TRNW-2: FW6A-EL Mazda 6 speed units Pressure Switches

[pat schulte]

Make sure the unit does not have a whine. The center bearing loves to go
out and I have never been able to buy one, always a used case.

On Thu, Oct 2, 2025 at 7:33 AM Dan Hogan via trnw2 <trnw2 at trnw.net> wrote:

> Thanks Fred.  I remember and saw your post as there are very few on these
> units.
>
> This doesn't feel like a sticking linear like the old AW55-50.  Just like
> it doesn't know whether the shift completes or not.  Not a lot of
> information available about the shift logic for these.
>
> ---
>
>
> Dan Hogan
>
> Buster's Transmission Service
>
> https://busterstransmission.com
>
> 704.847.5321
> ------------------------------
> *From:* trnw2-bounces at trnw.net <trnw2-bounces at trnw.net> on behalf of Fred
> Whitaker via trnw2 <trnw2 at trnw.net>
> *Sent:* Thursday, October 2, 2025 6:48 AM
> *To:* Mathieu Langlais <translarcheveque at gmail.com>; Technical Discussion
> Forum <trnw2 at trnw.net>
> *Subject:* Re: TRNW-2: FW6A-EL Mazda 6 speed units Pressure Switches
>
>  I had one in this family several years ago that took out the sprag. It
> wasn't drivable when it came in. When I got it back together it worked
> great cold. But when it got hot it would neutral out at a stop and catch
> when you give it gas (which is what took out the sprag).  I figured it
> being linear solenoids it was like an AW55. But no solenoids were available
> without a free valve body. I got a valve body from buffalo engines,and it
> looked like it was NEW. Which fixed it.
>   It had other issues going on hot but worked picture perfect cold and
> acted just like an AW55 with sticky solenoids. I never saw that one again
> and have yet to see another one.  I guess it could have been pressure
> switches. I will never know because I replaced whole VB.
> ------------------------------
> *From:* trnw2-bounces at trnw.net <trnw2-bounces at trnw.net> on behalf of
> Mathieu Langlais via trnw2 <trnw2 at trnw.net>
> *Sent:* Wednesday, October 1, 2025 1:30 PM
> *To:* Dan Hogan <danhogan at busterstransmission.com>; Technical Discussion
> Forum <trnw2 at trnw.net>
> *Subject:* Re: TRNW-2: FW6A-EL Mazda 6 speed units Pressure Switches
>
> We replaced a few transmission for 3-5-R problem on some CX-5 . We
> installed low mile used.
>
>
> Mathieu Langlais
> Transmission L'Archeveque Inc.
> 450-471-7733
>
>
> On Wed, Oct 1, 2025 at 2:25 PM Dan Hogan via trnw2 <trnw2 at trnw.net> wrote:
>
> Fishing for some experience with these 6 speed units.
>
> I have a 2018 CX5 in the shop with a customer concern related to a bumpy
> 2-3 and 4-5 shift at times.  No codes are present.  We are going to do a
> pan inspection.
>
> Ive dug into the Fix database and see a similar issue posted by Dean down
> in NZ related to a TCM failure.  I suspect I may have a pressure switch
> issue as the shift concern on the 2-3 shows a double tap on the 35R
> pressure switch PID.  When the shift is smooth and normal, pressure switch
> closure is one event.
>
> Has anyone encountered the TSB described failure of the pressure switches
> on these units?  Always codes?  Shift quality directly affected?
>
> Thanks for any experience with these units.
>
> ---
>
>
> Dan Hogan
>
> Buster's Transmission Service
>
> https://busterstransmission.com
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__busterstransmission.com&d=DwMGaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=smOzNWPZu5-MBJg-0tkHhHoVW9xEBKdKWsMxBeFAJDZVJI6X79ZhQVJ_erT6I9aF&m=Ka5sE_c7DSxb8HRVMwKXQ5LkGsbuBraBxA80lkMs8sP-rlOph2zKOGds1Pba_PvR&s=DYt5uMxXWCSbPiTBl5lrXb7E8gAAmUokXvqjbx22pmw&e=>
>
> 704.847.5321
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-- 
Pat Schulte
AAMCO Transmissions
Temecula, Ca.
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