WARNING: This page is about a different car, the 2016 Toyota Highlander, 2015 Toyota Highlander, and 2014 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
ON MALFUNCTION:
Detection criteria
Threshold
Turbine speed - Output speed x Gear ratio at output speed 1, 000 rpm (Condition varies with output speed)