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Old 08-26-2014, 07:04 AM   #2151
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Well, it seems that the electric steering profile was tweaked too, as it's not nearly as sensitive and "twitchy" on the highway in cross winds.
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Old 08-26-2014, 09:03 AM   #2152
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Well, it seems that the electric steering profile was tweaked too, as it's not nearly as sensitive and "twitchy" on the highway in cross winds.
Yup. It's kind of annoying, but I'll live.
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Old 08-26-2014, 09:08 AM   #2153
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Yup. It's kind of annoying, but I'll live.
But you don't have to live with it, just take it to a Ford dealer and have them do the ECM update. For me, the update minimized the 1st gear shudder, and made highway steering much more stable.
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Old 08-26-2014, 09:22 AM   #2154
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But you don't have to live with it, just take it to a Ford dealer and have them do the ECM update. For me, the update minimized the 1st gear shudder, and made highway steering much more stable.
Are you saying the 14-0131 TSB addresses highway steering wandering? I find that hard to believe - unless they updated something else while you were there? I've never heard of that being done.

I know the steering gear has had several revisions since its release (I'm assuming these were changes to the physical parts and not just software). Someone correct me if I'm wrong, but I was under the impression that there was a power steering control module (PSCM) as it communicates with the BCM and the Park Assist Module (PAM).

EDIT:
It looks like the PSCM can be flashed, though I've never heard of anyone doing it.
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DTC U0300: Internal Control Module Software Incompatibility
[. . . ] This DTC is usually set if the PSCM has recently been flashed and the flash was done incorrectly or was interrupted.[. . . ]
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Old 08-26-2014, 09:34 AM   #2155
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Originally Posted by PratoN View Post
Are you saying the 14-0131 TSB addresses highway steering wandering? I find that hard to believe - unless they updated something else while you were there? I've never heard of that being done.

I know the steering gear has had several revisions since its release (I'm assuming these were changes to the physical parts and not just software). Someone correct me if I'm wrong, but I was under the impression that there was a power steering control module (PSCM) as it communicates with the BCM and the Park Assist Module (PAM).

EDIT:
It looks like the PSCM can be flashed, though I've never heard of anyone doing it.
I haven't been on here long enough to know all the acronyms, but i can tell you that my local Ford dealer was happy to apply the latest ECM flash ( I do not know which TSB it fell under). They also said that either that process, or a separate but concurrent process applied a newer shift profile, essentially keeping the rpm's a little higher between shifts. Additionally, my understanding is that these are electrically controlled power steering systems, and as such, certain parameters are tunable, such as sensitivity. Previously, I noticed that my steering was hyper sensitive at 70+mph, especially in heavy cross or head winds. That sensitivity "seems" to be mitigated, although it's hard to say that I've encountered the exact same environmental conditions as I had previously.

As a side note, in my mind, there is a single ECM (electronic control module) the main brain, that controls all aspects of engine performance and tune, including parameters for peripheral equipment, such as electric steering motors. Is this not true? Are there actually multiple computers that would require separate updates? If so, that seems rather inefficient.
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Old 08-26-2014, 02:32 PM   #2156
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VisionPilot - it's a brave new world as far as the computing network goes in these cars.

The earlier Focus models made do with a single PCM (Powertrain Control Module) for engine & trans. with a GEM (General Electronics Module) for all other controlled functions like remote access & lighting.

The latest model (MkIII) instead of having "HAL" in charge of everything has a network of interrelated computer modules controlling the various functions.

ECM, TCM & BCM are the biggies, controlling engine, transmission & body. But then you go on to PSCM, optional PAM and on down the line to everything from instrument cluster to optional individual door control modules. (not including electronic entertainment & services)

I haven't heard of anyone trying to list all the individual computers in the car, it'd be a long list.

On the good side, communication with them for service is through one OBD access port, and one module failing won't take down all functions.

Bad side, loss of electric power can take down everything.

Good idea for a new game though, "name that module" until everything electronic is listed.

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