FICM Voltage - Diesel Forum - TheDieselStop.com
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6.0L Power Stroke Engine and Drivetrain Discussion of the 6.0L Power Stroke diesel engine and drivetrain in the 2003-Up Super Duties and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.0L Power Stroke engine.

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Old 08-18-2010, 05:52 PM   #1 (permalink)
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FICM Voltage

I just got my new Auto Enginuity cable today. The check engine light is not on, and there are no FICM codes. Tht AE Live Data Meter says that my FICM voltage is 47.5V, is that too low? The check engine light is not on, and there are no FICM codes.
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Old 08-18-2010, 06:36 PM   #2 (permalink)
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Its low when its well below 48V which is stock.
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Old 08-18-2010, 07:38 PM   #3 (permalink)
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I took the truck for a ride, most of the time the voltage was at 47.5V but several times I saw it drop to 46.5V. When I have, I will have to take the FICM apart to check it out for the bad solder connections.
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Old 08-19-2010, 08:31 AM   #4 (permalink)
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Does it run rough or miss any? low on power or responce?

All would be considered a suspect FICM but 47 volts is not that alfull bad, some drop to 32 volts
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Old 08-19-2010, 11:08 AM   #5 (permalink)
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I think Ford spec is 45v or above. I would say that yours is fine.
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Old 08-19-2010, 04:06 PM   #6 (permalink)
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Last night I read on another board that Ford the spec is 45V. I am going to leave it alone for now, it sounds like it is ok. When I get some free time I may take it apart to check out the soldering, but that won't be anytime soon.
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