how do u check ur ficm? - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 02-17-2012, 12:20 PM Thread Starter
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how do u check ur ficm?

can someone tell me how to check my ficm

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post #2 of 3 Old 02-17-2012, 01:42 PM
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Ham Radio Man has several replies to FICM posts with the procedure.


Lord I shall lead them to the water but I will not try to make them drink
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post #3 of 3 Old 02-17-2012, 03:02 PM
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Glad you asked, here ya go. GOOD LUCK

Q: HOW DO I TEST FICM VOLTAGE?



A:***FICM voltage tests should be performed with the engine oil COLD (ie, close to ambient air temperature). This will force the FICM into it's inductive heating strategy, which will give you a worse case scenario/voltage reading. If the engine has been run (within 5-6 hours of this test), then the warm engine oil may not give you an accurate FICM voltage.

On all 2003-2007 Ford 6.0L Power Stroke diesel engines you will find the FICM bolted to the drivers side valve cover...you may need to unbolt the coolant reservoir from the 'cowl' so that you can get your arms/hands back there to work on the FICM.You don't need to drain the coolant...just unbolt the bracket that hold the coolant reservoir, and gently move it as far out of your way as possible. Be careful, as there is a plastic coolant connector that can be cracked if the coolant jug is handled forcefully.


On the top of the FICM, you will see a diamond/oval shaped metal plate...remove the two screws from that plate (Torx#20).


under that plate you will either see 7 "lugs"...or 4 "lugs" (depending on the year of the truck)...


if you have a "7 lug FICM"...you want to put one lead from your multimeter onto the upper left "lug"...and the other multimeter probe to ground (bare spot on the cylinder head, alternator bracket, negative battery terminal, etc).If you have a "4 lug FICM"...you will want to check the lug on the right (closest to the drivers side fender).


be careful NOT to lean the probe on the FICM lug...over onto the aluminum case...you might let the smoke out, LOL...


Have someone turn the key to the 'on' position (don't crank it yet)...and see what your FICM voltage is. It should be >46volts.


Next have someone crank the engine...and see what the FICM voltage is while cranking...again..should be >46volts.


Go ahead and start the engine...and see what the voltage is while idling.


If the FICM voltage drops below 46 volts...then it is "bad"... SWAMPSDIESEL
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