Ohhhh I love crazy technical discussions like thisSo, here is what you do. Ford makes availale the stock module configurations for every vehicle thru here:
https://www.motorcraftservice.com/AsBuilt
Next up...you need a VIN... yours and one for a Bronco with this fancy new steering rack. Turns out, you can find such VIN numbhers on cars.com. Here is what I used...
Wildtrack VIN 1FMEE5DP4NLB05301 not sure if this has the fancy new steering gear. I am guessing not.
Raptor which has this fancy steering rack. VIN 1FMEE5JR9NLA51127.
First Edition 2 door (what you have, right?) 1FMDE5FP0MLA20480
You can now donwload the files and compare. Realizing that Ford does not re-invent the wheel when programming items across platforms,you explore such things as Ranger and F150 sites to get info. It is known that the first 3 digits are thye module as follows:
poertrain control PCM 7E0 image processing IPMA 706 gateway module GWM 716 instrument control IPC 720 battery energy control BECM 723 steering column control SCCM 724 body control BCM 726 audio control ACIM 727 power steering control PSCM 730 parking aid PAM 736 restraint control RCM 737 voltage quality DCDC 746 radio transceiver RTM 751 transmission control TCU 754 anti lock ABS 760 cruise control CCM 764 occupant classification system OCSM 765 digital signal processing radio DSP 783 trailer TRM 791 all terrain control ATCM 792 front controls interface FCIM 7A7 heads up display HUD 7B2 side obstacle detection left SODL 7C4 side obstacle detection right SODR 7C6 accesory protocal interface APIM 7D0
In addtion, the F-150 guys broke down a lot of stuff here:
Some of the more common features will have the same parameters across platforms, where others will be spcific to the F-150 in that document. A lot of paramter descriptions in the 730 (PSCM) for the F-150 should be same as the Bronco.
So, what you are looking for in teh data from the Ford Service site is anything that starts with 730 that is different in your module vas a Raptor module (it has the rack you want). I have done this for you. You will see that a Wild track is missing 730-05-01 paramters vs the First Edition and Raptor. I do beleive this value is related to a parking distance sensor.
The only difference between a Raptor and a First Edition 2 door is the 023A at then end of paramter 730-03-01. What would I do? I would use forscan to take the original configuration out of your old PSCM and load it into your new rack. Then change the value that is different for the Raptor configuration
wildtrack raptor first edition 730-01-01 FF01 0100 023C 730-01-01 FF01 0100 023C 730-01-01 FF01 0100 023C 730-01-02 0002 0000 003C 730-01-02 0002 0000 003C 730-01-02 0002 0000 003C 730-01-03 0000 0000 003B 730-01-03 0000 0000 003B 730-01-03 0000 0000 003B 730-01-04 0000 0000 003C 730-01-04 0000 0000 003C 730-01-04 0000 0000 003C 730-01-05 0000 0000 3D 730-01-05 0000 0000 3D 730-01-05 0000 0000 3D 730-02-01 FFFF FF00 0037 730-02-01 FFFF FF00 0037 730-02-01 FFFF FF00 0037 730-02-02 FFFF 0000 0039 730-02-02 FFFF 0000 0039 730-02-02 FFFF 0000 0039 730-02-03 FF00 0000 003B 730-02-03 FF00 0000 003B 730-02-03 FF00 0000 003B 730-02-04 0000 0000 003D 730-02-04 0000 0000 003D 730-02-04 0000 0000 003D 730-02-05 0000 0000 3E 730-02-05 0000 0000 3E 730-02-05 0000 0000 3E 730-03-01 FF00 FFFF 0139 730-03-01 FF00 FFFF 023A 730-03-01 FF00 FFFF 0139 730-03-02 00FF 0000 003B 730-03-02 00FF 0000 003B 730-03-02 00FF 0000 003B 730-03-03 0000 0000 003D 730-03-03 0000 0000 003D 730-03-03 0000 0000 003D 730-03-04 0000 0000 003E 730-03-04 0000 0000 003E 730-03-04 0000 0000 003E 730-03-05 0000 0000 3F 730-03-05 0000 0000 3F 730-03-05 0000 0000 3F 730-04-01 FFFF FFFF FF37 730-04-01 FFFF FFFF FF37 730-04-01 FFFF FFFF FF37 730-04-02 FFFF FFFF FF38 730-04-02 FFFF FFFF FF38 730-04-02 FFFF FFFF FF38 730-04-03 FFFF FFFF FF39 730-04-03 FFFF FFFF FF39 730-04-03 FFFF FFFF FF39 730-04-04 FFFF FFFF FF3A 730-04-04 FFFF FFFF FF3A 730-04-04 FFFF FFFF FF3A 730-04-05 FFFF FFFF FF3B 730-04-05 FFFF FFFF FF3B 730-04-05 FFFF FFFF FF3B 730-04-06 FFFF FFFF FF3C 730-04-06 FFFF FFFF FF3C 730-04-06 FFFF FFFF FF3C 730-04-07 FFFF FFFF FF3D 730-04-07 FFFF FFFF FF3D 730-04-07 FFFF FFFF FF3D 730-04-08 FFFF FFFF FF3E 730-04-08 FFFF FFFF FF3E 730-04-08 FFFF FFFF FF3E 730-04-09 FFFF FFFF FF3F 730-04-09 FFFF FFFF FF3F 730-04-09 FFFF FFFF FF3F 730-04-10 FFFF FFFF FF46 730-04-10 FFFF FFFF FF46 730-04-10 FFFF FFFF FF46 730-04-11 FFFF FFFF FF47 730-04-11 FFFF FFFF FF47 730-04-11 FFFF FFFF FF47 730-04-12 FFFF FFFF FF48 730-04-12 FFFF FFFF FF48 730-04-12 FFFF FFFF FF48 730-04-13 FFFF FFFF 4A 730-04-13 FFFF FFFF 4A 730-04-13 FFFF FFFF 4A 730-05-01 FFFF 3B 730-05-01 FFFF 3B 730-06-01 0000 0000 003E 730-06-01 0000 0000 003E 730-06-01 0000 0000 003E 730-06-02 0000 0000 003F 730-06-02 0000 0000 003F 730-06-02 0000 0000 003F 730-06-03 0000 0000 0040 730-06-03 0000 0000 0040 730-06-03 0000 0000 0040 730-06-04 0000 0000 0041 730-06-04 0000 0000 0041 730-06-04 0000 0000 0041 730-06-05 0000 0000 42 730-06-05 0000 0000 42 730-06-05 0000 0000 42
Also, realizing that the Ranger uses the same rack control methodology, that shop manual (which I have) can be used to read how the system works. In short, over CAN, the rack gets vehicle speed info. It then uses info from the torque sensor built into the ste steering colum input to the rack along with the speed data to determine how much assist for the rack motor to give. If you have Lane Keeping System (LKS)and Pull Drift Compensation (PDC), the rack can "move itself". The angle sensor is just that...used to determine how far you have turned the wheel for such things as the lines on the backup camera and to determine if the vehicle is going straight (for the PDC system) etc. As far as "calibrating" the rack, there is NOTHING in the shop manual about that. It just tells the technician to go to the ford service website, enter the vehicle vin, download the file for the module, then uplaod it into the new rack....nothing else needed. Becasue of the links above, you now have a method to pull the paramters you need to put in the rack, just like what a Ford technician would do.
For others watching at home....the racks that were failing where not "stripping the gears" Look at pics of failed racks....the casting where the lash adjuster resides is breaking and popping off. Essentially, during high force conditions, the rack is pressing against the lash adjuster and popping it out of the housing. Once the lash adjuster breaks out, the rack can now flop around inside the housing and loose contact with the pinion gear which would lead one to beleive the gears are "stripped"...which they are not. BroncBuster installed a bushing to relieve load from the lash adjuster, but IMHO, he defeated the function of the lash adjuster. If that bushing is a tight fit, it could effect the lash adjustnment on the rack causing other issues over time. From the photos of the new rack, it is very obvious that the area around the lash adjuster has been re-inforced significantly.
Good luck
bravo
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