short to ground
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short to ground
so as i was driving home from work the check light came on pulled codes and got all the injectors short to ground and another for the ficm well check the ficm volt key on 48 v never dropped below 47 during cranking or running. its a 07 f250 2 wheel deal 6.0 with 119000 on it just wondering where to go from hear pull the harness or what.and there has been no loss of power working on the striction problem on the next oil change other than that its a beast.
Logistics Pro
Joined: Dec 2004
Posts: 4,138
Likes: 7
From: South Weber, Utah
so as i was driving home from work the check light came on pulled codes and got all the injectors short to ground and another for the ficm well check the ficm volt key on 48 v never dropped below 47 during cranking or running. its a 07 f250 2 wheel deal 6.0 with 119000 on it just wondering where to go from hear pull the harness or what.and there has been no loss of power working on the striction problem on the next oil change other than that its a beast.
Logistics Pro
Joined: Dec 2004
Posts: 4,138
Likes: 7
From: South Weber, Utah
The FICM can still be bad with 48 volts that is why specific codes would help but to have all 8 injectors throw codes makes the FICM suspect.
Lead Driver
Joined: Feb 2011
Posts: 8,241
Likes: 155
From: L.A. (Lower Alabama)
The FICM has two circuit boards inside, one is the power board, it's an amplifier that raises the battery voltage to 48v. The other is the logic side, it has a "chip" that talks/listens to the PCM and decides if, when, and for how long to apply the power supplied by the power board to the injectors. Because of the heat generated by the power board, especially if there a battery or charging system problem causing input voltage to be low, it is much more likely to fail than the logic board but the logic boards can and do fail sometimes with a perfectly good power board.
I was watching someting the other day and the presentor said you could sort of think of the FICM as the distributor in an old gasser. The logic side is like the points and point cam, rotor and cap, while the power side is like the coil and capacitor.
I was watching someting the other day and the presentor said you could sort of think of the FICM as the distributor in an old gasser. The logic side is like the points and point cam, rotor and cap, while the power side is like the coil and capacitor.
Cargo Master
Joined: Oct 2003
Posts: 2,833
Likes: 4
From: Jefferson, Iowa
Time for a ficm, the voltage is getting low at some point. My brothers truck came up with 3 high circuit codes a while back. We pulled the ficm and ohmed the wiring harness and it checked out fine, spool valves ohmed the same as the rest. The logic side of the ficm capped out. Ed at ficm repair.com got it fixed. He had the 3 high circuit codes and a 0611. The 0611 is pretty much a dead ficm.
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