Terrain management upgrade?

[Geoff]

And here's a pdf of the file showing only the first column of data for each pid.

NOTE: Values for the Lariat FX4 and XL FX4 & Non-FX4 are supressed if they EQUAL the values for the non-FX4 Lariat.
As before, if the values differ, the values for each are shown.

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[t4thfavor]

I added the XL trucks to the Lariat worksheet and made a few changes along the way.

PIDs are sorted in numerical order (not as-built order). You can re-sort anyway you like tho.

LARIATS: Values for the FX4 vehicle are blank if they EQUAL the values for the non-FX4 vehicle.
If the values differ, the values for each are shown.

NA means that the pids were not available for that Lariat FX4 vehicle

XL's: All values are shown

-- means these pids are not used in this vehicle (they were not listed in the AsBuilt).

This is an excel file compatible with 97-04 programs so most everyone should be able to open it.

Keep in mind you can hide (and unhide) columns and rows and I found it useful to hide the 2nd and 3rd set of numbers for each vehicle. This makes it easier (for me) to spot differences....

This is a good spreadsheet!

I'd recommend that people find the line of their truck in FX4 trim (use the lariat FX4 info if you have a lariat XLT FX4 if you have an XLT, and XL FX4 if you have an XL)

Then write each piece to the ABS module (take a backup first). It might cause errors in the ABS module initially, but you can reflash it with the original backup if you have a major issue.


Again, I won't have access to the truck I want to do this to for at least a few more weeks, and mine is already an FX4.

 

[Geoff]

This is a good spreadsheet!

I'd recommend that people find the line of their truck in FX4 trim (use the lariat FX4 info if you have a lariat XLT FX4 if you have an XLT, and XL FX4 if you have an XL)

Then write each piece to the ABS module (take a backup first). It might cause errors in the ABS module initially, but you can reflash it with the original backup if you have a major issue.


Again, I won't have access to the truck I want to do this to for at least a few more weeks, and mine is already an FX4.

I won't be able to test until I buy a switch and I'm still waffling on that....
I think I'd be inclined to try modifying 760-02-01 as that stands out as a clear difference between FX and non-FX and for both Lariats and XL's.....change it then test.

There are some variations in the other pids so they may need to be changed but I'd change one at a time then test, etc. What I do not know is if these values represent any sort of 'calibration data". We don't want to change things that don't matter to turning TC on - the differences you found in 760-02-01 are more like a 'switch' rather than calibration data.

For example 760-03-01 is consistent between Lariats and between XL's but not between XL and Lariats. I doubt that needs changing. I'm really undecided on the other 760's except for 760-01-01 which is basically identical across 4 vehicles so that doesn't need changing.

 

[Michael Crowe]

I won't be able to test until I buy a switch and I'm still waffling on that....
I think I'd be inclined to try modifying 760-02-01 as that stands out as a clear difference between FX and non-FX and for both Lariats and XL's.....change it then test.

There are some variations in the other pids so they may need to be changed but I'd change one at a time then test, etc. What I do not know is if these values represent any sort of 'calibration data". We don't want to change things that don't matter to turning TC on - the differences you found in 760-02-01 are more like a 'switch' rather than calibration data.

For example 760-03-01 is consistent between Lariats and between XL's but not between XL and Lariats. I doubt that needs changing. I'm really undecided on the other 760's except for 760-01-01 which is basically identical across 4 vehicles so that doesn't need changing.

Did not work.

 

[Geoff]

Did not work.

drats.
Good data point tho.
Thanks for trying and reporting back!

 

[t4thfavor]

Did not work.

You changed them all?

 

[Geoff]

At this point I agree with t4thfavor and suggest the next try is to change all 760-xx-xx pids to the FX4 numbers and give it a shot. Back up and record your original values and if it's a no-go restore the original values and all should be to normal.

 

[Frenchy]

So I just got Forscan today and went and added the terrain management with the offroad gauges and bambi mode. I'm so glad to be on a forum like this to have the info.

 

[Michael Crowe]

You changed them all?

Yes

 

[Geoff]

You changed them all?

Yes

That's discouraging but not disastrous -- yet.
There is probably at least one other module that's needs a change.
The search continues.

 

[t4thfavor]

Rcm and ipc should be next.

 

[Geoff]

I'd still like to find a 2019 501a FX4 Lariat to examine as-built data. Please PM me if you have that vehicle....

 

[Geoff]

Rcm and ipc should be next.

And maybe body control (BCM) but there are also ECU differences.....

 

[Michael Crowe]

And maybe body control (BCM) but there are also ECU differences.....

I believe it has something to do with the cruise control. We need to activate low speed some how.

 

[t4thfavor]

I believe it has something to do with the cruise control. We need to activate low speed some how.

Start reading that cruise control thread and compare the fx4 entries for the same modules.

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