ECU module programming guide using FDRS

[farmtruckman]

I’m reluctant to offer this as a suggestion because I’ve never reconfigured the GWM using FORScan, but if you can communicate with the GWM, you might be able to change the country code for just that module. If that’s the primary configuration error leading to the inability to access modules on other CANs, that could be a step in the right direction. Check with @rugedraw to see if this is safe before attempting it.

Thanks @JEB - the initial plan @rugedraw had was to update the country code is all 5 modules but we gave up on it when we saw only GWM online on FS.

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[HammaMan]

So if I understand you correctly - the suggestion is to use a 10amp battery charger that can charge up the battery to last 3 hours or so and when it starts going down, charge the battery again. Will the constant charging impact the battery in anyway compared to the dedicated power supply by CA PL 2320?

You don't need a constant supply, a battery charger is more than sufficient. Most chargers these days will automatically turn back on when the voltage drops. I recently did 2hrs worth of updates to a 24 5.0 F150 and though the charger I had connected was a 15 amp, it was off most of the time. Don't run your headlights or HVAC blower while doing updates. While I've got a bit more reserve capacity than most, the dealer left my truck on and programming for over 2hrs without a charger connected. It's just not a big deal on F150s.

Both FDRS and forscan give you a voltage reading, you don't need to be concerned until things get down below 11 volts. Only once you start to read 10.9v should you be looking for another vehicle and jumper cables. I've only seen below 12v w/out a charger connected.

 

[farmtruckman]

You don't need a constant supply, a battery charger is more than sufficient. Most chargers these days will automatically turn back on when the voltage drops. I recently did 2hrs worth of updates to a 24 5.0 F150 and though the charger I had connected was a 15 amp, it was off most of the time. Don't run your headlights or HVAC blower while doing updates. While I've got a bit more reserve capacity than most, the dealer left my truck on and programming for over 2hrs without a charger connected. It's just not a big deal on F150s.

Both FDRS and forscan give you a voltage reading, you don't need to be concerned until things get down below 11 volts. Only once you start to read 10.9v should you be looking for another vehicle and jumper cables. I've only seen below 12v w/out a charger connected.

Thanks for your input. I am not so well versed with electric stuff so appreciate your help. Will this be a good option to consider? https://amzn.eu/d/2a9wEoq

 

[Moe7]

just did all the recent updates to the tremor, apim took forever again, but do like the new load screen the ford logo looks cool

Any chance the IPMA update showed up for you?

 

[HammaMan]

Thanks for your input. I am not so well versed with electric stuff so appreciate your help. Will this be a good option to consider? https://amzn.eu/d/2a9wEoq

That on paper at least is more than capable of handling it. Can't speak for the brand itself, but it's more than enough power. I'd use it on the 10a setting as it's adjustable.

 

[RickBullotta]

You don't need a constant supply, a battery charger is more than sufficient. Most chargers these days will automatically turn back on when the voltage drops. I recently did 2hrs worth of updates to a 24 5.0 F150 and though the charger I had connected was a 15 amp, it was off most of the time. Don't run your headlights or HVAC blower while doing updates. While I've got a bit more reserve capacity than most, the dealer left my truck on and programming for over 2hrs without a charger connected. It's just not a big deal on F150s.

Both FDRS and forscan give you a voltage reading, you don't need to be concerned until things get down below 11 volts. Only once you start to read 10.9v should you be looking for another vehicle and jumper cables. I've only seen below 12v w/out a charger connected.

I turn wipers off, headlights to off, HVAC off, and Sync screen off for updates that require the truck to be not running. For most USB updates, it doesn't matter because the truck can be running.

 

[farmtruckman]

That on paper at least is more than capable of handling it. Can't speak for the brand itself, but it's more than enough power. I'd use it on the 10a setting as it's adjustable.

Thanks I have ordered this for now. If the step down transformer doesn’t work, then I will use this option. Appreciate your take on it.

 

[rugedraw]

You don't need a constant supply, a battery charger is more than sufficient. Most chargers these days will automatically turn back on when the voltage drops. I recently did 2hrs worth of updates to a 24 5.0 F150 and though the charger I had connected was a 15 amp, it was off most of the time. Don't run your headlights or HVAC blower while doing updates. While I've got a bit more reserve capacity than most, the dealer left my truck on and programming for over 2hrs without a charger connected. It's just not a big deal on F150s.

Both FDRS and forscan give you a voltage reading, you don't need to be concerned until things get down below 11 volts. Only once you start to read 10.9v should you be looking for another vehicle and jumper cables. I've only seen below 12v w/out a charger connected.

One of the things I wanted to try was to PMI the GWM to see if it loads up the old config that way. I have never PMI'd the GWM and not sure how long it takes. So, I was hesitant on trying anything without a proper charger jic.

I’m reluctant to offer this as a suggestion because I’ve never reconfigured the GWM using FORScan, but if you can communicate with the GWM, you might be able to change the country code for just that module. If that’s the primary configuration error leading to the inability to access modules on other CANs, that could be a step in the right direction. Check with @rugedraw to see if this is safe before attempting it.

At this point, I don't see how it can make anything worse. My concern is that running a GWM config is only going to put the same bad config on the GWM again regardless of what the country code is.. Of all the modules in his truck, the GWM is the only one that has synced itself up with the server (column on the right shows it reported itself today), which means whatever bad config is on the GWM is now part of his a/b data on the server.

Which is why I am hoping that a PMI and selecting yes will roll the GWM software/config back to what it was before we did anything and at least all the modules in the network will go back live.

 

[HammaMan]

I've PMI'd the GWM, it's quick.

 

[fordtruckman2003]

Is GWM really different between vehicles?
Seems with the community of backup copies there would be something close enough to get them working. ?

 

[HammaMan]

Is GWM really different between vehicles?
Seems with the community of backup copies there would be something close enough to get them working. ?

The bus changes on the TRON F150s is much different than previous years due to the new bus layout.
Without the variables listed there's no way to easily discern differences though you could pull asbuilt data for several vehicles and compare the raw data if you're curious.

 

[fordtruckman2003]

The bus changes on the TRON F150s is much different than previous years due to the new bus layout.
Without the variables listed there's no way to easily discern differences though you could pull asbuilt data for several vehicles and compare the raw data if you're curious.

I was just looking at my own out of curiosity. ?
Not much has changed overall since my update marathon April 2023. The most recent ECG labeled update changed a few things, and so did late last year. There are a lot more lines on the Motorcraft version than the Forscan version of asbuilt.

Hopefully doing the PMI will help this owner get the module sorted.

 

[rugedraw]

Is GWM really different between vehicles?
Seems with the community of backup copies there would be something close enough to get them working. ?

Aside from what Hamma said, he has a Raptor, so they have things the regular F150 doesn't and the config in the GWM is tailored to it. Not to mention, config changes with different software version of the GWM, so I can't just get any 2021 Raptor and assume the config will work on his.

 

[farmtruckman]

So I ran the GWM PMI and choose yes and no on 2 occasions, both completed successfully. But the modules in question are still offline.
CC: @rugedraw @JEB @Snakebitten @Snakedoctor @HammaMan @fordtruckman2003

 

[HammaMan]

If you've already begun changing country codes that could be your issue, or you may just need a new GWM. When you do a module scan it helps to have the truck running as sometimes some modules won't show up otherwise.

It might be wise to PMI any module with a country code and that should revert it all to US. Always select "NO" to if the original module is installed.

Using forscan to overwrite the software on the GWM should also be tried -- haven't tried to update the firmware on the GWM w/ forscan so unsure if it's possible. Rugedraw should be able to see your part numbers with PTS for locating a replacement GWM. What module got corrupted that started all of this?

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