Ford PCM programming unsuccessful

Joe Diagnostician Texas Posted   Latest   Edited   Bounty  
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Programming
2018 Ford F-350 Super Duty XL 6.7L (T) 6-spd (6R100) — 1FT8W3BT8JEC77915

I have this 2018 ford f-350 Vin #1FT8W3BT8JEC77915 that has been in the shop for two months. This vehicle came in with an engine reduced message in the instrument cluster I scanned the vehicle for DTC's and had faults for the APP sensor 2 and fuel pump control module along with other codes stored in the PCM. I hooked an oscilloscope up to the app signal and while driving the truck the signal would drop out which lead me to the C1232B connector at the PCM when I went to back probe the signals at the PCM connector I heard some relays click in the Battery Junction Box as I moved the connector so I disconnected the connector from the PCM to perform a visual on the terminals I then noticed the terminal locking clip was not seated properly and had pulled out when I removed the connector I attempted to properly seat the locking piece but it would not seat I then noticed the male terminals at the PCM were bent I suspect someone was playing with this truck and forced the connector back on bending some of the male pins I tried straightening them out but some them broke off so I condemned the PCM and replaced the C1232B connector. when programming this PCM I get to where the tool is gathering data over the internet network once it gets the data it prompts me to cycle the key on and off several times it then allows modules to shut down after this I get a communications failure every time I've tried to program it I am using IDS 122.06 I have also tried programming the PCM blank key off using the tear tag number after deleting the sessions under the c drive of the computer. I get a communications failure every time the same exact way I wish I could record a video walking you through the steps I am taking so that you can get a better understanding of what I have experienced I have verified powers and ground to the PCM loading Each with a headlight bulb all check good my communication wires for the high speed can also look normal I really need help this is a fleet truck and its been at the shop too damn long what am I missing here the truck was running when it came in. does the PCM need to be programmed to establish communication with it? Thank you 

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Taylor Owner
California
Taylor Default
 

Could you post a picture of what screen your on when it says the communication failure. I remember having a 2019 Lincoln giving me weird messages been a while dont remember exactly. Also certain parts of programming online search for vsp/lsid info if the credentials are linked to account it will kick you out and give you an error message. Last but not least might want to update ids to 123.03 is…

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Joe Diagnostician
Texas
Joe Default
 

Yes I have the picture. I’ll try updating the tomorrow thank you I hope it works!

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Caleb Diagnostician
Indiana
Caleb Default
 

Is the PCM new from dealer? Correct part #??

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Joe Diagnostician
Texas
Joe Default
 

yes, this Pcm is from the dealer and it is the correct part number this is the second one I have tried from the dealer because I suspected the same thing.

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Matthew Owner/Technician
Oregon
Matthew Default
 

Any chance of any other terminals are bad at other connectors causing a failure? Perhaps a pin broke off and is the female side of the connector? It's a long shot but when someone has been messing with terminals it doesn't hurt to check.

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Joe Diagnostician
Texas
Joe Default
 

I suspected the same thing so I performed a visual inspection on the other two connectors with no signs of damage. I also unplugged both of them and reattempted programming with just the C1232B connected which are the power, grounds, and communication wires for the PCM with no success I had a similar ford 6.7 with a no comm issue caused by a shorted injector I disconnected the harness at the PCM…

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Nate Diagnostician
California
Nate Default
   

You shouldn't need to program anything to get comms. I'd get a break out box on the dlc and check resistance on the comms circuit(I believe it's 60ohms for a good circuit but double check that) Also check signal with your lab scope make sure you have a mirror image of the high/low CAN signal at dlc and pcm. It sounds to me like a electrical issue and not a problem with the pcm. Also, you can…

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Chris Technical Support Specialist
New York
Chris Default
 

High impedance test equipment for load testing powers and grounds?

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Timothy Owner/Technician
Wisconsin
Timothy Default
 

Should not have to program it to see it on the bus and talk to it…some low-end modules (interior MS bus) will not comm until programmed, but I've never seen it on a PCM for Ford. If you've got no comm when plugged in, you need to fix that first, before an attempt is made to program it.

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Chris Technical Support Specialist
New York
Chris Default
 

Just out of left field, but make sure your Jbox has the latest drivers.

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Walter Mobile Technician
Florida
Walter Default
 

I would do pin drag test on all female terminals connecting to the PCM if you haven't do so yet. Have you also verified that all the circuits on connector C1232B have been properly indexed when the connector was replaced?

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Jose Technician
Illinois
Jose Default
 

Are you able to communicate with the pcm using a scan tool? Do you have any trouble codes from other modules referring to loss of communication with the pcm? You should have communication with the pcm with a fault code for programing needed or something similar.

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Matthew Owner/Technician
Oregon
Matthew Default
 

What's your J2534 device? Is it a VCM 2? I got called once to program one than another mobile programmer couldn't do. It was a blank PCM from Ford and there was no communication unless I used ids with a vcm2. Then it identified it as blank with no software.

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Taylor Owner
California
Taylor Default
 

I agree I had to program a bcm that other programmer could not do with j box cause it would not pull the vin being that it was blank vcm unfortunately the only way to go with Ford

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Richard Mechanic
Illinois
Richard Default
 

I would also suggest looking at the gateway module/DLC . I have ran into a few trucks that were tuned and somehow corrupted the gateway module. Would let me get DTC info and data but would loose communication when trying to reflash.

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Rusty Owner/Technician
Massachusetts
Rusty Default
 

IDS has a network test function where it shows you all the modules on its networks and shows you their communication status. I’d look at that.

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Kerry Mobile Technician
Ohio
Kerry Default
 

Joe, Were you using IDS in the diagnostic phase, or a different scanner? I had something similar happen on a late model E450 new PCM replacement last month and it turned out to be a DLC pin tension problem! My scanner swiped the DLC pins fine but my VCM wasn't as lucky. Directly probing the DLC for meter and Pico measurements were fine because I had good direct contact and/or breakout box had it…

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Joe Diagnostician
Texas
Joe Default
 

yes I have the ids 123.03 with the VCM 2 I have posted a video walking You through the process and when the error message occurs please check it out thank you.

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Ronny Owner
Texas
Ronny Default
 

FDRS which if I recall is for 2018 and up models. You might try that.

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Miguel Mechanic
Mexico
Miguel Default
 

I had the same scenario, i found the “PCM WAKE” cable from BCM lacking 12 volts, had to replace bcm, was a 2015 6.2 v8 f350.

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Joe Diagnostician
Texas
Joe Default
 

Yes I checked the the pcm wake up signal coming from the the bcm i have source voltage but I may be loosing it while programming process just not sure Thank you for your time

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Mike Instructor
California
Mike Default
 

Sorry, I don't have time to sit through the whole video. That said, I noticed it looked like you started to enter the Tear Tag number and then stopped and went over to your Pico. Did you ever enter the Tear Tag number and proceed from there? What happened?

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Joe Diagnostician
Texas
Joe Default
 

Hello mike yes I entered the tear tag I wasn’t sure I entered it right i had the numbers mixed up thank you for your time

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Joe Owner
Ohio
Joe Default
 

Hey Joe, Just throwing this out there. By chance is the DLC piggy backed to another DLC? I programmed a Ford Fleet Truck for a shop about 2 months ago and had a very similar issue. What I’m asking is do you see any other harness coming off the DLC. The truck I dealt with and had issues with had a piggy backed DLC to DLC bypass (best way I can explain it) that ran to some type of fuel…

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Joe Diagnostician
Texas
Joe Default
 

Hey joe , I watched your J2534 programming video on scannwe danner premium a few years ago great class. yes most of all these fleet truck come in with another connector piggy backed I’ve disconnected it and re attempted programming I still get the same error thank for your time and help.

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Joe Diagnostician
Texas
Joe Delay
 

I have been unsuccessful in programming this PCM due to the nature of the Flat-Rate system I have put my focus towards making a living i stay an hour or so after work to try and Program this vehicle and get it back on the road but unfortunately I haven’t been successful but I haven’t given up Yet.

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William Technician
West Virginia
William Default
   

Let me start by saying I am not a Ford guy, but I noticed the can bus was fine when you started the video, then when you attempt to program the bias voltage changes. Again I don't know about Ford but on GM that much change in Bias Voltage will cause a no comm and bring the whole bus down. I would troubleshoot that process with the good old unplug it test. Start with the easy stuff. If the can is…

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Joe Diagnostician
Texas
Joe Default
 

Hello William, thank you for the help I’ve triple checked the power,grounds and communication lines also the ispr and PCM wake up while attempting programming every circuit looks normal thank you for your time and help.

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Andrew Mechanic
Michigan
Andrew Default
 

I am very new to programming so take that for what it is worth but, is it possible to flash this on the bench with a break out box? This would eliminate the possibility of something on the truck causing an issue.

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Timothy Owner/Technician
Georgia
Timothy Default
 

once it gets the data it prompts me to cycle the key on and off several times Hi Joe, Would there any possibility of disregarding the key on/off cycles and leave the key on during the programming steps to see if that would help. I have had to do that sometimes … not sure if it was Ford or GM. Also proper pin/wire placement in your replacement connector would be important … but you probably…

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Glenn Owner/Technician
Texas
Glenn Default
 

Hi Joe, Knowing Ford the way I do, you replaced the C1232B connector, did you just splice in a connector with wire pigtails? If so it is critical to confirm the exact wire pin locations and color, number on the existing harness wires. Ford uses a very meticulous system and it is easy to get wires mixed up. Be sure if you are viewing from the ECM side of the connector or not. I suspect you have…

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Joe Diagnostician
Texas
Joe Default
 

Hello glenn, Being on flat rate it was tempting to cut and splice however I couldn’t come to grips with it so I replaced the entire harness thank you for your time.

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Keith Diagnostician
Oklahoma
Keith Default
   

An 2018 with the 6.7 will attempt to program TCM, PM_Sensor, GPCM and the PCM. If the truck is deleted it will do this as it checks the PM_Sensor module and GPCM first. Look to see it they are both still installed. If not, and the truck is deleted, it will not program with IDS until those are put back in. This is a common issue we deal with weekly here in Oklahoma were we do not have emissions…

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Andrew Mechanic
Michigan
Andrew Default
 

This is something I worry about as these trucks age…. Things will definitely be interesting.

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Keith Diagnostician
Oklahoma
Keith Default
 

We deal with it at least once a week.

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Joe Diagnostician
Texas
Joe Default
 

Hello Keith great piece of information this truck has been deleted it has thrown me for a loop for failure to perform a visual to see if the after treatment system has been removed which it has! so I will check for those modules thank you For your time and help.

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Jim Owner/Technician
Ohio
Jim Default
 

You mentioned that the vehicle ran before. Therefore I think we have to assume the comm issue was created recently. I would carefully check all of the wires on that new PCM connector.

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Joe Diagnostician
Texas
Joe Default
 

Yes I keep running that through my head but I’ve checked it multiple times to be sure I don’t see any faults in the power,ground and communication lines during communication loss.

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Michael Owner/Technician
Texas
Michael Default
 

Do a network test. Even a blank PCM will communicate on a network test. No cumminication, check power, ground and communication lines.

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Stephen Owner
Massachusetts
Stephen Default
 

Do a network ping, Modules off line may have to be manually powered up before programming. BCM may send a wake up call, new blanks will not respond. Look to see who is no comm. May have to energize relay manually, then programming will go forward.

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Joe Diagnostician
Texas
Joe Resolution
 

Hello, I want to thank every single one of you for taking the time to assist me with this problem child. I’d like to give a big thank you to Keith Perkins for leading me in the right direction. I had to install two Nox sensor modules both upstream and downstream Since this truck has been deleted the Def pump and module were still installed as-well as the PM Sensor. When I replaced the NOX…

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