FICM question - Ford Powerstroke Diesel Forum
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post #1 of 5 Old 11-25-2009, 08:21 PM Thread Starter
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FICM question

i have a 2004 6.0L and i have had a ficm low suplyvoltage code for a while now i was ust wondering if there is a way to test the voltage and where if there is. Or maybe if there is common things that cause this problem or if my ficm is dieing..... thanks mike.
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post #2 of 5 Old 11-26-2009, 07:37 AM
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m-chan 68 had an exellent posting listing the FICM voltages but I can;t seem to find it at the moment. Initial supply voltage is vechile sysstem voltage 12vlt basicaly.
If your not getting that I would suspect corrision or a wire chafed and just a couple of strands touching ground or another circuit drawing away some of the voltage.
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post #3 of 5 Old 11-26-2009, 05:14 PM
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how old are your batteries might wont to check them also
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post #4 of 5 Old 12-01-2009, 04:36 PM Thread Starter
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batteries are pretty new
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post #5 of 5 Old 12-01-2009, 09:04 PM
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need a minum of 42 volts to fire off the ficm module . 10.5 volts into the ficm is required .
inless you have a decent scan too it monitor pid data it's hard to verifie .
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