Programming Reman PCM

Steve Diagnostician Heath, Ohio Posted   Latest   Edited  
Question
Programming
2008 Lincoln MKZ 3.5L (T) 6-spd (6F)
U1900

Hi everyone. After programming this Lincoln MKZ, the trac light remained on. No codes. After running a self test in ABS, got a u1900 code. There are no additional finishing procedures after programming. None on the Ford programming site or scan tool menu. I am a mobile business, and the shop is sure the light was not on before. This shop is a regular good customer and is almost positive that it was not on before. I even performed the as built method a second time. No joy. 

Has anyone ran into a glitch like this before on a Ford? I have been doing my mobile since 1998. Have programmed numerous Fords. Any tips would be appreciated. Thanks Steve.

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Brian Diagnostician
Seneca, South Carolina
Brian
 

I assume the reman PCM had a VIN already in it, or did they reman your PCM? Depending on the year model, (adding this info will help everyone who wants to help) and using the IDS you can leave the key off during the PCM identification portion of the program all the while telling the IDS that the key IS ON. After the 4th or 5th attempt to ID it will allow you to enter a VIN manually, then you

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Steve Diagnostician
Heath, Ohio
Steve
 

Brian are you referring to the procedure where you dont allow the website to recognize the vehicle so that one can manually program the pcm?

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Michael Mobile Technician
Clinton, Utah
Michael
   

A tool I use often is called Forscan. It will allow you to manually change the As Built files. If a module became corrupted, you can correct the coding. Many Ford modules contain the VIN data within the As Built. You can determine if the VIN is embedded by using a HEX converter. You may want to go through the ABS reset process and see what that does. Let us know what you come up

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Steve Diagnostician
Heath, Ohio
Steve
 

Michael this sounds like an interesting tool. I will look into it. Thanks for the tip.

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David Technical Support Specialist
Ann Arbor, Michigan
David
 

U1900 located in the ABS module points to a CAN bus fault, (according to Ford Service info). Can the code be cleared or when clearing the code does it immediately come back on the next key cycle? If the codes resets, be sure there are no CAN bus issues.

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Steve Diagnostician
Heath, Ohio
Steve
 

David, for now I am going on the assumption that the problem was not there before programming. If there is something I am missing on linking the abs and pcm together thats what I am trying to find out. If not, then perhaps the shop missed this one as far as the light being on before. Then they will have to invest in some diagnostics on my part.

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Chris Technical Support Specialist
Commack, New York
Chris
   

U1900 refers to can bus fault. Check all modules for dtc’s as a missing network message from another module may trigger can faults. I have found that as a best practice to program all reman ford pcm’s Not supplied from the dealer with the key off tear tag programming process: Turn the key off, start a new session, when it states there is no communication to the pcm would you like to retry

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Chris Technical Support Specialist
Commack, New York
Chris
 

I attached some screen shots from a vehicle this morning. Hope this helps.

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Steve Diagnostician
Heath, Ohio
Steve
 

Hi Chris. I applied your procedure. It worked. Thank you very much. I have used as built data on occasion. But I have not used the "update special function" and applied a ' 53061 code before. What exactly is this code? Again thank you for your quick responses.

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Chris Technical Support Specialist
Commack, New York
Chris
 

This code makes IDS or FJDS ignore the as built information currently in the module and forces as built entry.

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John Owner
Medford, New York
John
 

Steve, I have ran into several times over the years with these vehicles MKZ/Fusion, etc. I would assume you were replacing PCM for the vaunted COP issue? Was this a Ford PCM or aftermarket unit? I have tried numerous ways to solve this including many of the great suggestions already talked about. The only viable answer I have come up with is another PCM. I have never had this issue with a

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