2001 Sequioa Limited VSC issue

I have a 2001 limited Sequioa and I am having a unique issue with the vsc system. When I start out the deceleration module activates until the the speed gets past 7 miles per hour.

Here is what I have done to it so far to fix it. Any ideas or help would greatly be appreciated.

1. Tested all the wheel speed sensor and the reflector rings all good no debris
2. Replaced the drivers side front speed sensor it was causing the breaks to randomly engage
3. Replace yaw sensor it kept throwing codes on ODBC Computer.
4. Cleaned the throttle body (thought it might be causing the hesitation like a flat spot in carbs used to but not joy here)
5. Plugged in snap-on ethos test computer to discover there are no codes being given just have to wait 10 seconds for it to cycle and then the throttle works again. ( hard to get out of the way if something goes wrong)
6. Cleaned battery and alternator connection and replace alternator. Tested weak on the recharge value. 12.9 volts. (Thats why the connector got cleaned as well. )
7. Make sure break fluid was full 1 mm above the line
8. Put brand new tires on it
9. Retested it with no codes being thrown.
10. Took to dealership they want $$$$$$$$$ to “try” to diagnose the problem.
11. Spent almost 40 hours on the internet searching for answers but have not gotten this solved yet
12. Some suggested the master cylinder is going bad but it passed the test ?

Any feed back would greatly appreciated I am into month 2 of dealing with this thank you in advance.

Curlyc1

 

Did you do a zero point calibration since changing/repairing these items? Not exactly sure how it's done on sequoias but there is a way to reset/recalibrate the yaw sensors that tie to the VSC stuff...

 

I did not do a zero point calibration thank you for the suggestion! I will have to looked that I up and give it try thanks again for the suggestion

Have a great holiday

 

You too! That "should" make everything better! Good luck and have a wonderful Christmas break!