Today we will be performing a complete electronic rack and pinion replacement on this 2014 Ford F-150.
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The replacement process is very similar to that of a conventional hydraulic rack and pinion, however, some additional steps are required.
This electronic rack requires us to perform what is called a PMI which is also known as a programmable module installation, which means that we are going to extract the configuration information from the original power steering control module from the original rack and pinion before removing it, then upload this data to the replacement rack and pinion after installation is complete.
PMI is a process where we use a J2534 flash tool like this to extract the data from the original Rack and Pinion module and transfer it to the replacement Rack and Pinion module. Sometimes a PMI cannot be performed because the original module is unable to communicate due to its damage or other reasons as well. In this case, using “as-built” data will get you started.
A note before continuing with the installation. Many vehicles now use equipment called TTY or Torque to give way. The torque for releasing the bolts cannot and should not be reused, they are intended to be tightened only once. The 2 rack and pinion mounting bolts, outer link nuts and steering shaft bolt to the rack input shaft should be discarded and replaced with new ones.
Before removing the electronic power steering box, we want to connect our module programming tool J2534 and the laptop to the Data Link connector under the dashboard. Using Ford’s IDS, we want to enter PMI and download the module configuration information from the power steering control module
Next, it is important to remove the negative battery cable, otherwise it may damage the internal power relay of the replacement unit.
Position the vehicle on a lift, then using an anti-theft device as such, center and lock the steering wheel in place. Do not let the flywheel spin, or damage to the clock spring may occur, if there is evidence that the flywheel has turned you will need to remove and re-center the clock spring.
Now let’s remove the front wheels and tires and then remove the skid plate, if applicable.
Loosen the outer link end jam nuts, then remove the nuts securing the links to the knuckle and discard them.
You can now unscrew each outer tie rod and locknut so that they can be replaced on the replacement unit.
Remove and discard the steering column shaft-to-steering box bolt and disconnect the steering shaft from the rack and pinion
Disconnect the two electrical connectors from the steering box, disconnect the four wire harness clips, set the harness aside.
Remove and discard the two bolts from the steering box to the crossmember, now the rack and pinion can be removed.
Position the replacement rack and pinion unit in place and using new mounting bolts, tighten them to 325 foot-pounds,
Position the steering shaft on the rack and pinion and secure it with a new bolt that you will tighten to 22 ft lb.
Screw each outer tie-rod and outer tie-rod jam nut onto the replacement rack, keeping in mind that final adjustment will be made when aligning the front wheels after installation.
Replace the skid plate and bolts (if applicable)
Install the front wheels and tires.
You can now lower the vehicle and remove the steering wheel lock.
Using your J-2534 device, you must now complete the PMI (Programmable Module Installation) to get the original unit configuration information downloaded into the replacement unit.
We will return to the IDS and download the information stored in the power steering control module. After confirming that the download was successful, we can check and verify that no DTCs exist and disconnect the laptop from the DLC.
Now that we’ve uploaded our setup to our rack and our tires are back on the vehicle, we can proceed with the front alignment to make sure the toe is centered on that vehicle.
Now that we’ve completed the alignment, there are just a few more things to do. Go forward first and take your steering wheel and turn it lock to lock to check the correct operation of the rack and pinion, making sure that there are no abnormal noises, and that no indicator lights are visible. ‘lights up on the dashboard.
Then let’s go for a test drive, making sure we’re going over 45 miles an hour and everything is going as it should.
And with that, the procedure for installing and programming the electronic power steering rack and pinion is complete, and this F-150 is ready to go.
This video is sponsored by Cardone.