How does dual switch brake pedal work ?

[Mastherr]

Folks, I was finally able to do the testing. I disconnected the TOSS and went for a drive…. Terrible performance Than I reconnected the TOSS and disconnected the TISS, went for a drive…..

Stopped and performed the transmission code testing…. And NOTHING!!!! No codes stored…. Again 1,2. 1,2. 1.2. 1.2 ………

I hate to get to this conclusion, but I think the problem is with the TCU, correct?

Your input is much appreciated.

 

[Mogman]

Folks, I was finally able to do the testing. I disconnected the TOSS and went for a drive…. Terrible performance Than I reconnected the TOSS and disconnected the TISS, went for a drive…..

Stopped and performed the transmission code testing…. And NOTHING!!!! No codes stored…. Again 1,2. 1,2. 1.2. 1.2 ………

I hate to get to this conclusion, but I think the problem is with the TCU, correct?

Your input is much appreciated.

I do not think the TCM stores codes, so the TOSS may have cleared when it was reconnected, the supplement should describe what clears the codes (besides disconnecting the batteries)
It does seem to point to a TCM issue.
IIRC some codes would clear when the vehicle was shut off and re-started if the condition was no longer present.