Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB

- Issues | Warranty | Recalls / TSB (https://www.ft86club.com/forums/forumdisplay.php?f=72)

- - AT frs rpm issue (https://www.ft86club.com/forums/showthread.php?t=99426)

Quote:

Originally Posted by phrosty (Post 2495589)

Highly doubt the 15s have a different TCM than us.

Hmm I never had an issue so I never looked into it haha! I thought they had issues though on the 15's?

Quote:

Originally Posted by go_a_way1 (Post 2495543)

I thought that was only for the 15s?

Yes, it's only '15 AT.
S-SB-0021-15

Quote:

Originally Posted by Sigh-on-Rice (Post 2495610)

Yes, it's only '15 AT.
S-SB-0021-15

Sweet I was right haha! Thank!!

Quote:

Originally Posted by go_a_way1 (Post 2495635)

Sweet I was right haha! Thank!!

Quote:

Originally Posted by go_a_way1 (Post 2495596)

Hmm I never had an issue so I never looked into it haha! I thought they had issues though on the 15's?

Quote:

Originally Posted by phrosty (Post 2495589)

Highly doubt the 15s have a different TCM than us.

Quote:

Originally Posted by go_a_way1 (Post 2495543)

I thought that was only for the 15s?

Quote:

Originally Posted by phrosty (Post 2495538)

Now that there's a TCM flash TSB, I wonder if any tuners can find out how to do that.

The TCM is exactly the same as the other years of AT FR-S however the new software referred to in the TSB is the latest logic for the TCM, think of it as a simple software update that corrects some screw ups. I was wondering as well if tuners can flash to the TCM. Paging @steve99

Quote:

Originally Posted by FRSBRZGT86FAN (Post 2497527)

I am not aware of any tuning systems that flash the Transmission Control Module, all just flash the Engine control unit AFAIK.

Ecutek appears to be able to adjust the traction control parameters somehow, it may be just adjusting whats sent from ECU to the VSC or TCM modules.

Maybe talk to the moteast or deliceous guys

Their was some changes to the ECU firmware after late 2014 ,it appears to be due to changes to dash firmware/hardware so its possible their were also corresponding changes to TCM firmware.

This may mean that even though the TCM module may be the same hardware as in earlier cars if you managed to flash later firmware to it it may no longer communicate/interact correctly with the other control modules in the car like the Stability control/DASH/ECU or some other control modules of the earlier car

This is likely why that TSB is only for 2015 cars