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Ron
Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 23001
Experience:  23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
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How do you unbrick a ford powerstroke 6.4 PCM with a VCM2

Customer Question

how do you unbrick a ford powerstroke 6.4 PCM with a VCM2
Submitted: 1 year ago.
Category: Ford
Expert:  Scott W. replied 1 year ago.
Hello my name is Scott
Expert:  Scott W. replied 1 year ago.
What do you mean "unbrick"
Customer: replied 1 year ago.
un-lock.. PCM isn't communicating.. It's turned into a brick...
Expert:  Scott W. replied 1 year ago.
Does the vehicle run?
Customer: replied 1 year ago.
not any more.. sorry.. keep going out and looking at the connections..I get 1.1 ohms resistance between terminal 6 on the DLC and 34 on the PCM.. seems a bit high. beginning to think there might be a problem in the can buss system..
I wish I could force the PCM to communicate with the VCM2
Customer: replied 1 year ago.
Ok, I guess I am on my own.. going to have to buy the customer a new PCM.. Oh well just money right?
Expert:  Scott W. replied 1 year ago.
What year is the 6.4? F250?
Customer: replied 1 year ago.
2008, f250 larriet.. loaded with all the goodies.. the current PCM 12A650 CJH
Customer: replied 1 year ago.
should I say 12A650 JFZ7 (CJH)
Expert:  Scott W. replied 1 year ago.
See if you have VREF voltage at one of the sensors like the EBP or EGR valve, should be between 4-6 volts with key on. Go to the green with violet, to green with white wires.