Detailed FICM Repair Procedure - Diesel Forum

DrQuad · 12-09-2009, 05:33 PM

Well I finally got around to writing a detailed FICM check and repair.
FICM pictures by DrQuad - Photobucket

HeavyAssault · 12-09-2009, 07:03 PM

I think the pictures aren't small enough........

DrQuad · 12-09-2009, 10:25 PM

The small pics. are to save download time.
Here is the PDF

ace-tron · 12-09-2009, 10:31 PM

Quote:

Originally Posted by DrQuad

Well I finally got around to writing a detailed FICM check and repair.
FICM pictures by DrQuad - Photobucket

Do these compromised solder joints affect cold starts, fuel economy, etc.?

DrQuad · 12-09-2009, 10:34 PM

Cold starts for sure.

2Tight · 12-10-2009, 10:17 AM

Nice write-up. Are there any special follow-up procedures or tools needed after it's re-installed?

DrQuad · 12-10-2009, 06:10 PM

None that I used.

VTFireftr · 12-11-2009, 12:06 PM

Great Job DrQuad!

And it couldn't have come at a better time. My dealer just reflashed my computer and told me my FICM voltage was low.

I think I know what I'll be doing this weekend!

Happy Holidays!

Marc

rbrodder · 12-14-2009, 02:31 PM

Outstanding article, Should save the average capable person a lot of money from going to the dealers... Simple fix with the details.....

HBO1 · 01-18-2010, 04:06 PM

DrQuad......THANK YOU for this!!!

I LOVE YOU MAN!!!!

herc69 · 06-04-2010, 02:01 PM

how do you check the voltage does the ficm still have to be hooked up to the truck when you check it or do you check it out of the truck

BIGDOGDIESEL · 06-15-2010, 04:43 PM

Has anyone tried this. Mine has 34 volts when buzzing and 47 the rest of the time. BAD?

quietman · 06-21-2010, 11:14 AM

My 2005 Ex has the classic symptoms. I just check it and when my wife first turned the key to run, I got 34 volts for a few seconds, then it went to 48 and stayed there.

I had her start it and the voltage then read 45 while running.

so.....?

john roe
www.roenation.com

Sotoman · 07-28-2010, 02:55 AM

Quick question on the first page of your writeup - 4 pin FICM check.

It says to check the voltage with the key on, DO NOT START TRUCK. If I do this, my voltage is 48v, and the check procedure passes successfully.

The problem is that if I do start the truck my voltage drops down to 27v and stays there.

Since this is not mentioned in the check, I was wondering if I still need to repair my unit. I have read elsewhere that it also needs to be above 45V while the truck is running.

Just wanted to make sure before I tore into it.

Thanks.

Paul H · 07-28-2010, 05:53 AM

That is correct the voltage should be above 45 volts at all times, if not your FICM has a problem.