Ford Escape 2005 PCM/ECM issues
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Joined: Jun 2012
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Ford Escape 2005 PCM/ECM issues
Good day, I come here again because I have a question about changing the PCM / ECM on a 2005 ford escape (3.0 liter, 6-cylinder), it is now throwing errors on all of its coils, which BTW were changed a few days ago, I took it to the mechanic who removed the current PCM / ECM, the part number is: 5L8A-12A650-LH.
I read out there that this computer is the cause of failures, so replacing it with a similar one would be like extending the problem,
So I make three questions:
1) Have any of you an official Ford document that says which newer ford part number replaces this defective one?
2) If not, is there a website where I can chat with a ford specialist and ask for this?
3) If either of the questions above are not possible, which part number can I use to replace the defective one without risk of damage again?
I read about the LH is the main cause of this issue Here...
Thank you guys very much!
I read out there that this computer is the cause of failures, so replacing it with a similar one would be like extending the problem,
So I make three questions:
1) Have any of you an official Ford document that says which newer ford part number replaces this defective one?
2) If not, is there a website where I can chat with a ford specialist and ask for this?
3) If either of the questions above are not possible, which part number can I use to replace the defective one without risk of damage again?
I read about the LH is the main cause of this issue Here...
Thank you guys very much!
Senior User
Joined: Aug 2013
Posts: 465
Likes: 21
The problem is with the spark plugs failing the cop coils and the then back feeding to pcm. A junkyard pcm will be ok if its not ruined already. you must put the latest level motorcraft plug in first!
FORD:
2005-2006 EscapeMERCURY:
2005-2006 Mariner
This article supersedes TSB 09-2-6 to add a production fix date, update the Service Procedure, Part List and Service Labor Time Standards.ISSUE:
Some 2005-2006 Escape and Mariner vehicles built on or before 10/3/2005, equipped with a 3.0L engine may exhibit a malfunction indicator lamp (MIL) on with two or more diagnostic trouble codes (DTCs) for coil on plug (COP) primary circuit faults (P0351 through P0356). This may be due to the COP and powertrain control module (PCM) reacting to radio frequency interference from the spark plugs.
ACTION:
Follow the Service Procedure to correct the condition.
SERVICE PROCEDURE
PART NUMBERPART NAME2M2Z-12029-ACIgnition Coil Asy5L8Z-12A650-AADPCM (2005 MY Built 8/2/2004 and Later)5L8Z-12A650-LHPCM (2005 MY)
FORD:
2005-2006 EscapeMERCURY:
2005-2006 Mariner
This article supersedes TSB 09-2-6 to add a production fix date, update the Service Procedure, Part List and Service Labor Time Standards.ISSUE:
Some 2005-2006 Escape and Mariner vehicles built on or before 10/3/2005, equipped with a 3.0L engine may exhibit a malfunction indicator lamp (MIL) on with two or more diagnostic trouble codes (DTCs) for coil on plug (COP) primary circuit faults (P0351 through P0356). This may be due to the COP and powertrain control module (PCM) reacting to radio frequency interference from the spark plugs.
ACTION:
Follow the Service Procedure to correct the condition.
SERVICE PROCEDURE
- Check for DTC's stored in the PCM.
- If codes P0351 through P0356 codes are stored in the PCM continue to Step 2.
- If codes are present other than P0351 through P0356, do not continue with this article. Refer to the Powertrain Control/Emissions Diagnosis (PC/ED) manual for normal diagnostic.
- Replace all six (6) COPs. Refer to Workshop Manual (WSM), Section 303-01B.
- Perform a PCM internal coil driver functionality test by running the Oscilloscope Escape PCM Driver Test (available on Integrated Diagnostic System (IDS) version B58 or later).
- Using IDS, select:
- Toolbox.
- Oscilloscope tools.
- Escape PCM Driver Test - follow on screen instructions.
NOTE:THE OSCILLOSCOPE TEST TO CHECK PCM INTERNAL COIL DRIVER FUNCTIONALITY MUST BE PERFORMED PRIOR TO REPLACING THE PCM.
- If the coil driver functionally test fails, replace the PCM. Refer to WSM, Section 303-14B.
PART NUMBERPART NAME2M2Z-12029-ACIgnition Coil Asy5L8Z-12A650-AADPCM (2005 MY Built 8/2/2004 and Later)5L8Z-12A650-LHPCM (2005 MY)
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