Master Reset with Battery Disconnect

[haze10]

I read that disconnecting the negative terminal for 5 hours or more will do a master reset. I need to clear some ACM codes. Anyone know if this would work. Code is ACM B1A04

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[stevj]

What is this ACM of which you speak?

Steve

 

[MakinDoForNow]

What is this ACM of which you speak?

Steve

I found this on a search???
What are the Possible Causes of the DTC B1A04 Ford?
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.

• Blown Audio Fuse
• Faulty Speaker
• Speaker harness is open or shorted
• Speaker circuit poor electrical connection
• Faulty Audio amplifier
• Faulty Subwoofer amplifier
• Faulty Audio Control Module (ACM)

 

[haze10]

ACM is Audio Control Module.
I tried to change out the dash speaker on my B&O system and apparantely disconnecting the OEM speaker was detected as an 'Open Circuit' and shut down that channel. Code is ACM B1A04

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