FICM Help - Ford Powerstroke Diesel Forum

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post #1 of 17 Old 02-20-2011, 12:58 PM Thread Starter
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FICM Help

Ok so my insight was showing the famous FICM code so I decided to check my voltage today. With the key in on my lowest reading was 47.6V...now here is my question. Do I need to check it with the engine running? I have seen people say yes and no.

If I dont need to then what reason is there that I am still showing this code but by FICM is fine?

Thanks in advance
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post #2 of 17 Old 02-20-2011, 01:05 PM
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Normally I would think 47.6 KOEO is good enough, but since you're having issues I would think measuring KOER would be prudent. As for your other question, the cold/defective soldier joints is not the only way a FICM can/does fail.

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post #3 of 17 Old 02-20-2011, 01:14 PM Thread Starter
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Originally Posted by RatherBNtheWoods View Post
Normally I would think 47.6 KOEO is good enough, but since you're having issues I would think measuring KOER would be prudent. As for your other question, the cold/defective soldier joints is not the only way a FICM can/does fail.
I will check and report back. I am showing no signs of a bad FICM other then the dtc...thats why I am checking this. If I am showing the proper voltage shouldnt it be doing its job?
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post #4 of 17 Old 02-20-2011, 02:07 PM
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You need to check it KOEO and while cranking (disable glow plug module). Anything below 45V is a bad FICM but as previously posted just because it shows correct voltage doesn't necessarily mean it isn't junk. What code/codes are you showing?

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post #5 of 17 Old 02-20-2011, 02:14 PM
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+1 to checking while cranking, mine was 48 with the key on, and dropped to 28 while cranking so i replaced it and she starts good as new


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post #6 of 17 Old 02-20-2011, 02:30 PM
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there is no reason for you to flag that code with the ficm being okay. replace it before you get stranded somewhere

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post #7 of 17 Old 02-20-2011, 02:39 PM
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seen this yesterday. might help they have a good video on it

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http://circuitboardmedics.com/?page_id=312

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post #8 of 17 Old 02-20-2011, 04:42 PM Thread Starter
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Ok well I was by myself so I couldnt check cranking but running it dropped to 37. Im going to ford to see if I cant get it under warranty still.
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post #9 of 17 Old 02-20-2011, 05:16 PM
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they'll probably just give you a half shell. entire ficm replacement requires prior approval now.
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post #10 of 17 Old 02-20-2011, 05:28 PM
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I just sent my FICM off to circuit board medics yesterday. I was getting a reading like 25 amps with the key on and only like 10 while cranking. The problem issue I have is that when we took the FICM out we noticed that the center plug underneath was unplugged. I got really excited thinking maybe that was my issue. We plugged it back in and tried again. still no start so we finally decided that the plug must have just come loose while we were trying to get the FICM out. IM REALLLLLYYYY hoping the FICM is my problem otherwise Im out of ideas and Im going to have to tow it to the shop.
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