. REPEAT self test.

 

[BriansNSane]

WoW! Now that is what I call Beyond Clarity! =) Many Thanx my SHO Bro! I'll start the troubleshooting process this afternoon as soon I get off of work.

 

[SHOZ123]

BTW, the GEM is on the back of the fuse box and the three plugs on the bottom of the fuse box are all for the GEM.

 

[BriansNSane]

Eevrything Checked out!! I was almost at a total loss until I stumbled across this on a Mustang website.http://www.allfordmustangs.com/forums/4-6l-tech/121965-p-t-s-issue-1996-a.html

EXACT same symptoms as mine!!! It wont read my keys and is flashing the 1:6 after everything checks out. So if by some chance my PCM is trash as well what do I do now? How do I test it? and If it's bad do I search for a new or used PCM? and if I find one will it require programing with the WDS 2000?I really would like to try all options before I take it to the dealership! Thank You for all your help thus far!

Oh yea I found a page with more in depth troubleshooting involving dtc's stored in the pcm. How would I retreive these "dtc" codes?

After even more research I have found that I may need to reprogram the pcm.It is my belief that either the pcm is damaged or the software inside(EEC-V) is corrupted. Howe would I go about reprogramming the pcm to eliminate that problem?

 

[BriansNSane]

Bump Bump!!! I'm on the verge of taking her to the dealership and seeing what the deal is. Personally I think the software is corrupt. We shall soon see.

 

[SHOZ123]

I'll give ya $500 for it.....

 

[BriansNSane]

I'm not quite sure what to make out of this comment.I don't think I like it to be honest with you.I thought this was a community of people helping each other not trying to scalp them out of their vehicles.I'm not sure what your intentions are but no thank you. Thank You up until this point.

 

[SHOZ123]

You missed my sarcasm.. Maybe there should be an not thanks button?

 

[BriansNSane]

Sorry for the lack of observation. I've had people try to swindle me before and is not a fun situation. I've talked to ford and it is 80 bucks to put on a computer and 200 to reprogram the pcm if its not damaged. 400 bucs for new pcm if its trash.The guy im taking it to is a friend of the family so he will be shooting me straight."crosses fingers" hopefully all goes well.