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Discussion Starter · #1 ·
Guys, I’ve been chasing my tail with my truck for the last 2 months my #6 injector will not fire. I’ve replaced it with 3 different ones, I’ve replaced the harness and the mother board in the ficm. Only thing I haven’t replaced is the entire FICM box. It’s a 03 6.0. Thoughts?
 

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Will it buzz when you do the buzz test?
 

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It keeps throwing a injector circuit high code so i don’t think it’s an oil issue I could be wrong though
Also have you swapped a known good injector in? I’m sure you have. Also have you checked ficm voltage. If it’s off that might make the PCM think there’s an issue there.


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If you do the Buzz Test, and the #6 injector doesn't buss, then you can hook up the #4 or #8 connector to it and see if it buzzes.

If it does, then the issue is probably the FICM (logic side).

ForScan Lite (downloaded to a smart phone for $6) can do the Buzz Test. You need a $35 adapter (recommend BAFX brand of OBDII adapter, BlueTooth for Android and WiFi for iOS).
 

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Discussion Starter · #7 ·
If you do the Buzz Test, and the #6 injector doesn't buss, then you can hook up the #4 or #8 connector to it and see if it buzzes.

If it does, then the issue is probably the FICM (logic side).

ForScan Lite (downloaded to a smart phone for $6) can do the Buzz Test. You need a $35 adapter (recommend BAFX brand of OBDII adapter, BlueTooth for Android and WiFi for iOS).
it will not pass buzz test throws injector 6 circuit high code during test
 

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I agree with @speedrcr78

Or, you could have it repaired and upgraded at CircuitBoardMedics.com or FICMRepair.com for less than a new one.
 

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You get a better product for less $$ by repairing and upgrading than buying the same old "marginal" unit ............... Of course you have to wait a bit longer for it.
 
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