Injector or FICM
Fleet Owner
Joined: Nov 2003
Posts: 27,792
Likes: 3,542
Only FORScan full version requires a laptop. FORSCan Lite can be put on your i-phone/device. ForScan Lite is fine.
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Mountain Pass
Joined: Jul 2007
Posts: 235
Likes: 4
From: north carolina
My laptop should be coming in today. I have the adapter for the connector under the dash. I should have the forscan software loaded tonight.
This is the first time I have used forscan so any pointers would be welcome. I am troubleshooting a misfire of one or more of the injectors. What would I see on the froscan tool?
This is the first time I have used forscan so any pointers would be welcome. I am troubleshooting a misfire of one or more of the injectors. What would I see on the froscan tool?
Token Redneck
Joined: Jun 2007
Posts: 9,299
Likes: 308
From: Breckenridge, TX
Scan it BEFORE you retune it. At least to get the codes. Pretty sure my SCT clears KAM as part of the reprogram cycle so I would lose them right?
Blade is correct to do active testing with a stock tune if possible, but IMO always scan it first in the state it's having the problem in to get a baseline.
Blade is correct to do active testing with a stock tune if possible, but IMO always scan it first in the state it's having the problem in to get a baseline.
Last edited by texastech_diesel; Feb 23, 2026 at 10:40 AM.
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Mountain Pass
Joined: Jul 2007
Posts: 235
Likes: 4
From: north carolina
I plugged everything in. but there seems to be no connection to the truck. I downloaded the Forscan for windows, installed it. I plugged the connector in but get nothing. Am I missing something?
The Struggle Bus¯\_(ツ)_/¯
Joined: Jan 2022
Posts: 657
Likes: 285
You don't need a paid FORScan key to pull codes. That's only needed for some programming functions. You should be able to just plug the cable into the OBD-II port, turn vehicle key to on, check that the light on the cable turns on, press the 'Connect to Vehicle' button on the lower left, see a splash screen for your vehicle, then press the 'Read Diagnotic Troubleshooting Codes (DTC)' button on the left.
Last edited by 4Kids; Feb 24, 2026 at 05:32 AM.
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Mountain Pass
Joined: Jul 2007
Posts: 235
Likes: 4
From: north carolina
Well after putting in a new FICM I get the same diagnostic message about the FICM. So I am concluding the Forscan is showing a false fail. The #6 injector will be the next to get checked.
BTW, Does the Forscan tool have a buzz test?
BTW, Does the Forscan tool have a buzz test?
Fleet Owner
Joined: Nov 2003
Posts: 27,792
Likes: 3,542
The diagnostic message is from the PCM. FORScan just reports what the PCM is telling it when it pertains to codes.
A single injector code is typically not a FICM issue, but it has happened, especially on the early 7 screw FICMs that had individual drivers.
A single injector code is typically not a FICM issue, but it has happened, especially on the early 7 screw FICMs that had individual drivers.
Last edited by bismic; Mar 11, 2026 at 02:09 PM.